Support lts/-n aliases (#481)

Get latest version from cache if exists

.gitattributes

@@ -1,5 +1 @@
-# Set default behavior to automatically normalize line endings, and force everything to be LF, except for Windows batch files that require CRLF, so that if a repo is accessed in Unix via a file share from Windows, the scripts will work.
-* text=auto eol=lf
-*.{cmd,[cC][mM][dD]} text eol=crlf
-*.{bat,[bB][aA][tT]} text eol=crlf
 .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

@@ -3,30 +3,28 @@ name: build-test
 on:
   pull_request:
     paths-ignore:
-      - '**.md'    
-  push:    
+      - '**.md'
+  push:
     branches:
       - main
       - releases/*
     paths-ignore:
       - '**.md'
-      
+
 jobs:
   build:
-    runs-on: ${{ matrix.operating-system }}
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
-      - uses: actions/checkout@v2
-      - name: Setup node 12
-        uses: actions/setup-node@v1
+      - uses: actions/checkout@v3
+      - name: Setup Node 16.x
+        uses: actions/setup-node@v3
         with:
-          node-version: 12.x
+          node-version: 16.x
+          cache: npm
       - 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

.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

@@ -1,20 +1,24 @@
 name: Licensed
 
 on:
-  push: {branches: main}
-  pull_request: {branches: main}
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   test:
     runs-on: ubuntu-latest
     name: Check licenses
     steps:
-      - uses: actions/checkout@v2
+      - 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/2.12.2/licensed-2.12.2-linux-x64.tar.gz
+          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
+      - run: licensed status

.github/workflows/proxy.yml

@@ -3,19 +3,17 @@ name: proxy
 on:
   pull_request:
     paths-ignore:
-      - '**.md'    
-  push:    
+      - '**.md'
+  push:
     branches:
-      - master
+      - main
       - releases/*
     paths-ignore:
       - '**.md'
-      
+
 jobs:
   test-proxy:
     runs-on: ubuntu-latest
-    strategy:    
-      fail-fast: false    
     container:
       image: ubuntu:latest
       options: --dns 127.0.0.1
@@ -27,25 +25,23 @@ jobs:
     env:
       https_proxy: http://squid-proxy:3128
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Clear tool cache
         run: rm -rf $RUNNER_TOOL_CACHE/*
-      - name: Setup node 10
+      - name: Setup node 14
         uses: ./
         with:
-          node-version: 10.x
+          node-version: 14.x
       - name: Verify node and npm
-        run: __tests__/verify-node.sh 10
+        run: __tests__/verify-node.sh 14
 
   test-bypass-proxy:
     runs-on: ubuntu-latest
-    strategy:    
-      fail-fast: false
     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@v2
+      - uses: actions/checkout@v3
       - name: Clear tool cache
         run: rm -rf $RUNNER_TOOL_CACHE/*
       - name: Setup node 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

@@ -3,24 +3,24 @@ name: versions
 on:
   pull_request:
     paths-ignore:
-      - '**.md'    
-  push:    
+      - '**.md'
+  push:
     branches:
       - main
       - releases/*
     paths-ignore:
       - '**.md'
-      
+
 jobs:
   local-cache:
-    runs-on: ${{ matrix.operating-system }}
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         node-version: [10, 12, 14]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Setup Node
         uses: ./
         with:
@@ -29,15 +29,37 @@ jobs:
         run: __tests__/verify-node.sh "${{ matrix.node-version }}"
         shell: bash
 
-  manifest:
-    runs-on: ${{ matrix.operating-system }}
+  lts-syntax:
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [10.15, 12.16.0, 14.2.0]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [lts/dubnium, lts/erbium, lts/fermium, lts/*, lts/-1]
     steps:
-      - uses: actions/checkout@v2
+      - 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:
@@ -47,14 +69,14 @@ jobs:
         shell: bash
 
   check-latest:
-    runs-on: ${{ matrix.operating-system }}
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [10, 11, 12, 14]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [10, 12, 14]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Setup Node and check latest
         uses: ./
         with:
@@ -64,15 +86,30 @@ jobs:
         run: __tests__/verify-node.sh "${{ matrix.node-version }}"
         shell: bash
 
