Update @actions/core to 1.10.0 (#587)

feat: add volta as node-version-file

.gitattributes

@@ -0,0 +1 @@
+.licenses/** -diff linguist-generated=true

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,38 @@
+---
+name: Bug report
+about: Create a bug report
+title: ''
+labels: bug, needs triage
+assignees: ''
+
+---
+
+<!--- Please direct any generic questions related to actions to our support community forum at https://github.community/c/code-to-cloud/github-actions/41 --->
+<!--- Before opening up a new bug report, please make sure to check for similar existing issues -->
+
+**Description:**
+A clear and concise description of what the bug is.
+
+**Action version:**
+Specify the action version
+
+**Platform:**
+- [ ] Ubuntu
+- [ ] macOS
+- [ ] Windows
+
+**Runner type:**
+- [ ] Hosted
+- [ ] Self-hosted
+
+**Tools version:**
+<!--- Please specify versions of node and package manager (npm, yarn, pnpm and etc)-->
+
+**Repro steps:**  
+A description with steps to reproduce the issue. If you have a public example or repo to share, please provide the link.
+
+**Expected behavior:**
+A description of what you expected to happen.
+
+**Actual behavior:**
+A description of what is actually happening.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,18 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: feature request, needs triage
+assignees: ''
+---
+<!--- Please direct any generic questions related to actions to our support community forum at https://github.community/c/code-to-cloud/github-actions/41 --->
+<!--- Before opening up a new feature request, please make sure to check for similar existing issues and pull requests -->
+
+**Description:**
+Describe your proposal.
+
+**Justification:**
+Justification or a use case for your proposal.
+
+**Are you willing to submit a PR?**
+<!--- We accept contributions! -->

.github/pull_request_template.md

@@ -0,0 +1,9 @@
+**Description:**
+Describe your changes.
+
+**Related issue:**
+Add link to the related issue.
+
+**Check list:**
+- [ ] Mark if documentation changes are required.
+- [ ] Mark if tests were added or updated to cover the changes.

.github/tsc.json

@@ -4,14 +4,15 @@
             "owner": "tsc",
             "pattern": [
                 {
-                    "regexp": "^(?:\\s+\\d+\\>)?([^\\s].*)\\((\\d+|\\d+,\\d+|\\d+,\\d+,\\d+,\\d+)\\)\\s*:\\s+(error|warning|info)\\s+(\\w{1,2}\\d+)\\s*:\\s*(.*)$",
+                    "regexp": "^([^\\s].*)[\\(:](\\d+)[,:](\\d+)(?:\\):\\s+|\\s+-\\s+)(error|warning|info)\\s+TS(\\d+)\\s*:\\s*(.*)$",
                     "file": 1,
-                    "location": 2,
-                    "severity": 3,
-                    "code": 4,
-                    "message": 5
+                    "line": 2,
+                    "column": 3,
+                    "severity": 4,
+                    "code": 5,
+                    "message": 6
                 }
             ]
         }
     ]
-}
+}

.github/workflows/build-test.yml

@@ -0,0 +1,30 @@
+name: build-test
+
+on:
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  push:
+    branches:
+      - main
+      - releases/*
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Node 16.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm run format-check
+      - run: npm test

.github/workflows/check-dist.yml

@@ -0,0 +1,52 @@
+# `dist/index.js` is a special file in Actions.
+# When you reference an action with `uses:` in a workflow,
+# `index.js` is the code that will run.
+# For our project, we generate this file through a build process from other source files.
+# We need to make sure the checked-in `index.js` actually matches what we expect it to be.
+name: Check dist/
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup Node 16.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 16.x
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Rebuild the dist/ directory
+        run: npm run build
+
+      - name: Compare the expected and actual dist/ directories
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build.  See status below:"
+            git diff
+            exit 1
+          fi
+        id: diff
+
+      # If index.js was different than expected, upload the expected version as an artifact
+      - uses: actions/upload-artifact@v3
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        with:
+          name: dist
+          path: dist/

.github/workflows/e2e-cache.yml

@@ -0,0 +1,136 @@
+name: e2e-cache
+
+on:
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  push:
+    branches:
+      - main
+      - releases/*
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  node-npm-depencies-caching:
+    name: Test npm (Node ${{ matrix.node-version}}, ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [12, 14, 16]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Clean global cache
+        run: npm cache clean --force
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm install
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  node-pnpm-depencies-caching:
+    name: Test pnpm (Node ${{ matrix.node-version}}, ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [12, 14, 16]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+        with:
+          version: 6.10.0
+      - name: Generate pnpm file
+        run: pnpm install
+      - name: Remove dependencies
+        shell: pwsh
+        run: Remove-Item node_modules -Force -Recurse
+      - name: Clean global cache
+        run: rm -rf ~/.pnpm-store
+        shell: bash
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'pnpm'
+      - name: Install dependencies
+        run: pnpm install
+      - name: Verify node and pnpm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  node-yarn1-depencies-caching:
+    name: Test yarn 1 (Node ${{ matrix.node-version}}, ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [12, 14, 16]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Yarn version
+        run: yarn --version
+      - name: Generate yarn file
+        run: yarn install
+      - name: Remove dependencies
+        shell: pwsh
+        run: Remove-Item node_modules -Force -Recurse
+      - name: Clean global cache
+        run: yarn cache clean
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'yarn'
+      - name: Install dependencies
+        run: yarn install
+      - name: Verify node and yarn
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  node-yarn2-depencies-caching:
+    name: Test yarn 2 (Node ${{ matrix.node-version}}, ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    env:
+      YARN_ENABLE_IMMUTABLE_INSTALLS: false
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [12, 14, 16]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Update yarn
+        run: yarn set version berry
+      - name: Yarn version
+        run: yarn --version
+      - name: Generate simple .yarnrc.yml
+        run: |
+          echo "nodeLinker: node-modules" >> .yarnrc.yml
+      - name: Generate yarn file
+        run: yarn install
+      - name: Remove dependencies
+        shell: pwsh
+        run: Remove-Item node_modules -Force -Recurse
+      - name: Clean global cache
+        run: yarn cache clean --all
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'yarn'
+      - name: Install dependencies
+        run: yarn install
+      - name: Verify node and yarn
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash

.github/workflows/licensed.yml

@@ -0,0 +1,24 @@
+name: Licensed
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Check licenses
+    steps:
+      - uses: actions/checkout@v3
+      - run: npm ci
+      - name: Install licensed
+        run: |
+          cd $RUNNER_TEMP
+          curl -Lfs -o licensed.tar.gz https://github.com/github/licensed/releases/download/3.4.4/licensed-3.4.4-linux-x64.tar.gz
+          sudo tar -xzf licensed.tar.gz
+          sudo mv licensed /usr/local/bin/licensed
+      - run: licensed status

.github/workflows/proxy.yml

@@ -0,0 +1,52 @@
+name: proxy
+
+on:
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  push:
+    branches:
+      - main
+      - releases/*
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  test-proxy:
+    runs-on: ubuntu-latest
+    container:
+      image: ubuntu:latest
+      options: --dns 127.0.0.1
+    services:
+      squid-proxy:
+        image: datadog/squid:latest
+        ports:
+          - 3128:3128
+    env:
+      https_proxy: http://squid-proxy:3128
+    steps:
+      - uses: actions/checkout@v3
+      - name: Clear tool cache
+        run: rm -rf $RUNNER_TOOL_CACHE/*
+      - name: Setup node 14
+        uses: ./
+        with:
+          node-version: 14.x
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh 14
+
+  test-bypass-proxy:
+    runs-on: ubuntu-latest
+    env:
+      https_proxy: http://no-such-proxy:3128
+      no_proxy: api.github.com,github.com,nodejs.org,registry.npmjs.org,*.s3.amazonaws.com,s3.amazonaws.com
+    steps:
+      - uses: actions/checkout@v3
+      - name: Clear tool cache
+        run: rm -rf $RUNNER_TOOL_CACHE/*
+      - name: Setup node 11
+        uses: ./
+        with:
+          node-version: 11
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh 11

.github/workflows/release-new-action-version.yml

@@ -0,0 +1,27 @@
+name: Release new action version
+on:
+  release:
+    types: [released]
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+env:
+  TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
+permissions:
+  contents: write
+
+jobs:
+  update_tag:
+    name: Update the major tag to include the ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }} changes
+    environment:
+      name: releaseNewActionVersion
+    runs-on: ubuntu-latest
+    steps:
+    - name: Update the ${{ env.TAG_NAME }} tag
+      uses: actions/publish-action@v0.1.0
+      with:
+        source-tag: ${{ env.TAG_NAME }}
+        slack-webhook: ${{ secrets.SLACK_WEBHOOK }}

.github/workflows/versions.yml

@@ -0,0 +1,199 @@
+name: versions
+
+on:
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  push:
+    branches:
+      - main
+      - releases/*
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  local-cache:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10, 12, 14]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  lts-syntax:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [lts/dubnium, lts/erbium, lts/fermium, lts/*, lts/-1]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          check-latest: true
+      - if: runner.os != 'Windows'
+        name: Verify node and npm
+        run: |
+          . "$NVM_DIR/nvm.sh"
+          [[ $(nvm version-remote "${{ matrix.node-version }}") =~ ^v([^.]+) ]]
+          __tests__/verify-node.sh "${BASH_REMATCH[1]}"
+        shell: bash
+
+  manifest:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10.15, 12.16.0, 14.2.0, 16.3.0]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  check-latest:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10, 12, 14]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Node and check latest
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+          check-latest: true
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  version-file:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version-file: [.nvmrc, .tool-versions, package.json]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Remove volta from package.json
+        shell: bash
+        run: cat <<< "$(jq 'del(.volta)' ./__tests__/data/package.json)" > ./__tests__/data/package.json
+      - name: Setup node from node version file
+        uses: ./
+        with:
+          node-version-file: '__tests__/data/${{ matrix.node-version-file }}'
+      - name: Verify node
+        run: __tests__/verify-node.sh 14
+
+  version-file-volta:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup node from node version file
+        uses: ./
+        with:
+          node-version-file: '__tests__/data/package.json'
+      - name: Verify node
+        run: __tests__/verify-node.sh 16
+
+  node-dist:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [11, 13]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Node from dist
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Verify node and npm
+        run: __tests__/verify-node.sh "${{ matrix.node-version }}"
+        shell: bash
+
+  old-versions:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    steps:
+      - uses: actions/checkout@v3
+      # test old versions which didn't have npm and layout different
+      - name: Setup node 0.12.18 from dist
+        uses: ./
+        with:
+          node-version: 0.12.18
+      - name: Verify node
+        run: __tests__/verify-node.sh 0.12.18 SKIP_NPM
+        shell: bash
+
+  arch:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup node 14 x86 from dist
+        uses: ./
+        with:
+          node-version: '14'
+          architecture: 'x86'
+      - name: Verify node
+        run: __tests__/verify-arch.sh "ia32"
+        shell: bash
+
+  node-latest-aliases:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [current, latest, node]
+    steps:
+      - name: Get node version
+        run: |
+          latestNodeVersion=$(curl https://nodejs.org/dist/index.json | jq -r '. [0].version')
+          echo "::set-output name=LATEST_NODE_VERSION::$latestNodeVersion"
+        id: version
+        shell: bash
+      - uses: actions/checkout@v3
+      - name: Setup Node
+        uses: ./
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Retrieve version after install
+        run: |
+          updatedVersion=$(echo $(node --version))
+          echo "::set-output name=NODE_VERSION_UPDATED::$updatedVersion"
+        id: updatedVersion
+        shell: bash
+      - name: Compare versions
+        if: ${{ steps.version.outputs.LATEST_NODE_VERSION != steps.updatedVersion.outputs.NODE_VERSION_UPDATED}}
+        run: |
+          echo "Latest node version failed to download."
+          exit 1

.github/workflows/workflow.yml

@@ -1,94 +0,0 @@
-name: Main workflow
-
-on:
-  pull_request:
-  push:
-    branches:
-      - master
-      - releases/*
-
-jobs:
-  build:
-    runs-on: ${{ matrix.operating-system }}
-    strategy:
-      matrix:
-        operating-system: [ubuntu-latest, windows-latest]
-    steps:
-      - uses: actions/checkout@v2
-      - name: Setup node 12
-        uses: actions/setup-node@v1
-        with:
-          node-version: 12.x
-      - run: npm ci
-      - run: npm run build
-      - run: npm run format-check
-      - run: npm test
-      - name: Verify no unstaged changes
-        if: runner.os != 'windows'
-        run: __tests__/verify-no-unstaged-changes.sh
-
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Clear tool cache
-        run: rm -rf $RUNNER_TOOL_CACHE/*
-      - name: Setup node 10
-        uses: ./
-        with:
-          node-version: 10.x
-      - name: Verify node and npm
-        run: __tests__/verify-node.sh 10
-
-  test-fallback:
-    runs-on: windows-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Clear tool cache
-        run: mv "${{ runner.tool_cache }}" "${{ runner.tool_cache }}.old"
-      - name: Setup node 0.12.18 # For non LTS versions of Node, the zip is not always available
-        uses: ./                 # and falls back to downloading node.exe and node.lib
-        with:
-          node-version: 0.12.18
-      - name: Verify node
-        shell: bash
-        run: __tests__/verify-node.sh 0.12.18 SKIP_NPM
-
-  test-proxy:
-    runs-on: ubuntu-latest
-    container:
-      image: ubuntu:latest
-      options: --dns 127.0.0.1
-    services:
-      squid-proxy:
-        image: datadog/squid:latest
-        ports:
-          - 3128:3128
-    env:
-      https_proxy: http://squid-proxy:3128
-    steps:
-      - uses: actions/checkout@v2
-      - name: Clear tool cache
-        run: rm -rf $RUNNER_TOOL_CACHE/*
-      - name: Setup node 10
-        uses: ./
-        with:
-          node-version: 10.x
-      - name: Verify node and npm
-        run: __tests__/verify-node.sh 10
-
-  test-bypass-proxy:
-    runs-on: ubuntu-latest
-    env:
-      https_proxy: http://no-such-proxy:3128
-      no_proxy: github.com,nodejs.org,registry.npmjs.org
-    steps:
-      - uses: actions/checkout@v2
-      - name: Clear tool cache
-        run: rm -rf $RUNNER_TOOL_CACHE/*
-      - name: Setup node 10
-        uses: ./
-        with:
-          node-version: 10.x
-      - name: Verify node and npm
-        run: __tests__/verify-node.sh 10

.gitignore

@@ -2,6 +2,9 @@ node_modules/
 lib/
 __tests__/runner/*
 
+validate/temp
+validate/node
+
 # Rest of the file pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
 # Logs
 logs

.licensed.yml

@@ -0,0 +1,15 @@
+sources:
+  npm: true
+
+allowed:
+  - apache-2.0
+  - 0bsd
+  - bsd-2-clause
+  - bsd-3-clause
+  - isc
+  - mit
+  - cc0-1.0
+  - unlicense
+
+reviewed:
+  npm:

.vscode/launch.json

@@ -0,0 +1,21 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug Jest Tests on Nix",
+            "type": "node",
+            "request": "launch",
+            "runtimeArgs": [
+              "--inspect-brk",
+              "${workspaceRoot}/node_modules/.bin/jest",
+              "--runInBand"
+            ],
+            "console": "integratedTerminal",
+            "internalConsoleOptions": "neverOpen",
+            "port": 9229
+          }        
+    ]
+}

CODEOWNERS

@@ -0,0 +1 @@
+* @actions/actions-service

CODE_OF_CONDUCT.md

@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at opensource@github.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

README.md

@@ -1,110 +1,135 @@
 # setup-node
 
-<p align="left">
-  <a href="https://github.com/actions/setup-node"><img alt="GitHub Actions status" src="https://github.com/actions/setup-node/workflows/Main%20workflow/badge.svg"></a>
-</p>
+[![build-test](https://github.com/actions/setup-node/actions/workflows/build-test.yml/badge.svg)](https://github.com/actions/setup-node/actions/workflows/build-test.yml)
+[![versions](https://github.com/actions/setup-node/actions/workflows/versions.yml/badge.svg)](https://github.com/actions/setup-node/actions/workflows/versions.yml)
+[![proxy](https://github.com/actions/setup-node/actions/workflows/proxy.yml/badge.svg)](https://github.com/actions/setup-node/actions/workflows/proxy.yml)
 
-This action sets by node environment for use in actions by:
+This action provides the following functionality for GitHub Actions users:
 
-- optionally downloading and caching a version of node - npm by version spec and add to PATH
-- registering problem matchers for error output 
+- Optionally downloading and caching distribution of the requested Node.js version, and adding it to the PATH
+- Optionally caching npm/yarn/pnpm dependencies
+- Registering problem matchers for error output
+- Configuring authentication for GPR or npm
 
-# Usage
+## Usage
 
 See [action.yml](action.yml)
 
-Basic:
+**Basic:**
+
 ```yaml
 steps:
-- uses: actions/checkout@v2
-- uses: actions/setup-node@v1
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
   with:
-    node-version: '10.x'
-- run: npm install
+    node-version: 16
+- run: npm ci
 - run: npm test
 ```
 
-Matrix Testing:
+The `node-version` input is optional. If not supplied, the node version from PATH will be used. However, it is recommended to always specify Node.js version and don't rely on the system one.
+
+The action will first check the local cache for a semver match. If unable to find a specific version in the cache, the action will attempt to download a version of Node.js. It will pull LTS versions from [node-versions releases](https://github.com/actions/node-versions/releases) and on miss or failure will fall back to the previous behavior of downloading directly from [node dist](https://nodejs.org/dist/).
+
+For information regarding locally cached versions of Node.js on GitHub hosted runners, check out [GitHub Actions Runner Images](https://github.com/actions/runner-images).
+
+### Supported version syntax
+
+The `node-version` input supports the Semantic Versioning Specification, for more detailed examples please refer to the [documentation](https://github.com/npm/node-semver).
+
+Examples:
+
+ - Major versions: `14`, `16`, `18`
+ - More specific versions: `10.15`, `16.15.1` , `18.4.0`
+ - NVM LTS syntax: `lts/erbium`, `lts/fermium`, `lts/*`, `lts/-n`
+ - Latest release: `*` or `latest`/`current`/`node`
+
+**Note:** Like the other values, `*` will get the latest [locally-cached Node.js version](https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md#nodejs), or the latest version from [actions/node-versions](https://github.com/actions/node-versions/blob/main/versions-manifest.json), depending on the [`check-latest`](docs/advanced-usage.md#check-latest-version) input.
+
+`current`/`latest`/`node` always resolve to the latest [dist version](https://nodejs.org/dist/index.json).
+That version is then downloaded from actions/node-versions if possible, or directly from Node.js if not.
+Since it will not be cached always, there is possibility of hitting rate limit when downloading from dist
+
+### Checking in lockfiles
+
+It's **always** recommended to commit the lockfile of your package manager for security and performance reasons. For more information consult the "Working with lockfiles" section of the [Advanced usage](docs/advanced-usage.md#working-with-lockfiles) guide.
+
+## Caching global packages data
+
+The action has a built-in functionality for caching and restoring dependencies. It uses [actions/cache](https://github.com/actions/cache) under the hood for caching global packages data but requires less configuration settings. Supported package managers are `npm`, `yarn`, `pnpm` (v6.10+). The `cache` input is optional, and caching is turned off by default.
+
+The action defaults to search for the dependency file (`package-lock.json`, `npm-shrinkwrap.json` or `yarn.lock`) in the repository root, and uses its hash as a part of the cache key. Use `cache-dependency-path` for cases when multiple dependency files are used, or they are located in different subdirectories.
+
+**Note:** The action does not cache `node_modules`
+
+See the examples of using cache for `yarn`/`pnpm` and `cache-dependency-path` input in the [Advanced usage](docs/advanced-usage.md#caching-packages-data) guide.
+
+**Caching npm dependencies:**
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: 16
+    cache: 'npm'
+- run: npm ci
+- run: npm test
+```
+
+**Caching npm dependencies in monorepos:**
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: 16
+    cache: 'npm'
+    cache-dependency-path: subdir/package-lock.json
+- run: npm ci
+- run: npm test
+```
+
+## Matrix Testing
+
 ```yaml
 jobs:
   build:
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [ '10', '8' ]
+        node: [ 14, 16, 18 ]
     name: Node ${{ matrix.node }} sample
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Setup node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
-      - run: npm install
+      - run: npm ci
       - run: npm test
 ```
 
-Publish to npmjs and GPR with npm:
-```yaml
-steps:
-- uses: actions/checkout@v2
-- uses: actions/setup-node@v1
-  with:
-    node-version: '10.x'
-    registry-url: 'https://registry.npmjs.org'
-- run: npm install
-- run: npm publish
-  env:
-    NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-- uses: actions/setup-node@v1
-  with:
-    registry-url: 'https://npm.pkg.github.com'
-- run: npm publish
-  env:
-    NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-```
+## Advanced usage
 
-Publish to npmjs and GPR with yarn:
-```yaml
-steps:
-- uses: actions/checkout@v2
-- uses: actions/setup-node@v1
-  with:
-    node-version: '10.x'
-    registry-url: <registry url>
-- run: yarn install
-- run: yarn publish
-  env:
-    NODE_AUTH_TOKEN: ${{ secrets.YARN_TOKEN }}
-- uses: actions/setup-node@v1
-  with:
-    registry-url: 'https://npm.pkg.github.com'
-- run: yarn publish
-  env:
-    NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-```
+1. [Check latest version](docs/advanced-usage.md#check-latest-version)
+2. [Using a node version file](docs/advanced-usage.md#node-version-file)
+3. [Using different architectures](docs/advanced-usage.md#architecture)
+4. [Caching packages data](docs/advanced-usage.md#caching-packages-data)
+5. [Using multiple operating systems and architectures](docs/advanced-usage.md#multiple-operating-systems-and-architectures)
+6. [Publishing to npmjs and GPR with npm](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-npm)
+7. [Publishing to npmjs and GPR with yarn](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-yarn)
+8. [Using private packages](docs/advanced-usage.md#use-private-packages)
 