-  node-dist:
-    runs-on: ${{ matrix.operating-system }}
+  version-file:
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        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/.nvmrc'
+      - name: Verify node
+        run: __tests__/verify-node.sh 14
+
+  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@v2
+      - uses: actions/checkout@v3
       - name: Setup Node from dist
         uses: ./
         with:
@@ -82,13 +119,13 @@ jobs:
         shell: bash
 
   old-versions:
-    runs-on: ${{ matrix.operating-system }}
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        operating-system: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       # test old versions which didn't have npm and layout different
       - name: Setup node 0.12.18 from dist
         uses: ./
@@ -101,12 +138,43 @@ jobs:
   arch:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Setup node 12 x86 from dist
+      - uses: actions/checkout@v3
+      - name: Setup node 14 x86 from dist
         uses: ./
         with:
-          node-version: '12'
+          node-version: '14'
           architecture: 'x86'
       - name: Verify node
         run: __tests__/verify-arch.sh "ia32"
-        shell: bash
+        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

.licensed.yml

@@ -3,6 +3,7 @@ sources:
 
 allowed:
   - apache-2.0
+  - 0bsd
   - bsd-2-clause
   - bsd-3-clause
   - isc

CODEOWNERS

@@ -1 +1 @@
-* @actions/spark
+* @actions/actions-service

README.md

@@ -1,200 +1,129 @@
 # setup-node
 
-<p align="left">
-  <a href="https://github.com/actions/setup-node/actions?query=workflow%3Abuild-test"><img alt="build-test status" src="https://github.com/actions/setup-node/workflows/build-test/badge.svg"></a> <a href="https://github.com/actions/setup-node/actions?query=workflow%3Aversions"><img alt="versions status" src="https://github.com/actions/setup-node/workflows/versions/badge.svg"></a> <a href="https://github.com/actions/setup-node/actions?query=workflow%3Aproxy"><img alt="proxy status" src="https://github.com/actions/setup-node/workflows/proxy/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
-- configuring authentication for GPR or npm
+- 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
 
-# v2-beta
-
-A beta release which adds reliability for pulling node distributions from a cache of node releases is available by referencing the `v2-beta` tag.
-
-```yaml
-steps:
-- uses: actions/checkout@v2
-- uses: actions/setup-node@v2-beta
-  with:
-    node-version: '12'
-```
-
-It will first check the local cache for a semver match.  The hosted images have been updated with the latest of each LTS from v8, v10, v12, and v14. `self-hosted` machines will benefit from the cache as well only downloading once.  It will pull LTS versions from `main` branch of [node-versions](https://github.com/actions/node-versions/blob/main/versions-manifest.json) repository and on miss or failure, it will fall back to the previous behavior of download directly from [node dist](https://nodejs.org/dist/).
-
-The `node-version` input is optional.  If not supplied, node which is in your PATH will be used.  However, this action will still register problem matchers and support auth features.  So setting up the node environment is still a valid scenario without downloading and caching versions.
-
-# 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: '12'
-- run: npm install
+    node-version: 14
+- run: npm ci
 - run: npm test
 ```
 
-Check latest version:  
-> In basic example, without `check-latest` flag, the action tries to resolve version from local cache firstly and download only if it is not found. Local cache on image is updated with a couple of weeks latency.  
-`check-latest` flag forces the action to check if the cached version is the latest one. It reduces latency significantly but it is much more likely to incur version downloading.
+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 Virtual Environments](https://github.com/actions/virtual-environments).
+
+### Supported version syntax
+
+The `node-version` input supports the following values:
+
+ - Major versions: `12`, `14`, `16`
+ - More specific versions: `10.15`, `14.2.0`, `16.3.0`
+ - NVM LTS syntax: `lts/erbium`, `lts/fermium`, `lts/*`, `lts/-n`
+ - Latest release: `latest`/`current`/`node`
+
+**Note:** Since the latest release 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` 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@v2
-- uses: actions/setup-node@v2-beta
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
   with:
-    node-version: '12'
-    check-latest: true
-- run: npm install
+    node-version: 14
+    cache: 'npm'
+- run: npm ci
 - run: npm test
 ```
 