-Use private packages:
-```yaml
-steps:
-- uses: actions/checkout@v2
-- uses: actions/setup-node@v1
-  with:
-    node-version: '10.x'
-    registry-url: 'https://registry.npmjs.org'
-# Skip post-install scripts here, as a malicious
-# script could steal NODE_AUTH_TOKEN.
-- run: npm install --ignore-scripts
-  env:
-    NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-# `npm rebuild` will run all those post-install scripts for us.
-- run: npm rebuild && npm run prepare --if-present
-```
-
-
-# License
+## License
 
 The scripts and documentation in this project are released under the [MIT License](LICENSE)
 
-# Contributions
+## Contributions
 
-Contributions are welcome!  See [Contributor's Guide](docs/contributors.md)
+Contributions are welcome! See [Contributor's Guide](docs/contributors.md)
+
+## Code of Conduct
+
+:wave: Be nice. See [our code of conduct](CODE_OF_CONDUCT.md)

__tests__/__snapshots__/authutil.test.ts.snap

@@ -1,31 +0,0 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
-
-exports[`installer tests Appends trailing slash to registry 1`] = `
-"//registry.npmjs.org/:_authToken=\${NODE_AUTH_TOKEN}
-registry=https://registry.npmjs.org/
-always-auth=false"
-`;
-
-exports[`installer tests Automatically configures GPR scope 1`] = `
-"npm.pkg.github.com/:_authToken=\${NODE_AUTH_TOKEN}
-@ownername:registry=npm.pkg.github.com/
-always-auth=false"
-`;
-
-exports[`installer tests Configures scoped npm registries 1`] = `
-"//registry.npmjs.org/:_authToken=\${NODE_AUTH_TOKEN}
-@myscope:registry=https://registry.npmjs.org/
-always-auth=false"
-`;
-
-exports[`installer tests Sets up npmrc for always-auth true 1`] = `
-"//registry.npmjs.org/:_authToken=\${NODE_AUTH_TOKEN}
-registry=https://registry.npmjs.org/
-always-auth=true"
-`;
-
-exports[`installer tests Sets up npmrc for npmjs 1`] = `
-"//registry.npmjs.org/:_authToken=\${NODE_AUTH_TOKEN}
-registry=https://registry.npmjs.org/
-always-auth=false"
-`;

__tests__/authutil.test.ts

@@ -1,22 +1,28 @@
-import * as io from '@actions/io';
+import os = require('os');
 import * as fs from 'fs';
 import * as path from 'path';
+import * as core from '@actions/core';
+import * as io from '@actions/io';
 import * as auth from '../src/authutil';
 
 let rcFile: string;
 
-describe('installer tests', () => {
+describe('authutil tests', () => {
+  const _runnerDir = path.join(__dirname, 'runner');
+
+  let cnSpy: jest.SpyInstance;
+  let logSpy: jest.SpyInstance;
+  let dbgSpy: jest.SpyInstance;
+
   beforeAll(async () => {
-    const tempDir = path.join(
-      __dirname,
-      'runner',
-      path.join(
-        Math.random()
-          .toString(36)
-          .substring(7)
-      ),
-      'temp'
+    const randPath = path.join(
+      Math.random()
+        .toString(36)
+        .substring(7)
     );
+    console.log('::stop-commands::stoptoken'); // Disable executing of runner commands when running tests in actions
+    process.env['GITHUB_ENV'] = ''; // Stub out Environment file functionality so we can verify it writes to standard out (toolkit is backwards compatible)
+    const tempDir = path.join(_runnerDir, randPath, 'temp');
     await io.rmRF(tempDir);
     await io.mkdirP(tempDir);
     process.env['GITHUB_REPOSITORY'] = 'OwnerName/repo';
@@ -24,44 +30,106 @@ describe('installer tests', () => {
     rcFile = path.join(tempDir, '.npmrc');
   }, 100000);
 
-  beforeEach(() => {
-    if (fs.existsSync(rcFile)) {
-      fs.unlinkSync(rcFile);
-    }
+  beforeEach(async () => {
+    await io.rmRF(rcFile);
+    // if (fs.existsSync(rcFile)) {
+    //   fs.unlinkSync(rcFile);
+    // }
     process.env['INPUT_SCOPE'] = '';
-  });
+
+    // writes
+    cnSpy = jest.spyOn(process.stdout, 'write');
+    logSpy = jest.spyOn(console, 'log');
+    dbgSpy = jest.spyOn(core, 'debug');
+    cnSpy.mockImplementation(line => {
+      // uncomment to debug
+      // process.stderr.write('write:' + line + '\n');
+    });
+    logSpy.mockImplementation(line => {
+      // uncomment to debug
+      // process.stderr.write('log:' + line + '\n');
+    });
+    dbgSpy.mockImplementation(msg => {
+      // uncomment to see debug output
+      // process.stderr.write(msg + '\n');
+    });
+  }, 100000);
+
+  function dbg(message: string) {
+    process.stderr.write('dbg::' + message + '::\n');
+  }
+
+  afterAll(async () => {
+    if (_runnerDir) {
+      await io.rmRF(_runnerDir);
+    }
+    console.log('::stoptoken::'); // Re-enable executing of runner commands when running tests in actions
+  }, 100000);
+
+  function readRcFile(rcFile: string) {
+    let rc = {};
+    let contents = fs.readFileSync(rcFile, {encoding: 'utf8'});
+    for (const line of contents.split(os.EOL)) {
+      let parts = line.split('=');
+      if (parts.length == 2) {
+        rc[parts[0].trim()] = parts[1].trim();
+      }
+    }
+    return rc;
+  }
 
   it('Sets up npmrc for npmjs', async () => {
     await auth.configAuthentication('https://registry.npmjs.org/', 'false');
-    expect(fs.existsSync(rcFile)).toBe(true);
-    expect(fs.readFileSync(rcFile, {encoding: 'utf8'})).toMatchSnapshot();
+
+    expect(fs.statSync(rcFile)).toBeDefined();
+    let contents = fs.readFileSync(rcFile, {encoding: 'utf8'});
+    let rc = readRcFile(rcFile);
+    expect(rc['registry']).toBe('https://registry.npmjs.org/');
+    expect(rc['always-auth']).toBe('false');
   });
 
   it('Appends trailing slash to registry', async () => {
     await auth.configAuthentication('https://registry.npmjs.org', 'false');
 
-    expect(fs.existsSync(rcFile)).toBe(true);
-    expect(fs.readFileSync(rcFile, {encoding: 'utf8'})).toMatchSnapshot();
+    expect(fs.statSync(rcFile)).toBeDefined();
+    let rc = readRcFile(rcFile);
+    expect(rc['registry']).toBe('https://registry.npmjs.org/');
+    expect(rc['always-auth']).toBe('false');
   });
 
   it('Configures scoped npm registries', async () => {
     process.env['INPUT_SCOPE'] = 'myScope';
     await auth.configAuthentication('https://registry.npmjs.org', 'false');
 
-    expect(fs.existsSync(rcFile)).toBe(true);
-    expect(fs.readFileSync(rcFile, {encoding: 'utf8'})).toMatchSnapshot();
+    expect(fs.statSync(rcFile)).toBeDefined();
+    let rc = readRcFile(rcFile);
+    expect(rc['@myscope:registry']).toBe('https://registry.npmjs.org/');
+    expect(rc['always-auth']).toBe('false');
   });
 
   it('Automatically configures GPR scope', async () => {
     await auth.configAuthentication('npm.pkg.github.com', 'false');
 
-    expect(fs.existsSync(rcFile)).toBe(true);
-    expect(fs.readFileSync(rcFile, {encoding: 'utf8'})).toMatchSnapshot();
+    expect(fs.statSync(rcFile)).toBeDefined();
+    let rc = readRcFile(rcFile);
+    expect(rc['@ownername:registry']).toBe('npm.pkg.github.com/');
+    expect(rc['always-auth']).toBe('false');
   });
 
   it('Sets up npmrc for always-auth true', async () => {
     await auth.configAuthentication('https://registry.npmjs.org/', 'true');
-    expect(fs.existsSync(rcFile)).toBe(true);
-    expect(fs.readFileSync(rcFile, {encoding: 'utf8'})).toMatchSnapshot();
+    expect(fs.statSync(rcFile)).toBeDefined();
+    let rc = readRcFile(rcFile);
+    expect(rc['registry']).toBe('https://registry.npmjs.org/');
+    expect(rc['always-auth']).toBe('true');
+  });
+  it('It is already set the NODE_AUTH_TOKEN export it ', async () => {
+    process.env.NODE_AUTH_TOKEN = 'foobar';
+    await auth.configAuthentication('npm.pkg.github.com', 'false');
+    expect(fs.statSync(rcFile)).toBeDefined();
+    let rc = readRcFile(rcFile);
+    expect(rc['@ownername:registry']).toBe('npm.pkg.github.com/');
+    expect(rc['always-auth']).toBe('false');
+    expect(process.env.NODE_AUTH_TOKEN).toEqual('foobar');
   });
 });

__tests__/cache-restore.test.ts

@@ -0,0 +1,180 @@
+import * as core from '@actions/core';
+import * as cache from '@actions/cache';
+import * as path from 'path';
+import * as glob from '@actions/glob';
+
+import * as utils from '../src/cache-utils';
+import {restoreCache} from '../src/cache-restore';
+
+describe('cache-restore', () => {
+  process.env['GITHUB_WORKSPACE'] = path.join(__dirname, 'data');
+  if (!process.env.RUNNER_OS) {
+    process.env.RUNNER_OS = 'Linux';
+  }
+  const platform = process.env.RUNNER_OS;
+  const commonPath = '/some/random/path';
+  const npmCachePath = `${commonPath}/npm`;
+  const pnpmCachePath = `${commonPath}/pnpm`;
+  const yarn1CachePath = `${commonPath}/yarn1`;
+  const yarn2CachePath = `${commonPath}/yarn2`;
+  const yarnFileHash =
+    'b8a0bae5243251f7c07dd52d1f78ff78281dfefaded700a176261b6b54fa245b';
+  const npmFileHash =
+    'abf7c9b306a3149dcfba4673e2362755503bcceaab46f0e4e6fee0ade493e20c';
+  const pnpmFileHash =
+    '26309058093e84713f38869c50cf1cee9b08155ede874ec1b44ce3fca8c68c70';
+  const cachesObject = {
+    [npmCachePath]: npmFileHash,
+    [pnpmCachePath]: pnpmFileHash,
+    [yarn1CachePath]: yarnFileHash,
+    [yarn2CachePath]: yarnFileHash
+  };
+
+  function findCacheFolder(command: string) {
+    switch (command) {
+      case utils.supportedPackageManagers.npm.getCacheFolderCommand:
+        return npmCachePath;
+      case utils.supportedPackageManagers.pnpm.getCacheFolderCommand:
+        return pnpmCachePath;
+      case utils.supportedPackageManagers.yarn1.getCacheFolderCommand:
+        return yarn1CachePath;
+      case utils.supportedPackageManagers.yarn2.getCacheFolderCommand:
+        return yarn2CachePath;
+      default:
+        return 'packge/not/found';
+    }
+  }
+
+  let saveStateSpy: jest.SpyInstance;
+  let infoSpy: jest.SpyInstance;
+  let debugSpy: jest.SpyInstance;
+  let setOutputSpy: jest.SpyInstance;
+  let getCommandOutputSpy: jest.SpyInstance;
+  let restoreCacheSpy: jest.SpyInstance;
+  let hashFilesSpy: jest.SpyInstance;
+
+  beforeEach(() => {
+    // core
+    infoSpy = jest.spyOn(core, 'info');
+    infoSpy.mockImplementation(() => undefined);
+
+    debugSpy = jest.spyOn(core, 'debug');
+    debugSpy.mockImplementation(() => undefined);
+
+    setOutputSpy = jest.spyOn(core, 'setOutput');
+    setOutputSpy.mockImplementation(() => undefined);
+
+    saveStateSpy = jest.spyOn(core, 'saveState');
+    saveStateSpy.mockImplementation(() => undefined);
+
+    // glob
+    hashFilesSpy = jest.spyOn(glob, 'hashFiles');
+    hashFilesSpy.mockImplementation((pattern: string) => {
+      if (pattern.includes('package-lock.json')) {
+        return npmFileHash;
+      } else if (pattern.includes('pnpm-lock.yaml')) {
+        return pnpmFileHash;
+      } else if (pattern.includes('yarn.lock')) {
+        return yarnFileHash;
+      } else {
+        return '';
+      }
+    });
+
+    // cache
+    restoreCacheSpy = jest.spyOn(cache, 'restoreCache');
+    restoreCacheSpy.mockImplementation(
+      (cachePaths: Array<string>, key: string) => {
+        if (!cachePaths || cachePaths.length === 0) {
+          return undefined;
+        }
+
+        const cachPath = cachePaths[0];
+        const fileHash = cachesObject[cachPath];
+
+        if (key.includes(fileHash)) {
+          return key;
+        }
+
+        return undefined;
+      }
+    );
+
+    // cache-utils
+    getCommandOutputSpy = jest.spyOn(utils, 'getCommandOutput');
+  });
+
+  describe('Validate provided package manager', () => {
+    it.each([['npm7'], ['npm6'], ['pnpm6'], ['yarn1'], ['yarn2'], ['random']])(
+      'Throw an error because %s is not supported',
+      async packageManager => {
+        await expect(restoreCache(packageManager)).rejects.toThrowError(
+          `Caching for '${packageManager}' is not supported`
+        );
+      }
+    );
+  });
+
+  describe('Restore dependencies', () => {
+    it.each([
+      ['yarn', '2.1.2', yarnFileHash],
+      ['yarn', '1.2.3', yarnFileHash],
+      ['npm', '', npmFileHash],
+      ['pnpm', '', pnpmFileHash]
+    ])(
+      'restored dependencies for %s',
+      async (packageManager, toolVersion, fileHash) => {
+        getCommandOutputSpy.mockImplementation((command: string) => {
+          if (command.includes('version')) {
+            return toolVersion;
+          } else {
+            return findCacheFolder(command);
+          }
+        });
+
+        await restoreCache(packageManager);
+        expect(hashFilesSpy).toHaveBeenCalled();
+        expect(infoSpy).toHaveBeenCalledWith(
+          `Cache restored from key: node-cache-${platform}-${packageManager}-${fileHash}`
+        );
+        expect(infoSpy).not.toHaveBeenCalledWith(
+          `${packageManager} cache is not found`
+        );
+        expect(setOutputSpy).toHaveBeenCalledWith('cache-hit', true);
+      }
+    );
+  });
+
+  describe('Dependencies changed', () => {
+    it.each([
+      ['yarn', '2.1.2', yarnFileHash],
+      ['yarn', '1.2.3', yarnFileHash],
+      ['npm', '', npmFileHash],
+      ['pnpm', '', pnpmFileHash]
+    ])(
+      'dependencies are changed %s',
+      async (packageManager, toolVersion, fileHash) => {
+        getCommandOutputSpy.mockImplementation((command: string) => {
+          if (command.includes('version')) {
+            return toolVersion;
+          } else {
+            return findCacheFolder(command);
+          }
+        });
+
+        restoreCacheSpy.mockImplementationOnce(() => undefined);
+        await restoreCache(packageManager);
+        expect(hashFilesSpy).toHaveBeenCalled();
+        expect(infoSpy).toHaveBeenCalledWith(
+          `${packageManager} cache is not found`
+        );
+        expect(setOutputSpy).toHaveBeenCalledWith('cache-hit', false);
+      }
+    );
+  });
+
+  afterEach(() => {
+    jest.resetAllMocks();
+    jest.clearAllMocks();
+  });
+});

__tests__/cache-save.test.ts

@@ -0,0 +1,360 @@
+import * as core from '@actions/core';
+import * as cache from '@actions/cache';
+import * as glob from '@actions/glob';
+import fs from 'fs';
+import path from 'path';
+
+import * as utils from '../src/cache-utils';
+import {run} from '../src/cache-save';
+import {State} from '../src/constants';
+
+describe('run', () => {
+  const yarnFileHash =
+    'b8a0bae5243251f7c07dd52d1f78ff78281dfefaded700a176261b6b54fa245b';
+  const npmFileHash =
+    'abf7c9b306a3149dcfba4673e2362755503bcceaab46f0e4e6fee0ade493e20c';
+  const pnpmFileHash =
+    '26309058093e84713f38869c50cf1cee9b08155ede874ec1b44ce3fca8c68c70';
+  const commonPath = '/some/random/path';
+  process.env['GITHUB_WORKSPACE'] = path.join(__dirname, 'data');
+
+  let inputs = {} as any;
+
+  let getInputSpy: jest.SpyInstance;
+  let infoSpy: jest.SpyInstance;
+  let warningSpy: jest.SpyInstance;
+  let debugSpy: jest.SpyInstance;
+  let setFailedSpy: jest.SpyInstance;
+  let getStateSpy: jest.SpyInstance;
+  let saveCacheSpy: jest.SpyInstance;
+  let getCommandOutputSpy: jest.SpyInstance;
+  let hashFilesSpy: jest.SpyInstance;
+  let existsSpy: jest.SpyInstance;
+
+  beforeEach(() => {
+    getInputSpy = jest.spyOn(core, 'getInput');
+    getInputSpy.mockImplementation((name: string) => inputs[name]);
+
+    infoSpy = jest.spyOn(core, 'info');
+    infoSpy.mockImplementation(() => undefined);
+
+    warningSpy = jest.spyOn(core, 'warning');
+    warningSpy.mockImplementation(() => undefined);
+
+    setFailedSpy = jest.spyOn(core, 'setFailed');
+    setFailedSpy.mockImplementation(() => undefined);
+
+    debugSpy = jest.spyOn(core, 'debug');
+    debugSpy.mockImplementation(() => undefined);
+
+    getStateSpy = jest.spyOn(core, 'getState');
+
+    // cache
+    saveCacheSpy = jest.spyOn(cache, 'saveCache');
+    saveCacheSpy.mockImplementation(() => undefined);
+
+    // glob
+    hashFilesSpy = jest.spyOn(glob, 'hashFiles');
+    hashFilesSpy.mockImplementation((pattern: string) => {
+      if (pattern.includes('package-lock.json')) {
+        return npmFileHash;
+      } else if (pattern.includes('yarn.lock')) {
+        return yarnFileHash;
+      } else {
+        return '';
+      }
+    });
+
+    existsSpy = jest.spyOn(fs, 'existsSync');
+    existsSpy.mockImplementation(() => true);
+
+    // utils
+    getCommandOutputSpy = jest.spyOn(utils, 'getCommandOutput');
+  });
+
+  afterEach(() => {
+    existsSpy.mockRestore();
+  });
+
+  describe('Package manager validation', () => {
+    it('Package manager is not provided, skip caching', async () => {
+      inputs['cache'] = '';
+
+      await run();
+
+      expect(setFailedSpy).not.toHaveBeenCalled();
+      expect(infoSpy).not.toHaveBeenCalled();
+      expect(saveCacheSpy).not.toHaveBeenCalled();
+      expect(debugSpy).toHaveBeenLastCalledWith(
+        "Caching for '' is not supported"
+      );
+    });
+
+    it('Package manager is not valid, skip caching', async () => {
+      inputs['cache'] = 'yarn3';
+
+      await run();
+
+      expect(setFailedSpy).not.toHaveBeenCalled();
+      expect(infoSpy).not.toHaveBeenCalled();
+      expect(saveCacheSpy).not.toHaveBeenCalled();
+      expect(debugSpy).toHaveBeenLastCalledWith(
+        "Caching for 'yarn3' is not supported"
+      );
+    });
+  });
+
+  describe('Validate unchanged cache is not saved', () => {
+    it('should not save cache for yarn1', async () => {
+      inputs['cache'] = 'yarn';
+      getStateSpy.mockImplementation(() => yarnFileHash);
+      getCommandOutputSpy
+        .mockImplementationOnce(() => '1.2.3')
+        .mockImplementationOnce(() => `${commonPath}/yarn1`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(2);
+      expect(debugSpy).toHaveBeenCalledWith(`yarn path is ${commonPath}/yarn1`);
+      expect(debugSpy).toHaveBeenCalledWith('Consumed yarn version is 1.2.3');
+      expect(infoSpy).toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${yarnFileHash}, not saving cache.`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('should not save cache for yarn2', async () => {
+      inputs['cache'] = 'yarn';
+      getStateSpy.mockImplementation(() => yarnFileHash);
+      getCommandOutputSpy
+        .mockImplementationOnce(() => '2.2.3')
+        .mockImplementationOnce(() => `${commonPath}/yarn2`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(2);
+      expect(debugSpy).toHaveBeenCalledWith(`yarn path is ${commonPath}/yarn2`);
+      expect(debugSpy).toHaveBeenCalledWith('Consumed yarn version is 2.2.3');
+      expect(infoSpy).toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${yarnFileHash}, not saving cache.`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('should not save cache for npm', async () => {
+      inputs['cache'] = 'npm';
+      getStateSpy.mockImplementation(() => npmFileHash);
+      getCommandOutputSpy.mockImplementationOnce(() => `${commonPath}/npm`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(1);
+      expect(debugSpy).toHaveBeenCalledWith(`npm path is ${commonPath}/npm`);
+      expect(infoSpy).toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${npmFileHash}, not saving cache.`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('should not save cache for pnpm', async () => {
+      inputs['cache'] = 'pnpm';
+      getStateSpy.mockImplementation(() => pnpmFileHash);
+      getCommandOutputSpy.mockImplementationOnce(() => `${commonPath}/pnpm`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(1);
+      expect(debugSpy).toHaveBeenCalledWith(`pnpm path is ${commonPath}/pnpm`);
+      expect(infoSpy).toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${pnpmFileHash}, not saving cache.`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('action saves the cache', () => {
+    it('saves cache from yarn 1', async () => {
+      inputs['cache'] = 'yarn';
+      getStateSpy.mockImplementation((name: string) => {
+        if (name === State.CacheMatchedKey) {
+          return yarnFileHash;
+        } else {
+          return npmFileHash;
+        }
+      });
+      getCommandOutputSpy
+        .mockImplementationOnce(() => '1.2.3')
+        .mockImplementationOnce(() => `${commonPath}/yarn1`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(2);
+      expect(debugSpy).toHaveBeenCalledWith(`yarn path is ${commonPath}/yarn1`);
+      expect(debugSpy).toHaveBeenCalledWith('Consumed yarn version is 1.2.3');
+      expect(infoSpy).not.toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${yarnFileHash}, not saving cache.`
+      );
+      expect(saveCacheSpy).toHaveBeenCalled();
+      expect(infoSpy).toHaveBeenLastCalledWith(
+        `Cache saved with the key: ${npmFileHash}`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('saves cache from yarn 2', async () => {
+      inputs['cache'] = 'yarn';
+      getStateSpy.mockImplementation((name: string) => {
+        if (name === State.CacheMatchedKey) {
+          return yarnFileHash;
+        } else {
+          return npmFileHash;
+        }
+      });
+      getCommandOutputSpy
+        .mockImplementationOnce(() => '2.2.3')
+        .mockImplementationOnce(() => `${commonPath}/yarn2`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(2);
+      expect(debugSpy).toHaveBeenCalledWith(`yarn path is ${commonPath}/yarn2`);
+      expect(debugSpy).toHaveBeenCalledWith('Consumed yarn version is 2.2.3');
+      expect(infoSpy).not.toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${yarnFileHash}, not saving cache.`
+      );
+      expect(saveCacheSpy).toHaveBeenCalled();
+      expect(infoSpy).toHaveBeenLastCalledWith(
+        `Cache saved with the key: ${npmFileHash}`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('saves cache from npm', async () => {
+      inputs['cache'] = 'npm';
+      getStateSpy.mockImplementation((name: string) => {
+        if (name === State.CacheMatchedKey) {
+          return npmFileHash;
+        } else {
+          return yarnFileHash;
+        }
+      });
+      getCommandOutputSpy.mockImplementationOnce(() => `${commonPath}/npm`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(1);
+      expect(debugSpy).toHaveBeenCalledWith(`npm path is ${commonPath}/npm`);
+      expect(infoSpy).not.toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${npmFileHash}, not saving cache.`
+      );
+      expect(saveCacheSpy).toHaveBeenCalled();
+      expect(infoSpy).toHaveBeenLastCalledWith(
+        `Cache saved with the key: ${yarnFileHash}`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('saves cache from pnpm', async () => {
+      inputs['cache'] = 'pnpm';
+      getStateSpy.mockImplementation((name: string) => {
+        if (name === State.CacheMatchedKey) {
+          return pnpmFileHash;
+        } else {
+          return npmFileHash;
+        }
+      });
+      getCommandOutputSpy.mockImplementationOnce(() => `${commonPath}/pnpm`);
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(1);
+      expect(debugSpy).toHaveBeenCalledWith(`pnpm path is ${commonPath}/pnpm`);
+      expect(infoSpy).not.toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${pnpmFileHash}, not saving cache.`
+      );
+      expect(saveCacheSpy).toHaveBeenCalled();
+      expect(infoSpy).toHaveBeenLastCalledWith(
+        `Cache saved with the key: ${npmFileHash}`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('save with -1 cacheId , should not fail workflow', async () => {
+      inputs['cache'] = 'npm';
+      getStateSpy.mockImplementation((name: string) => {
+        if (name === State.CacheMatchedKey) {
+          return npmFileHash;
+        } else {
+          return yarnFileHash;
+        }
+      });
+      getCommandOutputSpy.mockImplementationOnce(() => `${commonPath}/npm`);
+      saveCacheSpy.mockImplementation(() => {
+        return -1;
+      });
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(1);
+      expect(debugSpy).toHaveBeenCalledWith(`npm path is ${commonPath}/npm`);
+      expect(infoSpy).not.toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${npmFileHash}, not saving cache.`
+      );
+      expect(saveCacheSpy).toHaveBeenCalled();
+      expect(infoSpy).not.toHaveBeenLastCalledWith(
+        `Cache saved with the key: ${yarnFileHash}`
+      );
+      expect(setFailedSpy).not.toHaveBeenCalled();
+    });
+
+    it('saves with error from toolkit, should fail workflow', async () => {
+      inputs['cache'] = 'npm';
+      getStateSpy.mockImplementation((name: string) => {
+        if (name === State.CacheMatchedKey) {
+          return npmFileHash;
+        } else {
+          return yarnFileHash;
+        }
+      });
+      getCommandOutputSpy.mockImplementationOnce(() => `${commonPath}/npm`);
+      saveCacheSpy.mockImplementation(() => {
+        throw new cache.ValidationError('Validation failed');
+      });
+
+      await run();
+
+      expect(getInputSpy).toHaveBeenCalled();
+      expect(getStateSpy).toHaveBeenCalledTimes(2);
+      expect(getCommandOutputSpy).toHaveBeenCalledTimes(1);
+      expect(debugSpy).toHaveBeenCalledWith(`npm path is ${commonPath}/npm`);
+      expect(infoSpy).not.toHaveBeenCalledWith(
+        `Cache hit occurred on the primary key ${npmFileHash}, not saving cache.`
+      );
+      expect(saveCacheSpy).toHaveBeenCalled();
+      expect(setFailedSpy).toHaveBeenCalled();
+    });
+  });
+
+  afterEach(() => {
+    jest.resetAllMocks();
+    jest.clearAllMocks();
+  });
+});

__tests__/cache-utils.test.ts

@@ -0,0 +1,74 @@
+import * as core from '@actions/core';
+import * as cache from '@actions/cache';
+import path from 'path';
+import * as utils from '../src/cache-utils';
+import {PackageManagerInfo, isCacheFeatureAvailable} from '../src/cache-utils';
+
+describe('cache-utils', () => {
+  const versionYarn1 = '1.2.3';
+
+  let debugSpy: jest.SpyInstance;
+  let getCommandOutputSpy: jest.SpyInstance;
+  let isFeatureAvailable: jest.SpyInstance;
+  let info: jest.SpyInstance;
+  let warningSpy: jest.SpyInstance;
+
+  beforeEach(() => {
+    process.env['GITHUB_WORKSPACE'] = path.join(__dirname, 'data');
+    debugSpy = jest.spyOn(core, 'debug');
+    debugSpy.mockImplementation(msg => {});
+
+    info = jest.spyOn(core, 'info');
+    warningSpy = jest.spyOn(core, 'warning');
+
+    isFeatureAvailable = jest.spyOn(cache, 'isFeatureAvailable');
+
+    getCommandOutputSpy = jest.spyOn(utils, 'getCommandOutput');
+  });
+
+  describe('getPackageManagerInfo', () => {
+    it.each<[string, PackageManagerInfo | null]>([
+      ['npm', utils.supportedPackageManagers.npm],
+      ['pnpm', utils.supportedPackageManagers.pnpm],
+      ['yarn', utils.supportedPackageManagers.yarn1],
+      ['yarn1', null],
+      ['yarn2', null],
+      ['npm7', null]
+    ])('getPackageManagerInfo for %s is %o', async (packageManager, result) => {
+      getCommandOutputSpy.mockImplementationOnce(() => versionYarn1);
+      await expect(utils.getPackageManagerInfo(packageManager)).resolves.toBe(
+        result
+      );
+    });
+  });
+
+  it('isCacheFeatureAvailable for GHES is false', () => {
+    isFeatureAvailable.mockImplementation(() => false);
+    process.env['GITHUB_SERVER_URL'] = 'https://www.test.com';
+
+    expect(() => isCacheFeatureAvailable()).toThrowError(
+      'Cache action is only supported on GHES version >= 3.5. If you are on version >=3.5 Please check with GHES admin if Actions cache service is enabled or not.'
+    );
+  });
+
+  it('isCacheFeatureAvailable for GHES has an interhal error', () => {
+    isFeatureAvailable.mockImplementation(() => false);
+    process.env['GITHUB_SERVER_URL'] = '';
+    isCacheFeatureAvailable();
+    expect(warningSpy).toHaveBeenCalledWith(
+      'The runner was not able to contact the cache service. Caching will be skipped'
+    );
+  });
+
+  it('isCacheFeatureAvailable for GHES is available', () => {
+    isFeatureAvailable.mockImplementation(() => true);
+
+    expect(isCacheFeatureAvailable()).toStrictEqual(true);
+  });
+
+  afterEach(() => {
+    process.env['GITHUB_SERVER_URL'] = '';
+    jest.resetAllMocks();
+    jest.clearAllMocks();
+  });
+});

__tests__/data/.nvmrc

@@ -0,0 +1 @@
+v14

__tests__/data/.tool-versions

@@ -0,0 +1 @@
+nodejs 14.0.0

__tests__/data/node-dist-index.json

@@ -0,0 +1,770 @@
+[
+    {
+        "version": "v14.1.0",
+        "date": "2020-04-29",
+        "files": [
+            "aix-ppc64",
+            "headers",
+            "linux-arm64",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "osx-x64-pkg",
+            "osx-x64-tar",
+            "src",
+            "win-x64-7z",
+            "win-x64-exe",
+            "win-x64-msi",
+            "win-x64-zip",
+            "win-x86-7z",
+            "win-x86-exe",
+            "win-x86-msi",
+            "win-x86-zip"
+        ],
+        "npm": "6.14.4",
+        "v8": "8.1.307.31",
+        "uv": "1.37.0",
+        "zlib": "1.2.11",
+        "openssl": "1.1.1g",
+        "modules": "83",
+        "lts": false,
+        "security": false
+    },
+    {
+        "version": "v14.0.0",
+        "date": "2020-04-21",
+        "files": [
+            "aix-ppc64",
+            "headers",
+            "linux-arm64",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "osx-x64-pkg",
+            "osx-x64-tar",
+            "src",
+            "win-x64-7z",
+            "win-x64-exe",
+            "win-x64-msi",
+            "win-x64-zip",
+            "win-x86-7z",
+            "win-x86-exe",
+            "win-x86-msi",
+            "win-x86-zip"
+        ],
+        "npm": "6.14.4",
+        "v8": "8.1.307.30",
+        "uv": "1.37.0",
+        "zlib": "1.2.11",
+        "openssl": "1.1.1f",
+        "modules": "83",
+        "lts": false,
+        "security": false
+    },
+    {
+        "version": "v13.14.0",
+        "date": "2020-04-28",
+        "files": [
+            "aix-ppc64",
+            "headers",
+            "linux-arm64",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "osx-x64-pkg",
+            "osx-x64-tar",
+            "src",
+            "sunos-x64",
+            "win-x64-7z",
+            "win-x64-exe",
+            "win-x64-msi",
+            "win-x64-zip",
+            "win-x86-7z",
+            "win-x86-exe",
+            "win-x86-msi",
+            "win-x86-zip"
+        ],
+        "npm": "6.14.4",
+        "v8": "7.9.317.25",
+        "uv": "1.37.0",
+        "zlib": "1.2.11",
+        "openssl": "1.1.1g",
+        "modules": "79",
+        "lts": false,
+        "security": false
+    },
+    {
+        "version": "v13.13.0",
+        "date": "2020-04-14",
+        "files": [
+            "aix-ppc64",
+            "headers",
+            "linux-arm64",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "osx-x64-pkg",
+            "osx-x64-tar",
+            "src",
+            "sunos-x64",
+            "win-x64-7z",
+            "win-x64-exe",
+            "win-x64-msi",
+            "win-x64-zip",
+            "win-x86-7z",
+            "win-x86-exe",
+            "win-x86-msi",
+            "win-x86-zip"
+        ],
+        "npm": "6.14.4",
+        "v8": "7.9.317.25",
+        "uv": "1.35.0",
+        "zlib": "1.2.11",
+        "openssl": "1.1.1f",
+        "modules": "79",
+        "lts": false,
+        "security": false
+    },
+    {
+        "version": "v12.16.3",
+        "date": "2020-04-28",
+        "files": [
+            "aix-ppc64",
+            "headers",
+            "linux-arm64",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "osx-x64-pkg",
+            "osx-x64-tar",
+            "src",
+            "sunos-x64",
+            "win-x64-7z",
+            "win-x64-exe",
+            "win-x64-msi",
+            "win-x64-zip",
+            "win-x86-7z",
+            "win-x86-exe",
+            "win-x86-msi",
+            "win-x86-zip"
+        ],
+        "npm": "6.14.4",
+        "v8": "7.8.279.23",
+        "uv": "1.34.2",
+        "zlib": "1.2.11",
+        "openssl": "1.1.1g",
+        "modules": "72",
+        "lts": "Erbium",
+        "security": false
+    },
+    {
+        "version": "v12.16.2",
+        "date": "2020-04-08",
+        "files": [
+            "aix-ppc64",
+            "headers",
+            "linux-arm64",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
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+            "linux-s390x",
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+        "date": "2020-03-24",
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+            "win-x64-zip",
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+            "linux-armv6l",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "linux-x86",
+            "osx-x64-pkg",
+            "osx-x64-tar",
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+            "win-x64-zip",
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+    },
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+        "date": "2019-12-17",
+        "files": [
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+            "linux-armv6l",
+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-s390x",
+            "linux-x64",
+            "linux-x86",
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+            "osx-x64-tar",
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+            "win-x64-exe",
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+            "win-x64-zip",
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+        "date": "2019-10-08",
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+            "linux-armv7l",
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+            "win-x64-exe",
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+            "win-x64-zip",
+            "win-x86-7z",
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+            "linux-ppc64le",
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+            "osx-x64-tar",
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+            "sunos-x86",
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+            "win-x64-exe",
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+            "win-x64-zip",
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+            "linux-armv7l",
+            "linux-ppc64le",
+            "linux-x64",
+            "linux-x86",
+            "osx-x64-pkg",
+            "osx-x64-tar",
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+            "win-x64-exe",
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+            "win-x64-zip",
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+            "win-x86-exe",
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+            "osx-x86-tar",
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+        "date": "2016-10-18",
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+            "linux-x86",
+            "osx-x64-pkg",
+            "osx-x64-tar",
+            "osx-x86-tar",
+            "src",
+            "sunos-x64",
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+        "openssl": "1.0.1u",
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+        "security": true
+    }
+]

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+    "lockfileVersion": 1,
+    "requires": true,
+    "dependencies": {
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+          "type-is": "~1.6.17"
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__tests__/data/package.json

@@ -0,0 +1,8 @@
+{
+  "engines": {
+    "node": "^14.0.0"
+  },
+  "volta": {
+    "node": "16.0.0"
+  }
+}

__tests__/data/pnpm-lock.yaml

@@ -0,0 +1,360 @@
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+
+specifiers:
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+
+dependencies:
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+    engines: {node: '>= 0.6'}
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+      negotiator: 0.6.2
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+
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+    resolution: {integrity: sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=}
+    dev: false
+
+  /body-parser/1.19.0:
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+      qs: 6.7.0
+      raw-body: 2.4.0
+      type-is: 1.6.18
+    dev: false
+
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+    engines: {node: '>= 0.8'}
+    dev: false
+
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+    engines: {node: '>= 0.6'}
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+    engines: {node: '>= 0.6'}
+    dev: false
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+  /cookie-signature/1.0.6:
+    resolution: {integrity: sha1-4wOogrNCzD7oylE6eZmXNNqzriw=}
+    dev: false
+
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+
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+    resolution: {integrity: sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==}
+    dependencies:
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+    dev: false
+
+  /depd/1.1.2:
+    resolution: {integrity: sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /destroy/1.0.4:
+    resolution: {integrity: sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=}
+    dev: false
+
+  /ee-first/1.1.1:
+    resolution: {integrity: sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=}
+    dev: false
+
+  /encodeurl/1.0.2:
+    resolution: {integrity: sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=}
+    engines: {node: '>= 0.8'}
+    dev: false
+
+  /escape-html/1.0.3:
+    resolution: {integrity: sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=}
+    dev: false
+
+  /etag/1.8.1:
+    resolution: {integrity: sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /express/4.17.1:
+    resolution: {integrity: sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==}
+    engines: {node: '>= 0.10.0'}
+    dependencies:
+      accepts: 1.3.7
+      array-flatten: 1.1.1
+      body-parser: 1.19.0
+      content-disposition: 0.5.3
+      content-type: 1.0.4
+      cookie: 0.4.0
+      cookie-signature: 1.0.6
+      debug: 2.6.9
+      depd: 1.1.2
+      encodeurl: 1.0.2
+      escape-html: 1.0.3
+      etag: 1.8.1
+      finalhandler: 1.1.2
+      fresh: 0.5.2
+      merge-descriptors: 1.0.1
+      methods: 1.1.2
+      on-finished: 2.3.0
+      parseurl: 1.3.3
+      path-to-regexp: 0.1.7
+      proxy-addr: 2.0.7
+      qs: 6.7.0
+      range-parser: 1.2.1
+      safe-buffer: 5.1.2
+      send: 0.17.1
+      serve-static: 1.14.1
+      setprototypeof: 1.1.1
+      statuses: 1.5.0
+      type-is: 1.6.18
+      utils-merge: 1.0.1
+      vary: 1.1.2
+    dev: false
+
+  /finalhandler/1.1.2:
+    resolution: {integrity: sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==}
+    engines: {node: '>= 0.8'}
+    dependencies:
+      debug: 2.6.9
+      encodeurl: 1.0.2
+      escape-html: 1.0.3
+      on-finished: 2.3.0
+      parseurl: 1.3.3
+      statuses: 1.5.0
+      unpipe: 1.0.0
+    dev: false
+
+  /forwarded/0.2.0:
+    resolution: {integrity: sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow==}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /fresh/0.5.2:
+    resolution: {integrity: sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac=}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /http-errors/1.7.2:
+    resolution: {integrity: sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==}
+    engines: {node: '>= 0.6'}
+    dependencies:
+      depd: 1.1.2
+      inherits: 2.0.3
+      setprototypeof: 1.1.1
+      statuses: 1.5.0
+      toidentifier: 1.0.0
+    dev: false
+
+  /http-errors/1.7.3:
+    resolution: {integrity: sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==}
+    engines: {node: '>= 0.6'}
+    dependencies:
+      depd: 1.1.2
+      inherits: 2.0.4
+      setprototypeof: 1.1.1
+      statuses: 1.5.0
+      toidentifier: 1.0.0
+    dev: false
+
+  /iconv-lite/0.4.24:
+    resolution: {integrity: sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==}
+    engines: {node: '>=0.10.0'}
+    dependencies:
+      safer-buffer: 2.1.2
+    dev: false
+
+  /inherits/2.0.3:
+    resolution: {integrity: sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=}
+    dev: false
+
+  /inherits/2.0.4:
+    resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
+    dev: false
+
+  /ipaddr.js/1.9.1:
+    resolution: {integrity: sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g==}
+    engines: {node: '>= 0.10'}
+    dev: false
+
+  /media-typer/0.3.0:
+    resolution: {integrity: sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /merge-descriptors/1.0.1:
+    resolution: {integrity: sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=}
+    dev: false
+
+  /methods/1.1.2:
+    resolution: {integrity: sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /mime-db/1.48.0:
+    resolution: {integrity: sha512-FM3QwxV+TnZYQ2aRqhlKBMHxk10lTbMt3bBkMAp54ddrNeVSfcQYOOKuGuy3Ddrm38I04If834fOUSq1yzslJQ==}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /mime-types/2.1.31:
+    resolution: {integrity: sha512-XGZnNzm3QvgKxa8dpzyhFTHmpP3l5YNusmne07VUOXxou9CqUqYa/HBy124RqtVh/O2pECas/MOcsDgpilPOPg==}
+    engines: {node: '>= 0.6'}
+    dependencies:
+      mime-db: 1.48.0
+    dev: false
+
+  /mime/1.6.0:
+    resolution: {integrity: sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==}
+    engines: {node: '>=4'}
+    hasBin: true
+    dev: false
+
+  /ms/2.0.0:
+    resolution: {integrity: sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=}
+    dev: false
+
+  /ms/2.1.1:
+    resolution: {integrity: sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==}
+    dev: false
+
+  /negotiator/0.6.2:
+    resolution: {integrity: sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw==}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /on-finished/2.3.0:
+    resolution: {integrity: sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=}
+    engines: {node: '>= 0.8'}
+    dependencies:
+      ee-first: 1.1.1
+    dev: false
+
+  /parseurl/1.3.3:
+    resolution: {integrity: sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==}
+    engines: {node: '>= 0.8'}
+    dev: false
+
+  /path-to-regexp/0.1.7:
+    resolution: {integrity: sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=}
+    dev: false
+
+  /proxy-addr/2.0.7:
+    resolution: {integrity: sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg==}
+    engines: {node: '>= 0.10'}
+    dependencies:
+      forwarded: 0.2.0
+      ipaddr.js: 1.9.1
+    dev: false
+
+  /qs/6.7.0:
+    resolution: {integrity: sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==}
+    engines: {node: '>=0.6'}
+    dev: false
+
+  /range-parser/1.2.1:
+    resolution: {integrity: sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg==}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /raw-body/2.4.0:
+    resolution: {integrity: sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==}
+    engines: {node: '>= 0.8'}
+    dependencies:
+      bytes: 3.1.0
+      http-errors: 1.7.2
+      iconv-lite: 0.4.24
+      unpipe: 1.0.0
+    dev: false
+
+  /safe-buffer/5.1.2:
+    resolution: {integrity: sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==}
+    dev: false
+
+  /safer-buffer/2.1.2:
+    resolution: {integrity: sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==}
+    dev: false
+
+  /send/0.17.1:
+    resolution: {integrity: sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==}
+    engines: {node: '>= 0.8.0'}
+    dependencies:
+      debug: 2.6.9
+      depd: 1.1.2
+      destroy: 1.0.4
+      encodeurl: 1.0.2
+      escape-html: 1.0.3
+      etag: 1.8.1
+      fresh: 0.5.2
+      http-errors: 1.7.3
+      mime: 1.6.0
+      ms: 2.1.1
+      on-finished: 2.3.0
+      range-parser: 1.2.1
+      statuses: 1.5.0
+    dev: false
+
+  /serve-static/1.14.1:
+    resolution: {integrity: sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==}
+    engines: {node: '>= 0.8.0'}
+    dependencies:
+      encodeurl: 1.0.2
+      escape-html: 1.0.3
+      parseurl: 1.3.3
+      send: 0.17.1
+    dev: false
+
+  /setprototypeof/1.1.1:
+    resolution: {integrity: sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==}
+    dev: false
+
+  /statuses/1.5.0:
+    resolution: {integrity: sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=}
+    engines: {node: '>= 0.6'}
+    dev: false
+
+  /toidentifier/1.0.0:
+    resolution: {integrity: sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==}
+    engines: {node: '>=0.6'}
+    dev: false
+
+  /type-is/1.6.18:
+    resolution: {integrity: sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==}
+    engines: {node: '>= 0.6'}
+    dependencies:
+      media-typer: 0.3.0
+      mime-types: 2.1.31
+    dev: false
+
+  /unpipe/1.0.0:
+    resolution: {integrity: sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=}
+    engines: {node: '>= 0.8'}
+    dev: false
+
+  /utils-merge/1.0.1:
+    resolution: {integrity: sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=}
+    engines: {node: '>= 0.4.0'}
+    dev: false
+
+  /vary/1.1.2:
+    resolution: {integrity: sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=}
+    engines: {node: '>= 0.8'}
+    dev: false

__tests__/data/versions-manifest.json

@@ -0,0 +1,183 @@
+[
+  {
+    "version": "14.0.0",
+    "stable": true,
+    "lts": "Fermium",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/14.0.0-20200507.99",
+    "files": [
+      {
+        "filename": "node-14.0.0-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/14.0.0-20200507.99/node-14.0.0-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-14.0.0-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/14.0.0-20200507.99/node-14.0.0-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-14.0.0-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/14.0.0-20200507.99/node-14.0.0-win32-x64.7z"
+      }
+    ]
+  },
+  {
+    "version": "13.13.0",
+    "stable": true,
+    "release_url": "https://github.com/actions/node-versions/releases/tag/13.13.0-20200507.97",
+    "files": [
+      {
+        "filename": "node-13.13.0-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/13.13.0-20200507.97/node-13.13.0-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-13.13.0-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/13.13.0-20200507.97/node-13.13.0-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-13.13.0-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/13.13.0-20200507.97/node-13.13.0-win32-x64.7z"
+      }
+    ]
+  },
+  {
+    "version": "12.16.2",
+    "stable": true,
+    "lts": "Erbium",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/12.16.2-20200507.95",
+    "files": [
+      {
+        "filename": "node-12.16.2-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-12.16.2-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-12.16.2-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-win32-x64.7z"
+      }
+    ]
+  },
+  {
+    "version": "12.0.0",
+    "stable": true,
+    "lts": "Erbium",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/12.0.0-20200507.71",
+    "files": [
+      {
+        "filename": "node-12.0.0-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/12.0.0-20200507.71/node-12.0.0-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-12.0.0-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/12.0.0-20200507.71/node-12.0.0-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-12.0.0-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/12.0.0-20200507.71/node-12.0.0-win32-x64.7z"
+      }
+    ]
+  },
+  {
+    "version": "10.20.1",
+    "stable": true,
+    "lts": "Dubnium",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/10.20.1-20200507.70",
+    "files": [
+      {
+        "filename": "node-10.20.1-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/10.20.1-20200507.70/node-10.20.1-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-10.20.1-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/10.20.1-20200507.70/node-10.20.1-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-10.20.1-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/10.20.1-20200507.70/node-10.20.1-win32-x64.7z"
+      }
+    ]
+  },
+  {
+    "version": "8.17.0",
+    "stable": true,
+    "lts": "Carbon",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/8.17.0-20200507.37",
+    "files": [
+      {
+        "filename": "node-8.17.0-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/8.17.0-20200507.37/node-8.17.0-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-8.17.0-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/8.17.0-20200507.37/node-8.17.0-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-8.17.0-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/8.17.0-20200507.37/node-8.17.0-win32-x64.7z"
+      }
+    ]
+  },
+  {
+    "version": "6.17.1",
+    "stable": true,
+    "lts": "Boron",
+    "release_url": "https://github.com/actions/node-versions/releases/tag/6.17.1-20200529.2",
+    "files": [
+      {
+        "filename": "node-6.17.1-darwin-x64.tar.gz",
+        "arch": "x64",
+        "platform": "darwin",
+        "download_url": "https://github.com/actions/node-versions/releases/download/6.17.1-20200529.2/node-6.17.1-darwin-x64.tar.gz"
+      },
+      {
+        "filename": "node-6.17.1-linux-x64.tar.gz",
+        "arch": "x64",
+        "platform": "linux",
+        "download_url": "https://github.com/actions/node-versions/releases/download/6.17.1-20200529.2/node-6.17.1-linux-x64.tar.gz"
+      },
+      {
+        "filename": "node-6.17.1-win32-x64.7z",
+        "arch": "x64",
+        "platform": "win32",
+        "download_url": "https://github.com/actions/node-versions/releases/download/6.17.1-20200529.2/node-6.17.1-win32-x64.7z"
+      }
+    ]
+  }
+]

__tests__/data/yarn.lock

@@ -0,0 +1,368 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+accepts@~1.3.7:
+  version "1.3.7"
+  resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"
+  integrity sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==
+  dependencies:
+    mime-types "~2.1.24"
+    negotiator "0.6.2"
+
+array-flatten@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-1.1.1.tgz#9a5f699051b1e7073328f2a008968b64ea2955d2"
+  integrity sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=
+
+body-parser@1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.19.0.tgz#96b2709e57c9c4e09a6fd66a8fd979844f69f08a"
+  integrity sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==
+  dependencies:
+    bytes "3.1.0"
+    content-type "~1.0.4"
+    debug "2.6.9"
+    depd "~1.1.2"
+    http-errors "1.7.2"
+    iconv-lite "0.4.24"
+    on-finished "~2.3.0"
+    qs "6.7.0"
+    raw-body "2.4.0"
+    type-is "~1.6.17"
+
+bytes@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
+  integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
+
+content-disposition@0.5.3:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.3.tgz#e130caf7e7279087c5616c2007d0485698984fbd"
+  integrity sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==
+  dependencies:
+    safe-buffer "5.1.2"
+
+content-type@~1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
+  integrity sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==
+
+cookie-signature@1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
+  integrity sha1-4wOogrNCzD7oylE6eZmXNNqzriw=
+
+cookie@0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
+  integrity sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==
+
+debug@2.6.9:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
+  dependencies:
+    ms "2.0.0"
+
+depd@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
+  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
+
+destroy@~1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
+  integrity sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=
+
+ee-first@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
+  integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
+
+encodeurl@~1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
+  integrity sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=
+
+escape-html@~1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
+  integrity sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=
+
+etag@~1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
+  integrity sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=
+
+express@^4.17.1:
+  version "4.17.1"
+  resolved "https://registry.yarnpkg.com/express/-/express-4.17.1.tgz#4491fc38605cf51f8629d39c2b5d026f98a4c134"
+  integrity sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==
+  dependencies:
+    accepts "~1.3.7"
+    array-flatten "1.1.1"
+    body-parser "1.19.0"
+    content-disposition "0.5.3"
+    content-type "~1.0.4"
+    cookie "0.4.0"
+    cookie-signature "1.0.6"
+    debug "2.6.9"
+    depd "~1.1.2"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    finalhandler "~1.1.2"
+    fresh "0.5.2"
+    merge-descriptors "1.0.1"
+    methods "~1.1.2"
+    on-finished "~2.3.0"
+    parseurl "~1.3.3"
+    path-to-regexp "0.1.7"
+    proxy-addr "~2.0.5"
+    qs "6.7.0"
+    range-parser "~1.2.1"
+    safe-buffer "5.1.2"
+    send "0.17.1"
+    serve-static "1.14.1"
+    setprototypeof "1.1.1"
+    statuses "~1.5.0"
+    type-is "~1.6.18"
+    utils-merge "1.0.1"
+    vary "~1.1.2"
+
+finalhandler@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.2.tgz#b7e7d000ffd11938d0fdb053506f6ebabe9f587d"
+  integrity sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==
+  dependencies:
+    debug "2.6.9"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    on-finished "~2.3.0"
+    parseurl "~1.3.3"
+    statuses "~1.5.0"
+    unpipe "~1.0.0"
+
+forwarded@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.1.2.tgz#98c23dab1175657b8c0573e8ceccd91b0ff18c84"
+  integrity sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ=
+
+fresh@0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.2.tgz#3d8cadd90d976569fa835ab1f8e4b23a105605a7"
+  integrity sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac=
+
+http-errors@1.7.2:
+  version "1.7.2"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
+  integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.3"
+    setprototypeof "1.1.1"
+    statuses ">= 1.5.0 < 2"
+    toidentifier "1.0.0"
+
+http-errors@~1.7.2:
+  version "1.7.3"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.3.tgz#6c619e4f9c60308c38519498c14fbb10aacebb06"
+  integrity sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.4"
+    setprototypeof "1.1.1"
+    statuses ">= 1.5.0 < 2"
+    toidentifier "1.0.0"
+
+iconv-lite@0.4.24:
+  version "0.4.24"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
+  integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
+inherits@2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
+
+inherits@2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+ipaddr.js@1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.1.tgz#bff38543eeb8984825079ff3a2a8e6cbd46781b3"
+  integrity sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g==
+
+media-typer@0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
+  integrity sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=
+
+merge-descriptors@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
+  integrity sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=
+
+methods@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
+  integrity sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=
+
+mime-db@1.47.0:
+  version "1.47.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.47.0.tgz#8cb313e59965d3c05cfbf898915a267af46a335c"
+  integrity sha512-QBmA/G2y+IfeS4oktet3qRZ+P5kPhCKRXxXnQEudYqUaEioAU1/Lq2us3D/t1Jfo4hE9REQPrbB7K5sOczJVIw==
+
+mime-types@~2.1.24:
+  version "2.1.30"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.30.tgz#6e7be8b4c479825f85ed6326695db73f9305d62d"
+  integrity sha512-crmjA4bLtR8m9qLpHvgxSChT+XoSlZi8J4n/aIdn3z92e/U47Z0V/yl+Wh9W046GgFVAmoNR/fmdbZYcSSIUeg==
+  dependencies:
+    mime-db "1.47.0"
+
+mime@1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
+  integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
+
+ms@2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
+  integrity sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==
+
+negotiator@0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.2.tgz#feacf7ccf525a77ae9634436a64883ffeca346fb"
+  integrity sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw==
+
+on-finished@~2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
+  integrity sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=
+  dependencies:
+    ee-first "1.1.1"
+
+parseurl@~1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
+  integrity sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==
+
+path-to-regexp@0.1.7:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
+  integrity sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=
+
+proxy-addr@~2.0.5:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.6.tgz#fdc2336505447d3f2f2c638ed272caf614bbb2bf"
+  integrity sha512-dh/frvCBVmSsDYzw6n926jv974gddhkFPfiN8hPOi30Wax25QZyZEGveluCgliBnqmuM+UJmBErbAUFIoDbjOw==
+  dependencies:
+    forwarded "~0.1.2"
+    ipaddr.js "1.9.1"
+
+qs@6.7.0:
+  version "6.7.0"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.7.0.tgz#41dc1a015e3d581f1621776be31afb2876a9b1bc"
+  integrity sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==
+
+range-parser@~1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/range-parser/-/range-parser-1.2.1.tgz#3cf37023d199e1c24d1a55b84800c2f3e6468031"
+  integrity sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg==
+
+raw-body@2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.4.0.tgz#a1ce6fb9c9bc356ca52e89256ab59059e13d0332"
+  integrity sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==
+  dependencies:
+    bytes "3.1.0"
+    http-errors "1.7.2"
+    iconv-lite "0.4.24"
+    unpipe "1.0.0"
+
+safe-buffer@5.1.2:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+"safer-buffer@>= 2.1.2 < 3":
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+send@0.17.1:
+  version "0.17.1"
+  resolved "https://registry.yarnpkg.com/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"
+  integrity sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==
+  dependencies:
+    debug "2.6.9"
+    depd "~1.1.2"
+    destroy "~1.0.4"
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    etag "~1.8.1"
+    fresh "0.5.2"
+    http-errors "~1.7.2"
+    mime "1.6.0"
+    ms "2.1.1"
+    on-finished "~2.3.0"
+    range-parser "~1.2.1"
+    statuses "~1.5.0"
+
+serve-static@1.14.1:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.14.1.tgz#666e636dc4f010f7ef29970a88a674320898b2f9"
+  integrity sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==
+  dependencies:
+    encodeurl "~1.0.2"
+    escape-html "~1.0.3"
+    parseurl "~1.3.3"
+    send "0.17.1"
+
+setprototypeof@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.1.tgz#7e95acb24aa92f5885e0abef5ba131330d4ae683"
+  integrity sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==
+
+"statuses@>= 1.5.0 < 2", statuses@~1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
+  integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
+
+toidentifier@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
+  integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
+
+type-is@~1.6.17, type-is@~1.6.18:
+  version "1.6.18"
+  resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.18.tgz#4e552cd05df09467dcbc4ef739de89f2cf37c131"
+  integrity sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==
+  dependencies:
+    media-typer "0.3.0"
+    mime-types "~2.1.24"
+
+unpipe@1.0.0, unpipe@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
+  integrity sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=
+
+utils-merge@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
+  integrity sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=
+
+vary@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
+  integrity sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=

__tests__/installer.test.ts

@@ -1,123 +1,971 @@
+import * as core from '@actions/core';
 import * as io from '@actions/io';
 import * as tc from '@actions/tool-cache';
-import * as fs from 'fs';
-import * as os from 'os';
-import * as path from 'path';
-import * as installer from '../src/installer';
+import * as exec from '@actions/exec';
+import * as im from '../src/installer';
+import * as cache from '@actions/cache';
+import fs from 'fs';
+import cp from 'child_process';
+import osm = require('os');
+import path from 'path';
+import each from 'jest-each';
+import * as main from '../src/main';
+import * as auth from '../src/authutil';
 
-const isWindows = process.platform === 'win32';
-let toolDir: string;
+let nodeTestManifest = require('./data/versions-manifest.json');
+let nodeTestDist = require('./data/node-dist-index.json');
 
-describe('installer tests', () => {
-  beforeAll(async () => {
-    toolDir = path.join(
-      __dirname,
-      'runner',
-      path.join(
-        Math.random()
-          .toString(36)
-          .substring(7)
-      ),
-      'tools'
+describe('setup-node', () => {
+  let inputs = {} as any;
+  let os = {} as any;
+
+  let inSpy: jest.SpyInstance;
+  let findSpy: jest.SpyInstance;
+  let cnSpy: jest.SpyInstance;
+  let logSpy: jest.SpyInstance;
+  let warningSpy: jest.SpyInstance;
+  let getManifestSpy: jest.SpyInstance;
+  let getDistSpy: jest.SpyInstance;
+  let platSpy: jest.SpyInstance;
+  let archSpy: jest.SpyInstance;
+  let dlSpy: jest.SpyInstance;
+  let exSpy: jest.SpyInstance;
+  let cacheSpy: jest.SpyInstance;
+  let dbgSpy: jest.SpyInstance;
+  let whichSpy: jest.SpyInstance;
+  let existsSpy: jest.SpyInstance;
+  let readFileSyncSpy: jest.SpyInstance;
+  let mkdirpSpy: jest.SpyInstance;
+  let execSpy: jest.SpyInstance;
+  let authSpy: jest.SpyInstance;
+  let parseNodeVersionSpy: jest.SpyInstance;
+  let isCacheActionAvailable: jest.SpyInstance;
+  let getExecOutputSpy: jest.SpyInstance;
+
+  beforeEach(() => {
+    // @actions/core
+    console.log('::stop-commands::stoptoken'); // Disable executing of runner commands when running tests in actions
+    process.env['GITHUB_PATH'] = ''; // Stub out ENV file functionality so we can verify it writes to standard out
+    process.env['GITHUB_OUTPUT'] = ''; // Stub out ENV file functionality so we can verify it writes to standard out
+    inputs = {};
+    inSpy = jest.spyOn(core, 'getInput');
+    inSpy.mockImplementation(name => inputs[name]);
+
+    // node
+    os = {};
+    platSpy = jest.spyOn(osm, 'platform');
+    platSpy.mockImplementation(() => os['platform']);
+    archSpy = jest.spyOn(osm, 'arch');
+    archSpy.mockImplementation(() => os['arch']);
+    execSpy = jest.spyOn(cp, 'execSync');
+
+    // @actions/tool-cache
+    findSpy = jest.spyOn(tc, 'find');
+    dlSpy = jest.spyOn(tc, 'downloadTool');
+    exSpy = jest.spyOn(tc, 'extractTar');
+    cacheSpy = jest.spyOn(tc, 'cacheDir');
+    getManifestSpy = jest.spyOn(tc, 'getManifestFromRepo');
+    getDistSpy = jest.spyOn(im, 'getVersionsFromDist');
+    parseNodeVersionSpy = jest.spyOn(im, 'parseNodeVersionFile');
+
+    // io
+    whichSpy = jest.spyOn(io, 'which');
+    existsSpy = jest.spyOn(fs, 'existsSync');
+    mkdirpSpy = jest.spyOn(io, 'mkdirP');
+
+    // @actions/tool-cache
+    isCacheActionAvailable = jest.spyOn(cache, 'isFeatureAvailable');
+
+    // disable authentication portion for installer tests
+    authSpy = jest.spyOn(auth, 'configAuthentication');
+    authSpy.mockImplementation(() => {});
+
+    // gets
+    getManifestSpy.mockImplementation(
+      () => <tc.IToolRelease[]>nodeTestManifest
     );
-    const tempDir = path.join(
-      __dirname,
-      'runner',
-      path.join(
-        Math.random()
-          .toString(36)
-          .substring(7)
-      ),
-      'temp'
+    getDistSpy.mockImplementation(() => <im.INodeVersion>nodeTestDist);
+
+    // writes
+    cnSpy = jest.spyOn(process.stdout, 'write');
+    logSpy = jest.spyOn(core, 'info');
+    dbgSpy = jest.spyOn(core, 'debug');
+    warningSpy = jest.spyOn(core, 'warning');
+    cnSpy.mockImplementation(line => {
+      // uncomment to debug
+      // process.stderr.write('write:' + line + '\n');
+    });
+    logSpy.mockImplementation(line => {
+      // uncomment to debug
+      // process.stderr.write('log:' + line + '\n');
+    });
+    dbgSpy.mockImplementation(msg => {
+      // uncomment to see debug output
+      // process.stderr.write(msg + '\n');
+    });
+    warningSpy.mockImplementation(msg => {
+      // uncomment to debug
+      // process.stderr.write('log:' + line + '\n');
+    });
+
+    // @actions/exec
+    getExecOutputSpy = jest.spyOn(exec, 'getExecOutput');
+    getExecOutputSpy.mockImplementation(() => 'v16.15.0');
+  });
+
+  afterEach(() => {
+    jest.resetAllMocks();
+    jest.clearAllMocks();
+    //jest.restoreAllMocks();
+  });
+
+  afterAll(async () => {
+    console.log('::stoptoken::'); // Re-enable executing of runner commands when running tests in actions
+    jest.restoreAllMocks();
+  }, 100000);
+
+  //--------------------------------------------------
+  // Manifest find tests
+  //--------------------------------------------------
+  it('can mock manifest versions', async () => {
+    let versions: tc.IToolRelease[] | null = await tc.getManifestFromRepo(
+      'actions',
+      'node-versions',
+      'mocktoken'
     );
-    await io.rmRF(toolDir);
-    await io.rmRF(tempDir);
-    process.env['RUNNER_TOOL_CACHE'] = toolDir;
-    process.env['RUNNER_TEMP'] = tempDir;
-  }, 100000);
+    expect(versions).toBeDefined();
+    expect(versions?.length).toBe(7);
+  });
 
-  it('Acquires version of node if no matching version is installed', async () => {
-    await installer.getNode('10.16.0');
-    const nodeDir = path.join(toolDir, 'node', '10.16.0', os.arch());
+  it('can mock dist versions', async () => {
+    let versions: im.INodeVersion[] = await im.getVersionsFromDist();
+    expect(versions).toBeDefined();
+    expect(versions?.length).toBe(23);
+  });
 
-    expect(fs.existsSync(`${nodeDir}.complete`)).toBe(true);
-    if (isWindows) {
-      expect(fs.existsSync(path.join(nodeDir, 'node.exe'))).toBe(true);
-    } else {
-      expect(fs.existsSync(path.join(nodeDir, 'bin', 'node'))).toBe(true);
+  it.each([
+    ['12.16.2', 'darwin', '12.16.2', 'Erbium'],
+    ['12', 'linux', '12.16.2', 'Erbium'],
+    ['10', 'win32', '10.20.1', 'Dubnium'],
+    ['*', 'linux', '14.0.0', 'Fermium']
+  ])(
+    'can find %s from manifest on %s',
+    async (versionSpec, platform, expectedVersion, expectedLts) => {
+      os.platform = platform;
+      os.arch = 'x64';
+      let versions: tc.IToolRelease[] | null = await tc.getManifestFromRepo(
+        'actions',
+        'node-versions',
+        'mocktoken'
+      );
+      expect(versions).toBeDefined();
+      let match = await tc.findFromManifest(versionSpec, true, versions);
+      expect(match).toBeDefined();
+      expect(match?.version).toBe(expectedVersion);
+      expect((match as any).lts).toBe(expectedLts);
+    }
+  );
+
+  //--------------------------------------------------
+  // Found in cache tests
+  //--------------------------------------------------
+
+  it('finds version in cache with stable true', async () => {
+    inputs['node-version'] = '12';
+    inputs.stable = 'true';
+
+    let toolPath = path.normalize('/cache/node/12.16.1/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+  });
+
+  it('finds version in cache with stable not supplied', async () => {
+    inputs['node-version'] = '12';
+
+    inSpy.mockImplementation(name => inputs[name]);
+
+    let toolPath = path.normalize('/cache/node/12.16.1/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+  });
+
+  it('finds version in cache and adds it to the path', async () => {
+    inputs['node-version'] = '12';
+
+    inSpy.mockImplementation(name => inputs[name]);
+
+    let toolPath = path.normalize('/cache/node/12.16.1/x64');
+    findSpy.mockImplementation(() => toolPath);
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('handles unhandled find error and reports error', async () => {
+    let errMsg = 'unhandled error message';
+    inputs['node-version'] = '12';
+
+    findSpy.mockImplementation(() => {
+      throw new Error(errMsg);
+    });
+
+    await main.run();
+
+    expect(cnSpy).toHaveBeenCalledWith('::error::' + errMsg + osm.EOL);
+  });
+
+  //--------------------------------------------------
+  // Manifest tests
+  //--------------------------------------------------
+
+  it('downloads a version from a manifest match', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    // a version which is in the manifest
+    let versionSpec = '12.16.2';
+    let resolvedVersion = versionSpec;
+
+    inputs['node-version'] = versionSpec;
+    inputs['always-auth'] = false;
+    inputs['token'] = 'faketoken';
+
+    let expectedUrl =
+      'https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-linux-x64.tar.gz';
+
+    // ... but not in the local cache
+    findSpy.mockImplementation(() => '');
+
+    dlSpy.mockImplementation(async () => '/some/temp/path');
+    let toolPath = path.normalize('/cache/node/12.16.2/x64');
+    exSpy.mockImplementation(async () => '/some/other/temp/path');
+    cacheSpy.mockImplementation(async () => toolPath);
+
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+
+    expect(getExecOutputSpy).toHaveBeenCalledWith(
+      'node',
+      ['--version'],
+      expect.anything()
+    );
+    expect(getExecOutputSpy).toHaveBeenCalledWith(
+      'npm',
+      ['--version'],
+      expect.anything()
+    );
+    expect(getExecOutputSpy).toHaveBeenCalledWith(
+      'yarn',
+      ['--version'],
+      expect.anything()
+    );
+    expect(dlSpy).toHaveBeenCalled();
+    expect(exSpy).toHaveBeenCalled();
+    expect(logSpy).toHaveBeenCalledWith(
+      `Acquiring ${resolvedVersion} - ${os.arch} from ${expectedUrl}`
+    );
+    expect(logSpy).toHaveBeenCalledWith(
+      `Attempting to download ${versionSpec}...`
+    );
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('falls back to a version from node dist', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    // a version which is not in the manifest but is in node dist
+    let versionSpec = '11.15.0';
+    let resolvedVersion = versionSpec;
+
+    inputs['node-version'] = versionSpec;
+    inputs['always-auth'] = false;
+    inputs['token'] = 'faketoken';
+
+    let expectedUrl =
+      'https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-linux-x64.tar.gz';
+
+    // ... but not in the local cache
+    findSpy.mockImplementation(() => '');
+
+    dlSpy.mockImplementation(async () => '/some/temp/path');
+    let toolPath = path.normalize('/cache/node/11.11.0/x64');
+    exSpy.mockImplementation(async () => '/some/other/temp/path');
+    cacheSpy.mockImplementation(async () => toolPath);
+
+    await main.run();
+
+    let expPath = path.join(toolPath, 'bin');
+
+    expect(dlSpy).toHaveBeenCalled();
+    expect(exSpy).toHaveBeenCalled();
+    expect(logSpy).toHaveBeenCalledWith(
+      'Not found in manifest.  Falling back to download directly from Node'
+    );
+    expect(logSpy).toHaveBeenCalledWith(
+      `Attempting to download ${versionSpec}...`
+    );
+    expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+  });
+
+  it('does not find a version that does not exist', async () => {
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    let versionSpec = '9.99.9';
+    inputs['node-version'] = versionSpec;
+
+    findSpy.mockImplementation(() => '');
+    await main.run();
+
+    expect(logSpy).toHaveBeenCalledWith(
+      'Not found in manifest.  Falling back to download directly from Node'
+    );
+    expect(logSpy).toHaveBeenCalledWith(
+      `Attempting to download ${versionSpec}...`
+    );
+    expect(cnSpy).toHaveBeenCalledWith(
+      `::error::Unable to find Node version '${versionSpec}' for platform ${os.platform} and architecture ${os.arch}.${osm.EOL}`
+    );
+  });
+
+  it('reports a failed download', async () => {
+    let errMsg = 'unhandled download message';
+    os.platform = 'linux';
+    os.arch = 'x64';
+
+    // a version which is in the manifest
+    let versionSpec = '12.16.2';
+    let resolvedVersion = versionSpec;
+
+    inputs['node-version'] = versionSpec;
+    inputs['always-auth'] = false;
+    inputs['token'] = 'faketoken';
+
+    findSpy.mockImplementation(() => '');
+    dlSpy.mockImplementation(() => {
+      throw new Error(errMsg);
+    });
+    await main.run();
+
+    expect(cnSpy).toHaveBeenCalledWith(`::error::${errMsg}${osm.EOL}`);
+  });
+
+  it('acquires specified architecture of node', async () => {
+    for (const {arch, version, osSpec} of [
+      {arch: 'x86', version: '12.16.2', osSpec: 'win32'},
+      {arch: 'x86', version: '14.0.0', osSpec: 'win32'}
+    ]) {
+      os.platform = osSpec;
+      os.arch = arch;
+      const fileExtension = os.platform === 'win32' ? '7z' : 'tar.gz';
+      const platform = {
+        linux: 'linux',
+        darwin: 'darwin',
+        win32: 'win'
+      }[os.platform];
+
+      inputs['node-version'] = version;
+      inputs['architecture'] = arch;
+      inputs['always-auth'] = false;
+      inputs['token'] = 'faketoken';
+
+      let expectedUrl =
+        arch === 'x64'
+          ? `https://github.com/actions/node-versions/releases/download/${version}/node-${version}-${platform}-${arch}.zip`
+          : `https://nodejs.org/dist/v${version}/node-v${version}-${platform}-${arch}.${fileExtension}`;
+
+      // ... but not in the local cache
+      findSpy.mockImplementation(() => '');
+
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      let toolPath = path.normalize(`/cache/node/${version}/${arch}`);
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+      expect(dlSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        `Acquiring ${version} - ${arch} from ${expectedUrl}`
+      );
     }
   }, 100000);
 
-  if (isWindows) {
-    it('Falls back to backup location if first one doesnt contain correct version', async () => {
-      await installer.getNode('5.10.1');
-      const nodeDir = path.join(toolDir, 'node', '5.10.1', os.arch());
+  describe('check-latest flag', () => {
+    it('use local version and dont check manifest if check-latest is not specified', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
 
-      expect(fs.existsSync(`${nodeDir}.complete`)).toBe(true);
-      expect(fs.existsSync(path.join(nodeDir, 'node.exe'))).toBe(true);
-    }, 100000);
+      inputs['node-version'] = '12';
+      inputs['check-latest'] = 'false';
 
-    it('Falls back to third location if second one doesnt contain correct version', async () => {
-      await installer.getNode('0.12.18');
-      const nodeDir = path.join(toolDir, 'node', '0.12.18', os.arch());
+      const toolPath = path.normalize('/cache/node/12.16.1/x64');
+      findSpy.mockReturnValue(toolPath);
+      await main.run();
 
-      expect(fs.existsSync(`${nodeDir}.complete`)).toBe(true);
-      expect(fs.existsSync(path.join(nodeDir, 'node.exe'))).toBe(true);
-    }, 100000);
-  }
+      expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+      expect(logSpy).not.toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(dbgSpy).not.toHaveBeenCalledWith('No manifest cached');
+      expect(dbgSpy).not.toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+    });
 
-  it('Throws if no location contains correct node version', async () => {
-    let thrown = false;
-    try {
-      await installer.getNode('1000');
-    } catch {
-      thrown = true;
-    }
-    expect(thrown).toBe(true);
+    it('check latest version and resolve it from local cache', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['node-version'] = '12';
+      inputs['check-latest'] = 'true';
+
+      const toolPath = path.normalize('/cache/node/12.16.2/x64');
+      findSpy.mockReturnValue(toolPath);
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith('No manifest cached');
+      expect(dbgSpy).toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+      expect(logSpy).toHaveBeenCalledWith("Resolved as '12.16.2'");
+      expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+    });
+
+    it('check latest version and install it from manifest', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      inputs['node-version'] = '12';
+      inputs['check-latest'] = 'true';
+
+      findSpy.mockImplementation(() => '');
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      const toolPath = path.normalize('/cache/node/12.16.2/x64');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+      const expectedUrl =
+        'https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-linux-x64.tar.gz';
+
+      await main.run();
+
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith('No manifest cached');
+      expect(dbgSpy).toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+      expect(logSpy).toHaveBeenCalledWith("Resolved as '12.16.2'");
+      expect(logSpy).toHaveBeenCalledWith(
+        `Acquiring 12.16.2 - ${os.arch} from ${expectedUrl}`
+      );
+      expect(logSpy).toHaveBeenCalledWith('Extracting ...');
+    });
+
+    it('fallback to dist if version if not found in manifest', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      // a version which is not in the manifest but is in node dist
+      let versionSpec = '11';
+
+      inputs['node-version'] = versionSpec;
+      inputs['check-latest'] = 'true';
+      inputs['always-auth'] = false;
+      inputs['token'] = 'faketoken';
+
+      // ... but not in the local cache
+      findSpy.mockImplementation(() => '');
+
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      let toolPath = path.normalize('/cache/node/11.11.0/x64');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      let expPath = path.join(toolPath, 'bin');
+
+      expect(dlSpy).toHaveBeenCalled();
+      expect(exSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith('No manifest cached');
+      expect(dbgSpy).toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Failed to resolve version ${versionSpec} from manifest`
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Attempting to download ${versionSpec}...`
+      );
+      expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+    });
+
+    it('fallback to dist if manifest is not available', async () => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+
+      // a version which is not in the manifest but is in node dist
+      let versionSpec = '12';
+
+      inputs['node-version'] = versionSpec;
+      inputs['check-latest'] = 'true';
+      inputs['always-auth'] = false;
+      inputs['token'] = 'faketoken';
+
+      // ... but not in the local cache
+      findSpy.mockImplementation(() => '');
+      getManifestSpy.mockImplementation(() => {
+        throw new Error('Unable to download manifest');
+      });
+
+      dlSpy.mockImplementation(async () => '/some/temp/path');
+      let toolPath = path.normalize('/cache/node/12.11.0/x64');
+      exSpy.mockImplementation(async () => '/some/other/temp/path');
+      cacheSpy.mockImplementation(async () => toolPath);
+
+      await main.run();
+
+      let expPath = path.join(toolPath, 'bin');
+
+      expect(dlSpy).toHaveBeenCalled();
+      expect(exSpy).toHaveBeenCalled();
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve the latest version from manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        'Unable to resolve version from manifest...'
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Failed to resolve version ${versionSpec} from manifest`
+      );
+      expect(logSpy).toHaveBeenCalledWith(
+        `Attempting to download ${versionSpec}...`
+      );
+      expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
+    });
   });
 
-  it('Acquires version of node with long paths', async () => {
-    const toolpath = await installer.getNode('8.8.1');
-    const nodeDir = path.join(toolDir, 'node', '8.8.1', os.arch());
+  describe('node-version-file flag', () => {
+    it('not used if node-version is provided', async () => {
+      // Arrange
+      inputs['node-version'] = '12';
 
-    expect(fs.existsSync(`${nodeDir}.complete`)).toBe(true);
-    if (isWindows) {
-      expect(fs.existsSync(path.join(nodeDir, 'node.exe'))).toBe(true);
-    } else {
-      expect(fs.existsSync(path.join(nodeDir, 'bin', 'node'))).toBe(true);
-    }
-  }, 100000);
+      // Act
+      await main.run();
 
-  it('Uses version of node installed in cache', async () => {
-    const nodeDir: string = path.join(toolDir, 'node', '250.0.0', os.arch());
-    await io.mkdirP(nodeDir);
-    fs.writeFileSync(`${nodeDir}.complete`, 'hello');
-    // This will throw if it doesn't find it in the cache (because no such version exists)
-    await installer.getNode('250.0.0');
-    return;
+      // Assert
+      expect(parseNodeVersionSpy).toHaveBeenCalledTimes(0);
+    });
+
+    it('not used if node-version-file not provided', async () => {
+      // Act
+      await main.run();
+
+      // Assert
+      expect(parseNodeVersionSpy).toHaveBeenCalledTimes(0);
+    });
+
+    it('reads node-version-file if provided', async () => {
+      // Arrange
+      const versionSpec = 'v14';
+      const versionFile = '.nvmrc';
+      const expectedVersionSpec = '14';
+      process.env['GITHUB_WORKSPACE'] = path.join(__dirname, 'data');
+      inputs['node-version-file'] = versionFile;
+
+      parseNodeVersionSpy.mockImplementation(() => expectedVersionSpec);
+      existsSpy.mockImplementationOnce(
+        input => input === path.join(__dirname, 'data', versionFile)
+      );
+
+      // Act
+      await main.run();
+
+      // Assert
+      expect(existsSpy).toHaveBeenCalledTimes(1);
+      expect(existsSpy).toHaveReturnedWith(true);
+      expect(parseNodeVersionSpy).toHaveBeenCalledWith(versionSpec);
+      expect(logSpy).toHaveBeenCalledWith(
+        `Resolved ${versionFile} as ${expectedVersionSpec}`
+      );
+    });
+
+    it('reads package.json as node-version-file if provided', async () => {
+      // Arrange
+      const versionSpec = fs.readFileSync(
+        path.join(__dirname, 'data/package.json'),
+        'utf-8'
+      );
+      const versionFile = 'package.json';
+      const expectedVersionSpec = '14';
+      process.env['GITHUB_WORKSPACE'] = path.join(__dirname, 'data');
+      inputs['node-version-file'] = versionFile;
+
+      parseNodeVersionSpy.mockImplementation(() => expectedVersionSpec);
+      existsSpy.mockImplementationOnce(
+        input => input === path.join(__dirname, 'data', versionFile)
+      );
+      // Act
+      await main.run();
+
+      // Assert
+      expect(existsSpy).toHaveBeenCalledTimes(1);
+      expect(existsSpy).toHaveReturnedWith(true);
+      expect(parseNodeVersionSpy).toHaveBeenCalledWith(versionSpec);
+      expect(logSpy).toHaveBeenCalledWith(
+        `Resolved ${versionFile} as ${expectedVersionSpec}`
+      );
+    });
+
+    it('both node-version-file and node-version are provided', async () => {
+      inputs['node-version'] = '12';
+      const versionSpec = 'v14';
+      const versionFile = '.nvmrc';
+      const expectedVersionSpec = '14';
+      process.env['GITHUB_WORKSPACE'] = path.join(__dirname, '..');
+      inputs['node-version-file'] = versionFile;
+
+      parseNodeVersionSpy.mockImplementation(() => expectedVersionSpec);
+
+      // Act
+      await main.run();
+
+      // Assert
+      expect(existsSpy).toHaveBeenCalledTimes(0);
+      expect(parseNodeVersionSpy).not.toHaveBeenCalled();
+      expect(warningSpy).toHaveBeenCalledWith(
+        'Both node-version and node-version-file inputs are specified, only node-version will be used'
+      );
+    });
+
+    it('should throw an error if node-version-file is not found', async () => {
+      const versionFile = '.nvmrc';
+      const versionFilePath = path.join(__dirname, '..', versionFile);
+      inputs['node-version-file'] = versionFile;
+
+      inSpy.mockImplementation(name => inputs[name]);
+      existsSpy.mockImplementationOnce(
+        input => input === path.join(__dirname, 'data', versionFile)
+      );
+
+      // Act
+      await main.run();
+
+      // Assert
+      expect(existsSpy).toHaveBeenCalled();
+      expect(existsSpy).toHaveReturnedWith(false);
+      expect(parseNodeVersionSpy).not.toHaveBeenCalled();
+      expect(cnSpy).toHaveBeenCalledWith(
+        `::error::The specified node version file at: ${versionFilePath} does not exist${osm.EOL}`
+      );
+    });
   });
 
-  it('Doesnt use version of node that was only partially installed in cache', async () => {
-    const nodeDir: string = path.join(toolDir, 'node', '251.0.0', os.arch());
-    await io.mkdirP(nodeDir);
-    let thrown = false;
-    try {
-      // This will throw if it doesn't find it in the cache (because no such version exists)
-      await installer.getNode('251.0.0');
-    } catch {
-      thrown = true;
-    }
-    expect(thrown).toBe(true);
-    return;
+  describe('cache on GHES', () => {
+    it('Should throw an error, because cache is not supported', async () => {
+      inputs['node-version'] = '12';
+      inputs['cache'] = 'npm';
+
+      inSpy.mockImplementation(name => inputs[name]);
+
+      let toolPath = path.normalize('/cache/node/12.16.1/x64');
+      findSpy.mockImplementation(() => toolPath);
+
+      // expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+      process.env['GITHUB_SERVER_URL'] = 'https://www.test.com';
+      isCacheActionAvailable.mockImplementation(() => false);
+
+      await main.run();
+
+      expect(cnSpy).toHaveBeenCalledWith(
+        `::error::Cache action is only supported on GHES version >= 3.5. If you are on version >=3.5 Please check with GHES admin if Actions cache service is enabled or not.${osm.EOL}`
+      );
+    });
+
+    it('Should throw an internal error', async () => {
+      inputs['node-version'] = '12';
+      inputs['cache'] = 'npm';
+
+      inSpy.mockImplementation(name => inputs[name]);
+
+      let toolPath = path.normalize('/cache/node/12.16.1/x64');
+      findSpy.mockImplementation(() => toolPath);
+
+      // expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+      process.env['GITHUB_SERVER_URL'] = '';
+      isCacheActionAvailable.mockImplementation(() => false);
+
+      await main.run();
+
+      expect(warningSpy).toHaveBeenCalledWith(
+        'The runner was not able to contact the cache service. Caching will be skipped'
+      );
+    });
   });
 
-  it('Resolves semantic versions of node installed in cache', async () => {
-    const nodeDir: string = path.join(toolDir, 'node', '252.0.0', os.arch());
-    await io.mkdirP(nodeDir);
-    fs.writeFileSync(`${nodeDir}.complete`, 'hello');
-    // These will throw if it doesn't find it in the cache (because no such version exists)
-    await installer.getNode('252.0.0');
-    await installer.getNode('252');
-    await installer.getNode('252.0');
+  describe('LTS version', () => {
+    beforeEach(() => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+      inputs.stable = 'true';
+    });
+
+    it.each([
+      ['erbium', '12.16.2'],
+      ['*', '14.0.0'],
+      ['-1', '12.16.2']
+    ])(
+      'find latest LTS version and resolve it from local cache (lts/%s)',
+      async (lts, expectedVersion) => {
+        // arrange
+        inputs['node-version'] = `lts/${lts}`;
+
+        const toolPath = path.normalize(`/cache/node/${expectedVersion}/x64`);
+        findSpy.mockReturnValue(toolPath);
+
+        // act
+        await main.run();
+
+        // assert
+        expect(logSpy).toHaveBeenCalledWith(
+          'Attempt to resolve LTS alias from manifest...'
+        );
+        expect(dbgSpy).toHaveBeenCalledWith(
+          'Getting manifest from actions/node-versions@main'
+        );
+        expect(dbgSpy).not.toHaveBeenCalledWith('No manifest cached');
+        expect(dbgSpy).toHaveBeenCalledWith(
+          `LTS alias '${lts}' for Node version 'lts/${lts}'`
+        );
+        expect(dbgSpy).toHaveBeenCalledWith(
+          `Found LTS release '${expectedVersion}' for Node version 'lts/${lts}'`
+        );
+        expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+        expect(cnSpy).toHaveBeenCalledWith(
+          `::add-path::${path.join(toolPath, 'bin')}${osm.EOL}`
+        );
+      }
+    );
+
+    it.each([
+      [
+        'erbium',
+        '12.16.2',
+        'https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-linux-x64.tar.gz'
+      ],
+      [
+        '*',
+        '14.0.0',
+        'https://github.com/actions/node-versions/releases/download/14.0.0-20200507.99/node-14.0.0-linux-x64.tar.gz'
+      ],
+      [
+        '-1',
+        '12.16.2',
+        'https://github.com/actions/node-versions/releases/download/12.16.2-20200507.95/node-12.16.2-linux-x64.tar.gz'
+      ]
+    ])(
+      'find latest LTS version and install it from manifest (lts/%s)',
+      async (lts, expectedVersion, expectedUrl) => {
+        // arrange
+        inputs['node-version'] = `lts/${lts}`;
+
+        const toolPath = path.normalize(`/cache/node/${expectedVersion}/x64`);
+        findSpy.mockImplementation(() => '');
+        dlSpy.mockImplementation(async () => '/some/temp/path');
+        exSpy.mockImplementation(async () => '/some/other/temp/path');
+        cacheSpy.mockImplementation(async () => toolPath);
+        const expectedMajor = expectedVersion.split('.')[0];
+
+        // act
+        await main.run();
+
+        // assert
+        expect(logSpy).toHaveBeenCalledWith(
+          'Attempt to resolve LTS alias from manifest...'
+        );
+        expect(dbgSpy).toHaveBeenCalledWith(
+          'Getting manifest from actions/node-versions@main'
+        );
+        expect(dbgSpy).not.toHaveBeenCalledWith('No manifest cached');
+        expect(dbgSpy).toHaveBeenCalledWith(
+          `LTS alias '${lts}' for Node version 'lts/${lts}'`
+        );
+        expect(dbgSpy).toHaveBeenCalledWith(
+          `Found LTS release '${expectedVersion}' for Node version 'lts/${lts}'`
+        );
+        expect(logSpy).toHaveBeenCalledWith(
+          `Attempting to download ${expectedMajor}...`
+        );
+        expect(logSpy).toHaveBeenCalledWith(
+          `Acquiring ${expectedVersion} - ${os.arch} from ${expectedUrl}`
+        );
+        expect(logSpy).toHaveBeenCalledWith('Extracting ...');
+        expect(logSpy).toHaveBeenCalledWith('Adding to the cache ...');
+        expect(cnSpy).toHaveBeenCalledWith(
+          `::add-path::${path.join(toolPath, 'bin')}${osm.EOL}`
+        );
+      }
+    );
+
+    it('fail with unable to parse LTS alias (lts/)', async () => {
+      // arrange
+      inputs['node-version'] = 'lts/';
+
+      findSpy.mockImplementation(() => '');
+
+      // act
+      await main.run();
+
+      // assert
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve LTS alias from manifest...'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+      expect(cnSpy).toHaveBeenCalledWith(
+        `::error::Unable to parse LTS alias for Node version 'lts/'${osm.EOL}`
+      );
+    });
+
+    it('fail to find LTS version (lts/unknown)', async () => {
+      // arrange
+      inputs['node-version'] = 'lts/unknown';
+
+      findSpy.mockImplementation(() => '');
+
+      // act
+      await main.run();
+
+      // assert
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve LTS alias from manifest...'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith(
+        `LTS alias 'unknown' for Node version 'lts/unknown'`
+      );
+      expect(cnSpy).toHaveBeenCalledWith(
+        `::error::Unable to find LTS release 'unknown' for Node version 'lts/unknown'.${osm.EOL}`
+      );
+    });
+
+    it('fail if manifest is not available', async () => {
+      // arrange
+      inputs['node-version'] = 'lts/erbium';
+
+      // ... but not in the local cache
+      findSpy.mockImplementation(() => '');
+      getManifestSpy.mockImplementation(() => {
+        throw new Error('Unable to download manifest');
+      });
+
+      // act
+      await main.run();
+
+      // assert
+      expect(logSpy).toHaveBeenCalledWith(
+        'Attempt to resolve LTS alias from manifest...'
+      );
+      expect(dbgSpy).toHaveBeenCalledWith(
+        'Getting manifest from actions/node-versions@main'
+      );
+      expect(cnSpy).toHaveBeenCalledWith(
+        `::error::Unable to download manifest${osm.EOL}`
+      );
+    });
+  });
+
+  describe('latest alias syntax', () => {
+    it.each(['latest', 'current', 'node'])(
+      'download the %s version if alias is provided',
+      async inputVersion => {
+        // Arrange
+        inputs['node-version'] = inputVersion;
+
+        os.platform = 'darwin';
+        os.arch = 'x64';
+
+        findSpy.mockImplementation(() => '');
+        getManifestSpy.mockImplementation(() => {
+          throw new Error('Unable to download manifest');
+        });
+
+        // Act
+        await main.run();
+
+        // assert
+        expect(logSpy).toHaveBeenCalledWith('Unable to download manifest');
+
+        expect(logSpy).toHaveBeenCalledWith('getting latest node version...');
+      }
+    );
+  });
+
+  describe('latest alias syntax from cache', () => {
+    it.each(['latest', 'current', 'node'])(
+      'download the %s version if alias is provided',
+      async inputVersion => {
+        // Arrange
+        inputs['node-version'] = inputVersion;
+        const expectedVersion = nodeTestDist[0];
+
+        os.platform = 'darwin';
+        os.arch = 'x64';
+
+        const toolPath = path.normalize(
+          `/cache/node/${expectedVersion.version}/x64`
+        );
+        findSpy.mockReturnValue(toolPath);
+
+        // Act
+        await main.run();
+
+        // assert
+        expect(logSpy).toHaveBeenCalledWith(`Found in cache @ ${toolPath}`);
+
+        expect(logSpy).toHaveBeenCalledWith('getting latest node version...');
+      }
+    );
+  });
+});
+
+describe('helper methods', () => {
+  describe('parseNodeVersionFile', () => {
+    each`
+      contents                                     | expected
+      ${'12'}                                      | ${'12'}
+      ${'12.3'}                                    | ${'12.3'}
+      ${'12.3.4'}                                  | ${'12.3.4'}
+      ${'v12.3.4'}                                 | ${'12.3.4'}
+      ${'lts/erbium'}                              | ${'lts/erbium'}
+      ${'lts/*'}                                   | ${'lts/*'}
+      ${'nodejs 12.3.4'}                           | ${'12.3.4'}
+      ${'ruby 2.3.4\nnodejs 12.3.4\npython 3.4.5'} | ${'12.3.4'}
+      ${''}                                        | ${''}
+      ${'unknown format'}                          | ${'unknown format'}
+    `.it('parses "$contents"', ({contents, expected}) => {
+      expect(im.parseNodeVersionFile(contents)).toBe(expected);
+    });
   });
 });

__tests__/problem-matcher.test.ts

@@ -0,0 +1,43 @@
+describe('problem matcher tests', () => {
+  it('tsc: matches TypeScript "pretty" error message', () => {
+    const [
+      {
+        pattern: [{regexp}]
+      }
+    ] = require('../.github/tsc.json').problemMatcher;
+    const exampleErrorMessage =
+      "lib/index.js:23:42 - error TS2345: Argument of type 'A' is not assignable to parameter of type 'B'.";
+
+    const match = exampleErrorMessage.match(new RegExp(regexp));
+    expect(match).not.toBeNull();
+    expect(match![1]).toEqual('lib/index.js');
+    expect(match![2]).toEqual('23');
+    expect(match![3]).toEqual('42');
+    expect(match![4]).toEqual('error');
+    expect(match![5]).toEqual('2345');
+    expect(match![6]).toEqual(
+      "Argument of type 'A' is not assignable to parameter of type 'B'."
+    );
+  });
+
+  it('tsc: matches TypeScript error message from log file', () => {
+    const [
+      {
+        pattern: [{regexp}]
+      }
+    ] = require('../.github/tsc.json').problemMatcher;
+    const exampleErrorMessage =
+      "lib/index.js(23,42): error TS2345: Argument of type 'A' is not assignable to parameter of type 'B'.";
+
+    const match = exampleErrorMessage.match(new RegExp(regexp));
+    expect(match).not.toBeNull();
+    expect(match![1]).toEqual('lib/index.js');
+    expect(match![2]).toEqual('23');
+    expect(match![3]).toEqual('42');
+    expect(match![4]).toEqual('error');
+    expect(match![5]).toEqual('2345');
+    expect(match![6]).toEqual(
+      "Argument of type 'A' is not assignable to parameter of type 'B'."
+    );
+  });
+});

__tests__/verify-arch.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ -n "$1" ]; then
+  architecture="$(node -e 'console.log(process.arch)')"
+  if [ -z "$(echo $architecture | grep --fixed-strings $1)" ]; then
+    echo "Unexpected architecture"
+    exit 1
+  fi
+else
+  echo "Skip testing architecture"
+fi

__tests__/verify-no-unstaged-changes.sh

@@ -1,17 +0,0 @@
-#!/bin/bash
-
-if [[ "$(git status --porcelain)" != "" ]]; then
-    echo ----------------------------------------
-    echo git status
-    echo ----------------------------------------
-    git status
-    echo ----------------------------------------
-    echo git diff
-    echo ----------------------------------------
-    git diff
-    echo ----------------------------------------
-    echo Troubleshooting
-    echo ----------------------------------------
-    echo "::error::Unstaged changes detected. Locally try running: git clean -ffdx && npm ci && npm run pre-checkin"
-    exit 1
-fi

action.yml

@@ -1,21 +1,39 @@
 name: 'Setup Node.js environment'
-description: 'Setup a Node.js environment and add it to the PATH, additionally providing proxy support'
+description: 'Setup a Node.js environment by adding problem matchers and optionally downloading and adding it to the PATH.'
 author: 'GitHub'
 inputs:
   always-auth:
-    description: 'Set always-auth in npmrc'
+    description: 'Set always-auth in npmrc.'
     default: 'false'
   node-version:
-    description: 'Version Spec of the version to use.  Examples: 10.x, 10.15.1, >=10.15.0'
-    default: '10.x'
+    description: 'Version Spec of the version to use. Examples: 12.x, 10.15.1, >=10.15.0.'
+  node-version-file:
+    description: 'File containing the version Spec of the version to use.  Examples: .nvmrc, .node-version, .tool-versions.'
+  architecture:
+    description: 'Target architecture for Node to use. Examples: x86, x64. Will use system architecture by default.'
+  check-latest:
+    description: 'Set this option if you want the action to check for the latest available version that satisfies the version spec.'
+    default: false
   registry-url:
-    description: 'Optional registry to set up for auth. Will set the registry in a project level .npmrc and .yarnrc file, and set up auth to read in from env.NODE_AUTH_TOKEN'
+    description: 'Optional registry to set up for auth. Will set the registry in a project level .npmrc and .yarnrc file, and set up auth to read in from env.NODE_AUTH_TOKEN.'
   scope:
-    description: 'Optional scope for authenticating against scoped registries'
-# Deprecated option, do not use. Will not be supported after October 1, 2019
-  version:
-    description: 'Deprecated. Use node-version instead. Will not be supported after October 1, 2019'
-    deprecationMessage: 'The version property will not be supported after October 1, 2019. Use node-version instead'
+    description: 'Optional scope for authenticating against scoped registries. Will fall back to the repository owner when using the GitHub Packages registry (https://npm.pkg.github.com/).'
+  token:
+    description: Used to pull node distributions from node-versions.  Since there's a default, this is typically not supplied by the user.
+    default: ${{ github.token }}
+  cache:
+    description: 'Used to specify a package manager for caching in the default directory. Supported values: npm, yarn, pnpm.'
+  cache-dependency-path:
+    description: 'Used to specify the path to a dependency file: package-lock.json, yarn.lock, etc. Supports wildcards or a list of file names for caching multiple dependencies.'
+# TODO: add input to control forcing to pull from cloud or dist. 
+#       escape valve for someone having issues or needing the absolute latest which isn't cached yet
+outputs:
+  cache-hit: 
+    description: 'A boolean value to indicate if a cache was hit.'
+  node-version:
+    description: 'The installed node version.'
 runs:
-  using: 'node12'
-  main: 'dist/index.js'
+  using: 'node16'
+  main: 'dist/setup/index.js'
+  post: 'dist/cache-save/index.js'
+  post-if: success()

docs/adrs/0000-caching-dependencies.md

@@ -0,0 +1,59 @@
+# 0. Caching dependencies
+Date: 2021-05-21
+
+Status: Accepted
+
+# Context
+`actions/setup-node` is the 2nd most popular action in GitHub Actions. A lot of customers use it in conjunction with [actions/cache](https://github.com/actions/cache) to speed up dependencies installation.  
+See more examples on proper usage in [actions/cache documentation](https://github.com/actions/cache/blob/main/examples.md#node---npm).
+
+# Goals & Anti-Goals
+Integration of caching functionality into `actions/setup-node` action will bring the following benefits for action users:
+- Decrease the entry threshold for using the cache for Node.js dependencies and simplify initial configuration
+- Simplify YAML pipelines because no need additional steps to enable caching
+- More users will use cache for Node.js so more customers will have fast builds!
+
+We will add support for NPM and Yarn dependencies caching.  
+As the first stage, we won't support custom locations for `package-lock.json`, `yarn.lock` files and action will work only when files are located in repository root. 
+
+We don't pursue the goal to provide wide customization of caching in scope of `actions/setup-node` action. The purpose of this integration is covering ~90% of basic use-cases. If user needs flexible customization, we should advice them to use `actions/cache` directly.
+
+# Decision
+- Add `cache` input parameter to `actions/setup-node`. For now, input will accept the following values: 
+  - `npm` - enable caching for npm dependencies
+  - `yarn` - enable caching for yarn dependencies
+  - `''` - disable caching (default value)
+- Cache feature will be disabled by default to make sure that we don't break existing customers. We will consider enabling cache by default in next major release (`v3`)
+- Action will try to search `package-lock.json` or `yarn.lock` (npm 7.x supports `yarn.lock` files) files in the repository root and throw error if no one is found
+- The hash of found file will be used as cache key (the same approach like [actions/cache](https://github.com/actions/cache/blob/main/examples.md#node---npm) recommends)
+- The following key cache will be used `${{ runner.os }}-npm-${{ hashFiles('<package-lock-path>') }}`
+- Action will cache global cache:
+  - Npm (retrieved via `npm config get cache`)
+  - Yarn 1 (retrieved via `yarn cache dir`)
+  - Yarn 2 (retrieved via `yarn config get cacheFolder`)
+
+# Example of real use-cases
+Npm package manager:
+```yml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: '14'
+    cache: npm
+```
+
+Yarn package manager:
+```yml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: '14'
+    cache: yarn
+```
+
+# Release process
+
+As soon as functionality is implemented, we will release minor update of action. No need to bump major version since there are no breaking changes for existing users.
+After that, we will update [starter-workflows](https://github.com/actions/starter-workflows/blob/main/ci/node.js.yml) and [GitHub Action documentation](https://docs.github.com/en/actions/guides/building-and-testing-nodejs#example-caching-dependencies).

docs/adrs/0001-support-caching-deps-for-monorepos.md

@@ -0,0 +1,48 @@
+# 0. Support caching dependencies for mono repos
+Date: 2021-07-13
+
+Status: Proposed
+
+## Context
+Currently, `actions/setup-node` supports caching dependencies for Npm and Yarn package managers.  
+For the first iteration, we have decided to not support cases where `package-lock.json` / `yarn.lock` are located outside of repository root.  
+Current implementation searches the following file patterns in the repository root: `package-lock.json`, `yarn.lock` (in order of resolving priorities)
+
+Obviously, it made build-in caching unusable for mono-repos and repos with complex structure.  
+We would like to revisit this decision and add customization for dependencies lock file location.
+
+## Proposal
+We have the following options:
+1. Allow to specify  directory where `package-lock.json` or `yarn.lock` are located
+2. Allow to specify path to the dependencies lock file (including directory path and filename)
+
+The second option looks more generic because it allows to:
+- specify multiple dependencies files using file patterns like `**/package-lock.json` ([one of recommended approaches in actions/cache](https://github.com/actions/cache/blob/main/examples.md#macos-and-ubuntu))
+- specify custom dependencies files like `src/npm-shrinkwrap.json`
+- change default resolving priority if both `yarn.lock` and `package-lock.json` exist in repository
+
+## Decision
+
+Add `cache-dependency-path` input that will accept path (relative to repository root) to dependencies lock file.  
+If provided path contains wildcards, the action will search all maching files and calculate common hash like `${{ hashFiles('**/package-lock.json') }}` YAML construction does.  
+The hash of provided matched files will be used as a part of cache key.
+
+Yaml examples:
+```yml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: 14
+    cache: npm
+    cache-dependency-path: 'sub-project/package-lock.json'
+```
+```yml
+steps:
+- uses: actions/checkout@v2
+- uses: actions/setup-node@v2
+  with:
+    node-version: 14
+    cache: yarn
+    cache-dependency-path: 'sub-project/**/yarn.lock'
+```

docs/advanced-usage.md

@@ -0,0 +1,288 @@
+## Working with lockfiles
+
+All supported package managers recommend that you **always** commit the lockfile, although implementations vary doing so generally provides the following benefits:
+
+- Enables faster installation for CI and production environments, due to being able to skip package resolution.
+- Describes a single representation of a dependency tree such that teammates, deployments, and continuous integration are guaranteed to install exactly the same dependencies.
+- Provides a facility for users to "time-travel" to previous states of `node_modules` without having to commit the directory itself.
+- Facilitates greater visibility of tree changes through readable source control diffs.
+
+In order to get the most out of using your lockfile on continuous integration follow the conventions outlined below for your respective package manager.
+
+### NPM
+
+Ensure that `package-lock.json` is always committed, use `npm ci` instead of `npm install` when installing packages.
+
+**See also:**
+- [Documentation of `package-lock.json`](https://docs.npmjs.com/cli/v8/configuring-npm/package-lock-json)
+- [Documentation of `npm ci`](https://docs.npmjs.com/cli/v8/commands/npm-ci)
+
+### Yarn
+
+To ensure that `yarn.lock` is always committed, use `yarn install --immutable` when installing packages.
+
+**See also:**
+- [Documentation of `yarn.lock`](https://classic.yarnpkg.com/en/docs/yarn-lock)
+- [Documentation of `--frozen-lockfile` option](https://classic.yarnpkg.com/en/docs/cli/install#toc-yarn-install-frozen-lockfile)
+- [QA - Should lockfiles be committed to the repoistory?](https://yarnpkg.com/getting-started/qa/#should-lockfiles-be-committed-to-the-repository)
+- [Documentation of `yarn install`](https://yarnpkg.com/cli/install)
+
+### PNPM
+
+Ensure that `pnpm-lock.yaml` is always committed, when on CI pass `--frozen-lockfile` to `pnpm install` when installing packages.
+
+**See also:**
+- [Working with Git - Lockfiles](https://pnpm.io/git#lockfiles)
+- [Documentation of `--frozen-lockfile` option](https://pnpm.io/cli/install#--frozen-lockfile)
+
+## Check latest version
+
+The `check-latest` flag defaults to `false`. When set to `false`, the action will first check the local cache for a semver match. If unable to find a specific version in the cache, the action will attempt to download a version of Node.js. It will pull LTS versions from [node-versions releases](https://github.com/actions/node-versions/releases) and on miss or failure will fall back to the previous behavior of downloading directly from [node dist](https://nodejs.org/dist/). Use the default or set `check-latest` to `false` if you prefer stability and if you want to ensure a specific version of Node.js is always used.
+
+If `check-latest` is set to `true`, the action first checks if the cached version is the latest one. If the locally cached version is not the most up-to-date, a version of Node.js will then be downloaded. Set `check-latest` to `true` it you want the most up-to-date version of Node.js to always be used.
+
+> Setting `check-latest` to `true` has performance implications as downloading versions of Node is slower than using cached versions.
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '16'
+    check-latest: true
+- run: npm ci
+- run: npm test
+```
+
+## Node version file
+
+The `node-version-file` input accepts a path to a file containing the version of Node.js to be used by a project, for example `.nvmrc`, `.node-version`, `.tool-versions`, or `package.json`. If both the `node-version` and the `node-version-file` inputs are provided then the `node-version` input is used.
+See [supported version syntax](https://github.com/actions/setup-node#supported-version-syntax).
+
+> The action will search for the node version file relative to the repository root.
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version-file: '.nvmrc'
+- run: npm ci
+- run: npm test
+```
+
+When using the `package.json` input, the action will look for `volta.node` first. If `volta.node` isn't defined, then it will look for `engines.node`.
+
+```json
+{
+  "engines": {
+    "node": ">=16.0.0"
+  },
+  "volta": {
+    "node": "16.0.0"
+  }
+}
+```
+
+## Architecture
+
+You can use any of the [supported operating systems](https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners), and the compatible `architecture` can be selected using `architecture`. Values are `x86`, `x64`, `arm64`, `armv6l`, `armv7l`, `ppc64le`, `s390x` (not all of the architectures are available on all platforms).
+
+When using `architecture`, `node-version` must be provided as well.
+```yaml
+jobs:
+  build:
+    runs-on: windows-latest
+    name: Node sample
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '14'
+          architecture: 'x64' # optional, x64 or x86. If not specified, x64 will be used by default
+      - run: npm ci
+      - run: npm test
+```
+
+## Caching packages data
+The action follows [actions/cache](https://github.com/actions/cache/blob/main/examples.md#node---npm) guidelines, and caches global cache on the machine instead of `node_modules`, so cache can be reused between different Node.js versions.
+
+**Caching yarn dependencies:**
+Yarn caching handles both yarn versions: 1 or 2.
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14'
+    cache: 'yarn'
+- run: yarn install --frozen-lockfile # optional, --immutable
+- run: yarn test
+```
+
+**Caching pnpm (v6.10+) dependencies:**
+```yaml
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# NOTE: pnpm caching support requires pnpm version >= 6.10.0
+
+steps:
+- uses: actions/checkout@v3
+- uses: pnpm/action-setup@v2
+  with:
+    version: 6.32.9
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14'
+    cache: 'pnpm'
+- run: pnpm install --frozen-lockfile
+- run: pnpm test
+```
+
+**Using wildcard patterns to cache dependencies**
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14'
+    cache: 'npm'
+    cache-dependency-path: '**/package-lock.json'
+- run: npm ci
+- run: npm test
+```
+
+**Using a list of file paths to cache dependencies**
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14'
+    cache: 'npm'
+    cache-dependency-path: |
+      server/app/package-lock.json
+      frontend/app/package-lock.json
+- run: npm ci
+- run: npm test
+```
+
+## Multiple Operating Systems and Architectures
+
+```yaml
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+        node_version:
+          - 12
+          - 14
+          - 16
+        architecture:
+          - x64
+        # an extra windows-x86 run:
+        include:
+          - os: windows-2016
+            node_version: 12
+            architecture: x86
+    name: Node ${{ matrix.node_version }} - ${{ matrix.architecture }} on ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup node
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node_version }}
+          architecture: ${{ matrix.architecture }}
+      - run: npm ci
+      - run: npm test
+```
+
+## Publish to npmjs and GPR with npm
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14.x'
+    registry-url: 'https://registry.npmjs.org'
+- run: npm ci
+- run: npm publish
+  env:
+    NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+- uses: actions/setup-node@v3
+  with:
+    registry-url: 'https://npm.pkg.github.com'
+- run: npm publish
+  env:
+    NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+```
+
+## Publish to npmjs and GPR with yarn
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14.x'
+    registry-url: <registry url>
+- run: yarn install --frozen-lockfile
+- run: yarn publish
+  env:
+    NODE_AUTH_TOKEN: ${{ secrets.YARN_TOKEN }}
+- uses: actions/setup-node@v3
+  with:
+    registry-url: 'https://npm.pkg.github.com'
+- run: yarn publish
+  env:
+    NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+```
+
+## Use private packages
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14.x'
+    registry-url: 'https://registry.npmjs.org'
+# Skip post-install scripts here, as a malicious
+# script could steal NODE_AUTH_TOKEN.
+- run: npm ci --ignore-scripts
+  env:
+    NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+# `npm rebuild` will run all those post-install scripts for us.
+- run: npm rebuild && npm run prepare --if-present
+```
+### Yarn2 configuration
+Yarn2 ignores both .npmrc and .yarnrc files created by the action, so before installing dependencies from the private repo it is necessary either to create or to modify existing yarnrc.yml file with `yarn config set` commands.
+
+Below you can find a sample "Setup .yarnrc.yml" step, that is going to allow you to configure a private GitHub registry for 'my-org' organisation.
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: '14.x'
+- name: Setup .yarnrc.yml
+  run: |
+    yarn config set npmScopes.my-org.npmRegistryServer "https://npm.pkg.github.com"
+    yarn config set npmScopes.my-org.npmAlwaysAuth true
+    yarn config set npmScopes.my-org.npmAuthToken $NPM_AUTH_TOKEN
+  env:
+    NPM_AUTH_TOKEN: ${{ secrets.YARN_TOKEN }}
+- name: Install dependencies
+  run: yarn install --immutable
+```
+NOTE: As per https://github.com/actions/setup-node/issues/49 you cannot use `secrets.GITHUB_TOKEN` to access private GitHub Packages within the same organisation but in a different repository.
+
+### always-auth input
+The always-auth input sets `always-auth=true` in .npmrc file. With this option set [npm](https://docs.npmjs.com/cli/v6/using-npm/config#always-auth)/yarn sends the authentication credentials when making a request to the registries.

docs/contributors.md

@@ -1,22 +1,115 @@
 # Contributors
 
-### Checkin
+Thank you for contributing!
 
-- Do checkin source (src)
-- Do checkin build output (lib)
-- Do checkin runtime node_modules
-- Do not checkin devDependency node_modules (husky can help see below)
+We have prepared a short guide so that the process of making your contribution is as simple and clear as possible. Please check it out before you contribute!
 
-### devDependencies
+## How can I contribute...
 
-In order to handle correctly checking in node_modules without devDependencies, we run [Husky](https://github.com/typicode/husky) before each commit.
-This step ensures that formatting and checkin rules are followed and that devDependencies are excluded. To make sure Husky runs correctly, please use the following workflow:
+* [Contribute Documentation:green_book:](#contribute-documentation)
 
-```
-npm install                                 # installs all devDependencies including Husky
-git add abc.ext                             # Add the files you've changed. This should include files in src, lib, and node_modules (see above)
-git commit -m "Informative commit message"  # Commit. This will run Husky
-```
+* [Contribute Code :computer:](#contribute-code)
 
-During the commit step, Husky will take care of formatting all files with [Prettier](https://github.com/prettier/prettier) as well as pruning out devDependencies using `npm prune --production`.
-It will also make sure these changes are appropriately included in your commit (no further work is needed)
+* [Provide Support on Issues:pencil:](#provide-support-on-issues)
+
+* [Review Pull Requests:mag:](#review-pull-requests)
+
+## Contribute documentation
+
+Documentation is a super important, critical part of this project. Docs are how we keep track of what we're doing, how, and why. It's how we stay on the same page about our policies and how we tell others everything they need to be able to use this project or contribute to it. 
+
+Documentation contributions of any size are welcome! Feel free to contribute even if you're just rewording a sentence to be more clear, or fixing a spelling mistake!
+
+**How to contribute:**
+
+Pull requests are the easiest way to contribute changes to git repos at GitHub. They are the preferred contribution method, as they offer a convenient way of commenting and amending the proposed changes.
+
+- Please check that no one else has already created a pull request with these or similar changes
+- Use a "feature branch" for your changes. That separates the changes in the pull request from your other changes and makes it easy to edit/amend commits in the pull request 
+- Make sure your changes are formatted properly and consistently with the rest of the documentation
+- Re-read what you wrote, and run a spellchecker on it to make sure you didn't miss anything
+- If your pull request is connected to an open issue, please, leave a link to this issue in the `Related issue:` section
+- If you later need to add new commits to the pull request, you can simply commit the changes to the local branch and then push them. The pull request gets automatically updated
+
+**Once you've filed the pull request:**
+
+- Maintainers will review your pull request
+- If a maintainer requests changes, first of all, try to think about this request critically and only after that implement and request another review
+- If your PR gets accepted, it will soon be merged into the main branch. But your contribution will take effect only after the release of a new version of the action and updating the major tag
+> Sometimes maintainers reject pull requests and that's ok! Usually, along with rejection, we supply the reason for it. Nonetheless, we still really appreciate you taking the time to do it, and we don't take that lightly :heart:
+
+## Contribute code
+
+We like code commits a lot! They're super handy, and they keep the project going and doing the work it needs to do to be useful to others.
+
+Code contributions of just about any size are acceptable!
+
+The main difference between code contributions and documentation contributions is that contributing code requires the inclusion of relevant tests for the code being added or changed. Contributions without accompanying tests will be held off until a test is added unless the maintainers consider the specific tests to be either impossible or way too much of a burden for such a contribution.
+
+**How to contribute:**
+
+Pull requests are the easiest way to contribute changes to git repos at GitHub. They are the preferred contribution method, as they offer a convenient way of commenting and amending the proposed changes.
+
+- Please check that no one else has already created a pull request with these or similar changes
+- Use a "feature branch" for your changes. That separates the changes in the pull request from your other changes and makes it easy to edit/amend commits in the pull request
+-  **Run `pre-checkin` script to format, build and test changes**
+- Make sure your changes are well formatted and that all tests are passing
+- If your pull request is connected to an open issue, please, leave a link to this issue in the `Related issue:` section
+- If you later need to add new commits to the pull request, you can simply commit the changes to the local branch and then push them. The pull request gets automatically updated
+
+**Learn more about how to work with the repository:**
+
+- To implement new features or fix bugs, you need to make changes to the `.ts` files, which are located in the `src` folder
+- To comply with the code style, **you need to run the `format` script**
+- To transpile source code to `javascript` we use [NCC](https://github.com/vercel/ncc). **It is very important to run the `build` script after making changes**, otherwise your changes will not get into the final `javascript` build
+- You can also start formatting, building code, and testing with a single `pre-checkin` command
+
+**Learn more about how to implement tests:**
+
+Adding or changing tests is an integral part of making a change to the code. 
+Unit tests are in the `__tests__` folder, and end-to-end tests are in the `workflows` folder, particularly in the [versions.yml](https://github.com/actions/setup-node/blob/main/.github/workflows/versions.yml) and [e2e-cache.yml](https://github.com/actions/setup-node/blob/main/.github/workflows/e2e-cache.yml) files.
+
+- The contributor can add various types of tests (like unit tests or end-to-end tests), which, in his opinion, will be necessary and sufficient for testing new or changed functionality
+- Tests should cover a successful execution, as well as some edge cases and possible errors
+- As already mentioned, pull requests without tests will be considered more carefully by maintainers. If you are sure that in this situation the tests are not needed or cannot be implemented with a commensurate effort - please add this clarification message to your pull request
+
+**Once you've filed the pull request:**
+
+- CI will start automatically with some checks. Wait until the end of the execution and make sure that all checks passed successfully. If some checks fail, you can open them one by one, try to find the reason for failing and make changes to your code to resolve the problem
+- Maintainers will review your pull request
+- If a maintainer requests changes, first of all, try to think about his request critically and only after that implement and request another review
+- If your PR gets accepted, it will soon be merged into the main branch. But your contribution will take effect only after the release of a new version of the action and updating the major tag
+> Sometimes maintainers reject pull requests and that's ok! Usually, along with rejection, we supply the reason for it. Nonetheless, we still really appreciate you taking the time to do it, and we don't take that lightly :heart:
+
+## Provide support on issues
+
+Helping out other users with their questions is an awesome way of contributing to any community. It's not uncommon for most of the issues on open source projects to be support-related questions by users trying to understand something they ran into or find their way around a known bug.
+
+**To help other folks out with their questions:**
+
+- Go to the [issue tracker](https://github.com/actions/setup-node/issues)
+- Read through the list until you find something that you're familiar enough with to answer to
+- Respond to the issue with whatever details are needed to clarify the question, or get more details about what's going on
+- Once the discussion wraps up and things are clarified, ask the original issue filer (or a maintainer) to close it for you
+ 
+*Some notes on picking up support issues:*
+
+- Avoid responding to issues you don't know you can answer accurately
+- Try to refer to past issues with accepted answers as much as possible. Link to them from your replies
+- Be kind and patient with users. Often, folks who have run into confusing things might be upset or impatient. This is natural. If you feel uncomfortable in conversation with them, it's better to stay away or withdraw from the issue.
+
+ > If some user is violating our code of conduct [standards](https://github.com/actions/setup-node/blob/main/CODE_OF_CONDUCT.md#our-standards), refer to the [Enforcement](https://github.com/actions/setup-node/blob/main/CODE_OF_CONDUCT.md#enforcement) section of the Code of Conduct to resolve the conflict
+ 
+
+## Review pull requests
+ 
+
+Another great way to contribute is to review pull request. Please, be extra kind: people who submit code/doc contributions are putting themselves in a pretty vulnerable position, and have put time and care into what they've done (even if that's not obvious to you!) Please, always respond with respect, and be understanding, but don't feel like you need to sacrifice your standards for their sake, either.
+ 
+**How to review:**
+
+- Go to the [pull requests](https://github.com/actions/setup-node/pulls)
+- Make sure you're familiar with the code or documentation is updated, unless it's a minor change (spellchecking, minor formatting, etc.)
+- Review changes using the GitHub functionality. You can ask a clarifying question, point out an error or suggest an alternative. 
+> Note: You may ask for minor changes - "nitpicks", but consider whether they are real blockers to merging or not
+- Submit your review, which may include comments, an approval, or a changes request

package.json

@@ -1,14 +1,14 @@
 {
   "name": "setup-node",
-  "version": "1.0.0",
+  "version": "3.4.1",
   "private": true,
   "description": "setup node action",
   "main": "lib/setup-node.js",
   "scripts": {
-    "build": "tsc && ncc build",
+    "build": "ncc build -o dist/setup src/setup-node.ts && ncc build -o dist/cache-save src/cache-save.ts",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
-    "test": "jest",
+    "test": "jest --coverage",
     "pre-checkin": "npm run format && npm run build && npm test"
   },
   "repository": {
@@ -23,22 +23,25 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.2",
+    "@actions/cache": "^3.0.4",
+    "@actions/core": "^1.10.0",
+    "@actions/exec": "^1.1.0",
     "@actions/github": "^1.1.0",
-    "@actions/http-client": "^1.0.6",
+    "@actions/glob": "^0.2.0",
+    "@actions/http-client": "^1.0.11",
     "@actions/io": "^1.0.2",
-    "@actions/tool-cache": "^1.3.3",
+    "@actions/tool-cache": "^1.5.4",
     "semver": "^6.1.1"
   },
   "devDependencies": {
-    "@types/jest": "^24.0.13",
-    "@types/node": "^12.0.4",
+    "@types/jest": "^27.0.2",
+    "@types/node": "^16.11.25",
     "@types/semver": "^6.0.0",
-    "@zeit/ncc": "^0.21.0",
-    "jest": "^24.8.0",
-    "jest-circus": "^24.7.1",
-    "prettier": "^1.17.1",
-    "ts-jest": "^24.0.2",
-    "typescript": "^3.5.1"
+    "@vercel/ncc": "^0.33.4",
+    "jest": "^27.2.5",
+    "jest-circus": "^27.2.5",
+    "prettier": "^1.19.1",
+    "ts-jest": "^27.0.5",
+    "typescript": "^3.8.3"
   }
 }

src/authutil.ts

@@ -53,6 +53,9 @@ function writeRegistryToFile(
   newContents += `${authString}${os.EOL}${registryString}${os.EOL}${alwaysAuthString}`;
   fs.writeFileSync(fileLocation, newContents);
   core.exportVariable('NPM_CONFIG_USERCONFIG', fileLocation);
-  // Export empty node_auth_token so npm doesn't complain about not being able to find it
-  core.exportVariable('NODE_AUTH_TOKEN', 'XXXXX-XXXXX-XXXXX-XXXXX');
+  // Export empty node_auth_token if didn't exist so npm doesn't complain about not being able to find it
+  core.exportVariable(
+    'NODE_AUTH_TOKEN',
+    process.env.NODE_AUTH_TOKEN || 'XXXXX-XXXXX-XXXXX-XXXXX'
+  );
 }

src/cache-restore.ts

@@ -0,0 +1,69 @@
+import * as cache from '@actions/cache';
+import * as core from '@actions/core';
+import * as glob from '@actions/glob';
+import path from 'path';
+import fs from 'fs';
+
+import {State, Outputs} from './constants';
+import {
+  getCacheDirectoryPath,
+  getPackageManagerInfo,
+  PackageManagerInfo
+} from './cache-utils';
+
+export const restoreCache = async (
+  packageManager: string,
+  cacheDependencyPath?: string
+) => {
+  const packageManagerInfo = await getPackageManagerInfo(packageManager);
+  if (!packageManagerInfo) {
+    throw new Error(`Caching for '${packageManager}' is not supported`);
+  }
+  const platform = process.env.RUNNER_OS;
+
+  const cachePath = await getCacheDirectoryPath(
+    packageManagerInfo,
+    packageManager
+  );
+  const lockFilePath = cacheDependencyPath
+    ? cacheDependencyPath
+    : findLockFile(packageManagerInfo);
+  const fileHash = await glob.hashFiles(lockFilePath);
+
+  if (!fileHash) {
+    throw new Error(
+      'Some specified paths were not resolved, unable to cache dependencies.'
+    );
+  }
+
+  const primaryKey = `node-cache-${platform}-${packageManager}-${fileHash}`;
+  core.debug(`primary key is ${primaryKey}`);
+
+  core.saveState(State.CachePrimaryKey, primaryKey);
+
+  const cacheKey = await cache.restoreCache([cachePath], primaryKey);
+  core.setOutput('cache-hit', Boolean(cacheKey));
+
+  if (!cacheKey) {
+    core.info(`${packageManager} cache is not found`);
+    return;
+  }
+
+  core.saveState(State.CacheMatchedKey, cacheKey);
+  core.info(`Cache restored from key: ${cacheKey}`);
+};
+
+const findLockFile = (packageManager: PackageManagerInfo) => {
+  let lockFiles = packageManager.lockFilePatterns;
+  const workspace = process.env.GITHUB_WORKSPACE!;
+  const rootContent = fs.readdirSync(workspace);
+
+  const lockFile = lockFiles.find(item => rootContent.includes(item));
+  if (!lockFile) {
+    throw new Error(
+      `Dependencies lock file is not found in ${workspace}. Supported file patterns: ${lockFiles.toString()}`
+    );
+  }
+
+  return path.join(workspace, lockFile);
+};

src/cache-save.ts

@@ -0,0 +1,60 @@
+import * as core from '@actions/core';
+import * as cache from '@actions/cache';
+import fs from 'fs';
+import {State} from './constants';
+import {getCacheDirectoryPath, getPackageManagerInfo} from './cache-utils';
+
+// Catch and log any unhandled exceptions.  These exceptions can leak out of the uploadChunk method in
+// @actions/toolkit when a failed upload closes the file descriptor causing any in-process reads to
+// throw an uncaught exception.  Instead of failing this action, just warn.
+process.on('uncaughtException', e => {
+  const warningPrefix = '[warning]';
+  core.info(`${warningPrefix}${e.message}`);
+});
+
+export async function run() {
+  try {
+    const cacheLock = core.getInput('cache');
+    await cachePackages(cacheLock);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+const cachePackages = async (packageManager: string) => {
+  const state = core.getState(State.CacheMatchedKey);
+  const primaryKey = core.getState(State.CachePrimaryKey);
+
+  const packageManagerInfo = await getPackageManagerInfo(packageManager);
+  if (!packageManagerInfo) {
+    core.debug(`Caching for '${packageManager}' is not supported`);
+    return;
+  }
+
+  const cachePath = await getCacheDirectoryPath(
+    packageManagerInfo,
+    packageManager
+  );
+
+  if (!fs.existsSync(cachePath)) {
+    throw new Error(
+      `Cache folder path is retrieved for ${packageManager} but doesn't exist on disk: ${cachePath}`
+    );
+  }
+
+  if (primaryKey === state) {
+    core.info(
+      `Cache hit occurred on the primary key ${primaryKey}, not saving cache.`
+    );
+    return;
+  }
+
+  const cacheId = await cache.saveCache([cachePath], primaryKey);
+  if (cacheId == -1) {
+    return;
+  }
+
+  core.info(`Cache saved with the key: ${primaryKey}`);
+};
+
+run();

src/cache-utils.ts

@@ -0,0 +1,123 @@
+import * as core from '@actions/core';
+import * as exec from '@actions/exec';
+import * as cache from '@actions/cache';
+
+type SupportedPackageManagers = {
+  [prop: string]: PackageManagerInfo;
+};
+
+export interface PackageManagerInfo {
+  lockFilePatterns: Array<string>;
+  getCacheFolderCommand: string;
+}
+
+export const supportedPackageManagers: SupportedPackageManagers = {
+  npm: {
+    lockFilePatterns: ['package-lock.json', 'npm-shrinkwrap.json', 'yarn.lock'],
+    getCacheFolderCommand: 'npm config get cache'
+  },
+  pnpm: {
+    lockFilePatterns: ['pnpm-lock.yaml'],
+    getCacheFolderCommand: 'pnpm store path --silent'
+  },
+  yarn1: {
+    lockFilePatterns: ['yarn.lock'],
+    getCacheFolderCommand: 'yarn cache dir'
+  },
+  yarn2: {
+    lockFilePatterns: ['yarn.lock'],
+    getCacheFolderCommand: 'yarn config get cacheFolder'
+  }
+};
+
+export const getCommandOutput = async (toolCommand: string) => {
+  let {stdout, stderr, exitCode} = await exec.getExecOutput(
+    toolCommand,
+    undefined,
+    {ignoreReturnCode: true}
+  );
+
+  if (exitCode) {
+    stderr = !stderr.trim()
+      ? `The '${toolCommand}' command failed with exit code: ${exitCode}`
+      : stderr;
+    throw new Error(stderr);
+  }
+
+  return stdout.trim();
+};
+
+const getPackageManagerVersion = async (
+  packageManager: string,
+  command: string
+) => {
+  const stdOut = await getCommandOutput(`${packageManager} ${command}`);
+
+  if (!stdOut) {
+    throw new Error(`Could not retrieve version of ${packageManager}`);
+  }
+
+  return stdOut;
+};
+
+export const getPackageManagerInfo = async (packageManager: string) => {
+  if (packageManager === 'npm') {
+    return supportedPackageManagers.npm;
+  } else if (packageManager === 'pnpm') {
+    return supportedPackageManagers.pnpm;
+  } else if (packageManager === 'yarn') {
+    const yarnVersion = await getPackageManagerVersion('yarn', '--version');
+
+    core.debug(`Consumed yarn version is ${yarnVersion}`);
+
+    if (yarnVersion.startsWith('1.')) {
+      return supportedPackageManagers.yarn1;
+    } else {
+      return supportedPackageManagers.yarn2;
+    }
+  } else {
+    return null;
+  }
+};
+
+export const getCacheDirectoryPath = async (
+  packageManagerInfo: PackageManagerInfo,
+  packageManager: string
+) => {
+  const stdOut = await getCommandOutput(
+    packageManagerInfo.getCacheFolderCommand
+  );
+
+  if (!stdOut) {
+    throw new Error(`Could not get cache folder path for ${packageManager}`);
+  }
+
+  core.debug(`${packageManager} path is ${stdOut}`);
+
+  return stdOut.trim();
+};
+
+export function isGhes(): boolean {
+  const ghUrl = new URL(
+    process.env['GITHUB_SERVER_URL'] || 'https://github.com'
+  );
+  return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';
+}
+
+export function isCacheFeatureAvailable(): boolean {
+  if (!cache.isFeatureAvailable()) {
+    if (isGhes()) {
+      throw new Error(
+        'Cache action is only supported on GHES version >= 3.5. If you are on version >=3.5 Please check with GHES admin if Actions cache service is enabled or not.'
+      );
+    } else {
+      core.warning(
+        'The runner was not able to contact the cache service. Caching will be skipped'
+      );
+    }
+
+    return false;
+  }
+
+  return true;
+}

src/constants.ts

@@ -0,0 +1,14 @@
+export enum LockType {
+  Npm = 'npm',
+  Pnpm = 'pnpm',
+  Yarn = 'yarn'
+}
+
+export enum State {
+  CachePrimaryKey = 'CACHE_KEY',
+  CacheMatchedKey = 'CACHE_RESULT'
+}
+
+export enum Outputs {
+  CacheHit = 'cache-hit'
+}

src/installer.ts

@@ -1,54 +1,188 @@
+import os = require('os');
 import * as assert from 'assert';
 import * as core from '@actions/core';
 import * as hc from '@actions/http-client';
 import * as io from '@actions/io';
 import * as tc from '@actions/tool-cache';
-import * as os from 'os';
 import * as path from 'path';
 import * as semver from 'semver';
-
-let osPlat: string = os.platform();
-let osArch: string = translateArchToDistUrl(os.arch());
+import fs = require('fs');
 
 //
 // Node versions interface
 // see https://nodejs.org/dist/index.json
 //
-interface INodeVersion {
+export interface INodeVersion {
   version: string;
   files: string[];
 }
 
-export async function getNode(versionSpec: string) {
+interface INodeVersionInfo {
+  downloadUrl: string;
+  resolvedVersion: string;
+  arch: string;
+  fileName: string;
+}
+
+interface INodeRelease extends tc.IToolRelease {
+  lts?: string;
+}
+
+export async function getNode(
+  versionSpec: string,
+  stable: boolean,
+  checkLatest: boolean,
+  auth: string | undefined,
+  arch: string = os.arch()
+) {
+  // Store manifest data to avoid multiple calls
+  let manifest: INodeRelease[] | undefined;
+  let nodeVersions: INodeVersion[] | undefined;
+  let osPlat: string = os.platform();
+  let osArch: string = translateArchToDistUrl(arch);
+
+  if (isLtsAlias(versionSpec)) {
+    core.info('Attempt to resolve LTS alias from manifest...');
+
+    // No try-catch since it's not possible to resolve LTS alias without manifest
+    manifest = await getManifest(auth);
+
+    versionSpec = resolveLtsAliasFromManifest(versionSpec, stable, manifest);
+  }
+
+  if (isLatestSyntax(versionSpec)) {
+    nodeVersions = await getVersionsFromDist();
+    versionSpec = await queryDistForMatch(versionSpec, arch, nodeVersions);
+    core.info(`getting latest node version...`);
+  }
+
+  if (checkLatest) {
+    core.info('Attempt to resolve the latest version from manifest...');
+    const resolvedVersion = await resolveVersionFromManifest(
+      versionSpec,
+      stable,
+      auth,
+      osArch,
+      manifest
+    );
+    if (resolvedVersion) {
+      versionSpec = resolvedVersion;
+      core.info(`Resolved as '${versionSpec}'`);
+    } else {
+      core.info(`Failed to resolve version ${versionSpec} from manifest`);
+    }
+  }
+
   // check cache
   let toolPath: string;
-  toolPath = tc.find('node', versionSpec);
+  toolPath = tc.find('node', versionSpec, osArch);
 
   // If not found in cache, download
-  if (!toolPath) {
-    let version: string;
-    const c = semver.clean(versionSpec) || '';
-    // If explicit version
-    if (semver.valid(c) != null) {
-      // version to download
-      version = versionSpec;
-    } else {
-      // query nodejs.org for a matching version
-      version = await queryLatestMatch(versionSpec);
-      if (!version) {
+  if (toolPath) {
+    core.info(`Found in cache @ ${toolPath}`);
+  } else {
+    core.info(`Attempting to download ${versionSpec}...`);
+    let downloadPath = '';
+    let info: INodeVersionInfo | null = null;
+
+    //
+    // Try download from internal distribution (popular versions only)
+    //
+    try {
+      info = await getInfoFromManifest(
+        versionSpec,
+        stable,
+        auth,
+        osArch,
+        manifest
+      );
+      if (info) {
+        core.info(
+          `Acquiring ${info.resolvedVersion} - ${info.arch} from ${info.downloadUrl}`
+        );
+        downloadPath = await tc.downloadTool(info.downloadUrl, undefined, auth);
+      } else {
+        core.info(
+          'Not found in manifest.  Falling back to download directly from Node'
+        );
+      }
+    } catch (err) {
+      // Rate limit?
+      if (
+        err instanceof tc.HTTPError &&
+        (err.httpStatusCode === 403 || err.httpStatusCode === 429)
+      ) {
+        core.info(
+          `Received HTTP status code ${err.httpStatusCode}.  This usually indicates the rate limit has been exceeded`
+        );
+      } else {
+        core.info(err.message);
+      }
+      core.debug(err.stack);
+      core.info('Falling back to download directly from Node');
+    }
+
+    //
+    // Download from nodejs.org
+    //
+    if (!downloadPath) {
+      info = await getInfoFromDist(versionSpec, arch, nodeVersions);
+      if (!info) {
         throw new Error(
           `Unable to find Node version '${versionSpec}' for platform ${osPlat} and architecture ${osArch}.`
         );
       }
 
-      // check cache
-      toolPath = tc.find('node', version);
+      core.info(
+        `Acquiring ${info.resolvedVersion} - ${info.arch} from ${info.downloadUrl}`
+      );
+      try {
+        downloadPath = await tc.downloadTool(info.downloadUrl);
+      } catch (err) {
+        if (err instanceof tc.HTTPError && err.httpStatusCode == 404) {
+          return await acquireNodeFromFallbackLocation(
+            info.resolvedVersion,
+            info.arch
+          );
+        }
+
+        throw err;
+      }
     }
 
-    if (!toolPath) {
-      // download, extract, cache
-      toolPath = await acquireNode(version);
+    //
+    // Extract
+    //
+    core.info('Extracting ...');
+    let extPath: string;
+    info = info || ({} as INodeVersionInfo); // satisfy compiler, never null when reaches here
+    if (osPlat == 'win32') {
+      let _7zPath = path.join(__dirname, '../..', 'externals', '7zr.exe');
+      extPath = await tc.extract7z(downloadPath, undefined, _7zPath);
+      // 7z extracts to folder matching file name
+      let nestedPath = path.join(extPath, path.basename(info.fileName, '.7z'));
+      if (fs.existsSync(nestedPath)) {
+        extPath = nestedPath;
+      }
+    } else {
+      extPath = await tc.extractTar(downloadPath, undefined, [
+        'xz',
+        '--strip',
+        '1'
+      ]);
     }
+
+    //
+    // Install into the local tool cache - node extracts with a root folder that matches the fileName downloaded
+    //
+    core.info('Adding to the cache ...');
+    toolPath = await tc.cacheDir(
+      extPath,
+      'node',
+      info.resolvedVersion,
+      info.arch
+    );
+    core.info('Done');
   }
 
   //
@@ -65,41 +199,143 @@ export async function getNode(versionSpec: string) {
   core.addPath(toolPath);
 }
 
-async function queryLatestMatch(versionSpec: string): Promise<string> {
-  // node offers a json list of versions
-  let dataFileName: string;
-  switch (osPlat) {
-    case 'linux':
-      dataFileName = `linux-${osArch}`;
-      break;
-    case 'darwin':
-      dataFileName = `osx-${osArch}-tar`;
-      break;
-    case 'win32':
-      dataFileName = `win-${osArch}-exe`;
-      break;
-    default:
-      throw new Error(`Unexpected OS '${osPlat}'`);
+function isLtsAlias(versionSpec: string): boolean {
+  return versionSpec.startsWith('lts/');
+}
+
+function getManifest(auth: string | undefined): Promise<tc.IToolRelease[]> {
+  core.debug('Getting manifest from actions/node-versions@main');
+  return tc.getManifestFromRepo('actions', 'node-versions', auth, 'main');
+}
+
+function resolveLtsAliasFromManifest(
+  versionSpec: string,
+  stable: boolean,
+  manifest: INodeRelease[]
+): string {
+  const alias = versionSpec.split('lts/')[1]?.toLowerCase();
+
+  if (!alias) {
+    throw new Error(
+      `Unable to parse LTS alias for Node version '${versionSpec}'`
+    );
   }
 
-  let versions: string[] = [];
-  let dataUrl = 'https://nodejs.org/dist/index.json';
-  let httpClient = new hc.HttpClient('setup-node', [], {
-    allowRetries: true,
-    maxRetries: 3
-  });
-  let response = await httpClient.getJson<INodeVersion[]>(dataUrl);
-  let nodeVersions = response.result || [];
-  nodeVersions.forEach((nodeVersion: INodeVersion) => {
-    // ensure this version supports your os and platform
-    if (nodeVersion.files.indexOf(dataFileName) >= 0) {
-      versions.push(nodeVersion.version);
-    }
-  });
+  core.debug(`LTS alias '${alias}' for Node version '${versionSpec}'`);
 
-  // get the latest version that matches the version spec
-  let version: string = evaluateVersions(versions, versionSpec);
-  return version;
+  // Supported formats are `lts/<alias>`, `lts/*`, and `lts/-n`. Where asterisk means highest possible LTS and -n means the nth-highest.
+  const n = Number(alias);
+  const aliases = Object.fromEntries(
+    manifest
+      .filter(x => x.lts && x.stable === stable)
+      .map(x => [x.lts!.toLowerCase(), x])
+      .reverse()
+  );
+  const numbered = Object.values(aliases);
+  const release =
+    alias === '*'
+      ? numbered[numbered.length - 1]
+      : n < 0
+      ? numbered[numbered.length - 1 + n]
+      : aliases[alias];
+
+  if (!release) {
+    throw new Error(
+      `Unable to find LTS release '${alias}' for Node version '${versionSpec}'.`
+    );
+  }
+
+  core.debug(
+    `Found LTS release '${release.version}' for Node version '${versionSpec}'`
+  );
+
+  return release.version.split('.')[0];
+}
+
+async function getInfoFromManifest(
+  versionSpec: string,
+  stable: boolean,
+  auth: string | undefined,
+  osArch: string = translateArchToDistUrl(os.arch()),
+  manifest: tc.IToolRelease[] | undefined
+): Promise<INodeVersionInfo | null> {
+  let info: INodeVersionInfo | null = null;
+  if (!manifest) {
+    core.debug('No manifest cached');
+    manifest = await getManifest(auth);
+  }
+
+  const rel = await tc.findFromManifest(versionSpec, stable, manifest, osArch);
+
+  if (rel && rel.files.length > 0) {
+    info = <INodeVersionInfo>{};
+    info.resolvedVersion = rel.version;
+    info.arch = rel.files[0].arch;
+    info.downloadUrl = rel.files[0].download_url;
+    info.fileName = rel.files[0].filename;
+  }
+
+  return info;
+}
+
+async function getInfoFromDist(
+  versionSpec: string,
+  arch: string = os.arch(),
+  nodeVersions?: INodeVersion[]
+): Promise<INodeVersionInfo | null> {
+  let osPlat: string = os.platform();
+  let osArch: string = translateArchToDistUrl(arch);
+
+  let version: string = await queryDistForMatch(
+    versionSpec,
+    arch,
+    nodeVersions
+  );
+
+  if (!version) {
+    return null;
+  }
+
+  //
+  // Download - a tool installer intimately knows how to get the tool (and construct urls)
+  //
+  version = semver.clean(version) || '';
+  let fileName: string =
+    osPlat == 'win32'
+      ? `node-v${version}-win-${osArch}`
+      : `node-v${version}-${osPlat}-${osArch}`;
+  let urlFileName: string =
+    osPlat == 'win32' ? `${fileName}.7z` : `${fileName}.tar.gz`;
+  let url = `https://nodejs.org/dist/v${version}/${urlFileName}`;
+
+  return <INodeVersionInfo>{
+    downloadUrl: url,
+    resolvedVersion: version,
+    arch: arch,
+    fileName: fileName
+  };
+}
+
+async function resolveVersionFromManifest(
+  versionSpec: string,
+  stable: boolean,
+  auth: string | undefined,
+  osArch: string = translateArchToDistUrl(os.arch()),
+  manifest: tc.IToolRelease[] | undefined
+): Promise<string | undefined> {
+  try {
+    const info = await getInfoFromManifest(
+      versionSpec,
+      stable,
+      auth,
+      osArch,
+      manifest
+    );
+    return info?.resolvedVersion;
+  } catch (err) {
+    core.info('Unable to resolve version from manifest...');
+    core.debug(err.message);
+  }
 }
 
 // TODO - should we just export this from @actions/tool-cache? Lifted directly from there
@@ -130,47 +366,62 @@ function evaluateVersions(versions: string[], versionSpec: string): string {
   return version;
 }
 
-async function acquireNode(version: string): Promise<string> {
-  //
-  // Download - a tool installer intimately knows how to get the tool (and construct urls)
-  //
-  version = semver.clean(version) || '';
-  let fileName: string =
-    osPlat == 'win32'
-      ? `node-v${version}-win-${osArch}`
-      : `node-v${version}-${osPlat}-${osArch}`;
-  let urlFileName: string =
-    osPlat == 'win32' ? `${fileName}.7z` : `${fileName}.tar.gz`;
-  let downloadUrl = `https://nodejs.org/dist/v${version}/${urlFileName}`;
+async function queryDistForMatch(
+  versionSpec: string,
+  arch: string = os.arch(),
+  nodeVersions?: INodeVersion[]
+): Promise<string> {
+  let osPlat: string = os.platform();
+  let osArch: string = translateArchToDistUrl(arch);
 
-  let downloadPath: string;
+  // node offers a json list of versions
+  let dataFileName: string;
+  switch (osPlat) {
+    case 'linux':
+      dataFileName = `linux-${osArch}`;
+      break;
+    case 'darwin':
+      dataFileName = `osx-${osArch}-tar`;
+      break;
+    case 'win32':
+      dataFileName = `win-${osArch}-exe`;
+      break;
+    default:
+      throw new Error(`Unexpected OS '${osPlat}'`);
+  }
 
-  try {
-    downloadPath = await tc.downloadTool(downloadUrl);
-  } catch (err) {
-    if (err instanceof tc.HTTPError && err.httpStatusCode == 404) {
-      return await acquireNodeFromFallbackLocation(version);
+  if (!nodeVersions) {
+    core.debug('No dist manifest cached');
+    nodeVersions = await getVersionsFromDist();
+  }
+
+  let versions: string[] = [];
+
+  if (isLatestSyntax(versionSpec)) {
+    core.info(`getting latest node version...`);
+    return nodeVersions[0].version;
+  }
+
+  nodeVersions.forEach((nodeVersion: INodeVersion) => {
+    // ensure this version supports your os and platform
+    if (nodeVersion.files.indexOf(dataFileName) >= 0) {
+      versions.push(nodeVersion.version);
     }
+  });
 
-    throw err;
-  }
+  // get the latest version that matches the version spec
+  let version: string = evaluateVersions(versions, versionSpec);
+  return version;
+}
 
-  //
-  // Extract
-  //
-  let extPath: string;
-  if (osPlat == 'win32') {
-    let _7zPath = path.join(__dirname, '..', 'externals', '7zr.exe');
-    extPath = await tc.extract7z(downloadPath, undefined, _7zPath);
-  } else {
-    extPath = await tc.extractTar(downloadPath);
-  }
-
-  //
-  // Install into the local tool cache - node extracts with a root folder that matches the fileName downloaded
-  //
-  let toolRoot = path.join(extPath, fileName);
-  return await tc.cacheDir(toolRoot, 'node', version);
+export async function getVersionsFromDist(): Promise<INodeVersion[]> {
+  let dataUrl = 'https://nodejs.org/dist/index.json';
+  let httpClient = new hc.HttpClient('setup-node', [], {
+    allowRetries: true,
+    maxRetries: 3
+  });
+  let response = await httpClient.getJson<INodeVersion[]>(dataUrl);
+  return response.result || [];
 }
 
 // For non LTS versions of Node, the files we need (for Windows) are sometimes located
@@ -186,8 +437,12 @@ async function acquireNode(version: string): Promise<string> {
 // Note also that the files are normally zipped but in this case they are just an exe
 // and lib file in a folder, not zipped.
 async function acquireNodeFromFallbackLocation(
-  version: string
+  version: string,
+  arch: string = os.arch()
 ): Promise<string> {
+  let osPlat: string = os.platform();
+  let osArch: string = translateArchToDistUrl(arch);
+
   // Create temporary folder to download in to
   const tempDownloadFolder: string =
     'temp_' + Math.floor(Math.random() * 2000000000);
@@ -201,6 +456,8 @@ async function acquireNodeFromFallbackLocation(
     exeUrl = `https://nodejs.org/dist/v${version}/win-${osArch}/node.exe`;
     libUrl = `https://nodejs.org/dist/v${version}/win-${osArch}/node.lib`;
 
+    core.info(`Downloading only node binary from ${exeUrl}`);
+
     const exePath = await tc.downloadTool(exeUrl);
     await io.cp(exePath, path.join(tempDir, 'node.exe'));
     const libPath = await tc.downloadTool(libUrl);
@@ -218,7 +475,9 @@ async function acquireNodeFromFallbackLocation(
       throw err;
     }
   }
-  return await tc.cacheDir(tempDir, 'node', version);
+  let toolPath = await tc.cacheDir(tempDir, 'node', version, arch);
+  core.addPath(toolPath);
+  return toolPath;
 }
 
 // os.arch does not always match the relative download url, e.g.
@@ -234,3 +493,30 @@ function translateArchToDistUrl(arch: string): string {
       return arch;
   }
 }
+
+export function parseNodeVersionFile(contents: string): string {
+  let nodeVersion: string | undefined;
+
+  // Try parsing the file as an NPM `package.json` file.
+  try {
+    nodeVersion = JSON.parse(contents).volta?.node;
+    if (!nodeVersion) nodeVersion = JSON.parse(contents).engines?.node;
+  } catch {
+    core.info('Node version file is not JSON file');
+  }
+
+  if (!nodeVersion) {
+    const found = contents.match(/^(?:nodejs\s+)?v?(?<version>[^\s]+)$/m);
+    nodeVersion = found?.groups?.version;
+  }
+
+  // In the case of an unknown format,
+  // return as is and evaluate the version separately.
+  if (!nodeVersion) nodeVersion = contents.trim();
+
+  return nodeVersion as string;
+}
+
+function isLatestSyntax(versionSpec): boolean {
+  return ['current', 'latest', 'node'].includes(versionSpec);
+}

src/main.ts

@@ -0,0 +1,139 @@
+import * as core from '@actions/core';
+import * as exec from '@actions/exec';
+import * as installer from './installer';
+import fs from 'fs';
+import * as auth from './authutil';
+import * as path from 'path';
+import {restoreCache} from './cache-restore';
+import {isGhes, isCacheFeatureAvailable} from './cache-utils';
+import os = require('os');
+
+export async function run() {
+  try {
+    //
+    // Version is optional.  If supplied, install / use from the tool cache
+    // If not supplied then task is still used to setup proxy, auth, etc...
+    //
+    let version = resolveVersionInput();
+
+    let arch = core.getInput('architecture');
+    const cache = core.getInput('cache');
+
+    // if architecture supplied but node-version is not
+    // if we don't throw a warning, the already installed x64 node will be used which is not probably what user meant.
+    if (arch && !version) {
+      core.warning(
+        '`architecture` is provided but `node-version` is missing. In this configuration, the version/architecture of Node will not be changed. To fix this, provide `architecture` in combination with `node-version`'
+      );
+    }
+
+    if (!arch) {
+      arch = os.arch();
+    }
+
+    if (version) {
+      let token = core.getInput('token');
+      let auth = !token || isGhes() ? undefined : `token ${token}`;
+      let stable = (core.getInput('stable') || 'true').toUpperCase() === 'TRUE';
+      const checkLatest =
+        (core.getInput('check-latest') || 'false').toUpperCase() === 'TRUE';
+      await installer.getNode(version, stable, checkLatest, auth, arch);
+    }
+
+    await printEnvDetailsAndSetOutput();
+
+    const registryUrl: string = core.getInput('registry-url');
+    const alwaysAuth: string = core.getInput('always-auth');
+    if (registryUrl) {
+      auth.configAuthentication(registryUrl, alwaysAuth);
+    }
+
+    if (cache && isCacheFeatureAvailable()) {
+      const cacheDependencyPath = core.getInput('cache-dependency-path');
+      await restoreCache(cache, cacheDependencyPath);
+    }
+
+    const matchersPath = path.join(__dirname, '../..', '.github');
+    core.info(`##[add-matcher]${path.join(matchersPath, 'tsc.json')}`);
+    core.info(
+      `##[add-matcher]${path.join(matchersPath, 'eslint-stylish.json')}`
+    );
+    core.info(
+      `##[add-matcher]${path.join(matchersPath, 'eslint-compact.json')}`
+    );
+  } catch (err) {
+    core.setFailed(err.message);
+  }
+}
+
+function resolveVersionInput(): string {
+  let version = core.getInput('node-version');
+  const versionFileInput = core.getInput('node-version-file');
+
+  if (version && versionFileInput) {
+    core.warning(
+      'Both node-version and node-version-file inputs are specified, only node-version will be used'
+    );
+  }
+
+  if (version) {
+    return version;
+  }
+
+  if (versionFileInput) {
+    const versionFilePath = path.join(
+      process.env.GITHUB_WORKSPACE!,
+      versionFileInput
+    );
+
+    if (!fs.existsSync(versionFilePath)) {
+      throw new Error(
+        `The specified node version file at: ${versionFilePath} does not exist`
+      );
+    }
+
+    version = installer.parseNodeVersionFile(
+      fs.readFileSync(versionFilePath, 'utf8')
+    );
+
+    core.info(`Resolved ${versionFileInput} as ${version}`);
+  }
+
+  return version;
+}
+
+export async function printEnvDetailsAndSetOutput() {
+  core.startGroup('Environment details');
+
+  const promises = ['node', 'npm', 'yarn'].map(async tool => {
+    const output = await getToolVersion(tool, ['--version']);
+
+    if (tool === 'node') {
+      core.setOutput(`${tool}-version`, output);
+    }
+
+    core.info(`${tool}: ${output}`);
+  });
+
+  await Promise.all(promises);
+
+  core.endGroup();
+}
+
+async function getToolVersion(tool: string, options: string[]) {
+  try {
+    const {stdout, stderr, exitCode} = await exec.getExecOutput(tool, options, {
+      ignoreReturnCode: true,
+      silent: true
+    });
+
+    if (exitCode > 0) {
+      core.warning(`[warning]${stderr}`);
+      return '';
+    }
+
+    return stdout;
+  } catch (err) {
+    return '';
+  }
+}

src/setup-node.ts

@@ -1,39 +1,3 @@
-import * as core from '@actions/core';
-import * as installer from './installer';
-import * as auth from './authutil';
-import * as path from 'path';
-
-async function run() {
-  try {
-    //
-    // Version is optional.  If supplied, install / use from the tool cache
-    // If not supplied then task is still used to setup proxy, auth, etc...
-    //
-    let version = core.getInput('version');
-    if (!version) {
-      version = core.getInput('node-version');
-    }
-    if (version) {
-      await installer.getNode(version);
-    }
-
-    const registryUrl: string = core.getInput('registry-url');
-    const alwaysAuth: string = core.getInput('always-auth');
-    if (registryUrl) {
-      auth.configAuthentication(registryUrl, alwaysAuth);
-    }
-
-    const matchersPath = path.join(__dirname, '..', '.github');
-    console.log(`##[add-matcher]${path.join(matchersPath, 'tsc.json')}`);
-    console.log(
-      `##[add-matcher]${path.join(matchersPath, 'eslint-stylish.json')}`
-    );
-    console.log(
-      `##[add-matcher]${path.join(matchersPath, 'eslint-compact.json')}`
-    );
-  } catch (error) {
-    core.setFailed(error.message);
-  }
-}
+import {run} from './main';
 
 run();

tsconfig.json

@@ -2,13 +2,11 @@
   "compilerOptions": {
     "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
     "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
-    "lib": [
-      "es6"
-    ],
     "outDir": "./lib",                        /* Redirect output structure to the directory. */
     "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    "sourceMap": true,
     "strict": true,                           /* Enable all strict type-checking options. */
-    "noImplicitAny": false,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    "noImplicitAny": false,                   /* Raise error on expressions and declarations with an implied 'any' type. */
     "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
   },
   "exclude": ["__tests__", "lib", "node_modules"]