-Matrix Testing:
+**Caching npm dependencies in monorepos:**
+
+```yaml
+steps:
+- uses: actions/checkout@v3
+- uses: actions/setup-node@v3
+  with:
+    node-version: 14
+    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', '12' ]
+        node: [ 12, 14, 16 ]
     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
 ```
 
-Architecture:
+## Advanced usage
 
-You can use any of the [supported operating systems](https://docs.github.com/en/actions/reference/virtual-environments-for-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).
+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)
 
-When using `architecture`, `node-version` must be provided as well.
-```yaml
-jobs:
-  build:
-    runs-on: windows-latest
-    name: Node sample
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
-        with:
-          node-version: '12'
-          architecture: 'x64' # optional, x64 or x86. If not specified, x64 will be used by default
-      - run: npm install
-      - 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:
-          - 10
-          - 12
-          - 14
-        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@v2
-      - name: Setup node
-        uses: actions/setup-node@v1
-        with:
-          node-version: ${{ matrix.node_version }}
-          architecture: ${{ matrix.architecture }}
-      - run: npm install
-      - 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 }}
-```
-
-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 }}
-```
-
-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](CONDUCT)
+:wave: Be nice. See [our code of conduct](CODE_OF_CONDUCT.md)

__tests__/authutil.test.ts

@@ -123,4 +123,13 @@ describe('authutil tests', () => {
     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 +1,303 @@
+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();
+    });
+  });
+
+  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/package-lock.json

@@ -0,0 +1,395 @@
+{
+    "name": "test",
+    "version": "1.0.0",
+    "lockfileVersion": 1,
+    "requires": true,
+    "dependencies": {
+      "accepts": {
+        "version": "1.3.7",
+        "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
+        "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
+        "requires": {
+          "mime-types": "~2.1.24",
+          "negotiator": "0.6.2"
+        }
+      },
+      "array-flatten": {
+        "version": "1.1.1",
+        "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+        "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+      },
+      "body-parser": {
+        "version": "1.19.0",
+        "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
+        "integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
+        "requires": {
+          "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": {
+        "version": "3.1.0",
+        "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
+        "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg=="
+      },
+      "content-disposition": {
+        "version": "0.5.3",
+        "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.3.tgz",
+        "integrity": "sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==",
+        "requires": {
+          "safe-buffer": "5.1.2"
+        }
+      },
+      "content-type": {
+        "version": "1.0.4",
+        "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
+        "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
+      },
+      "cookie": {
+        "version": "0.4.0",
+        "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.0.tgz",
+        "integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg=="
+      },
+      "cookie-signature": {
+        "version": "1.0.6",
+        "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
+        "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+      },
+      "debug": {
+        "version": "2.6.9",
+        "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+        "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+        "requires": {
+          "ms": "2.0.0"
+        }
+      },
+      "depd": {
+        "version": "1.1.2",
+        "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
+        "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
+      },
+      "destroy": {
+        "version": "1.0.4",
+        "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
+        "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+      },
+      "ee-first": {
+        "version": "1.1.1",
+        "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
+        "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
+      },
+      "encodeurl": {
+        "version": "1.0.2",
+        "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
+        "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
+      },
+      "escape-html": {
+        "version": "1.0.3",
+        "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
+        "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
+      },
+      "etag": {
+        "version": "1.8.1",
+        "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
+        "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
+      },
+      "express": {
+        "version": "4.17.1",
+        "resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
+        "integrity": "sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==",
+        "requires": {
+          "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": {
+        "version": "1.1.2",
+        "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
+        "integrity": "sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==",
+        "requires": {
+          "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": {
+        "version": "0.1.2",
+        "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
+        "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
+      },
+      "fresh": {
+        "version": "0.5.2",
+        "resolved": "https://registry.npmjs.org/fresh/-/fresh-0.5.2.tgz",
+        "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
+      },
+      "http-errors": {
+        "version": "1.7.2",
+        "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
+        "integrity": "sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==",
+        "requires": {
+          "depd": "~1.1.2",
+          "inherits": "2.0.3",
+          "setprototypeof": "1.1.1",
+          "statuses": ">= 1.5.0 < 2",
+          "toidentifier": "1.0.0"
+        }
+      },
+      "iconv-lite": {
+        "version": "0.4.24",
+        "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
+        "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+        "requires": {
+          "safer-buffer": ">= 2.1.2 < 3"
+        }
+      },
+      "inherits": {
+        "version": "2.0.3",
+        "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+        "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+      },
+      "ipaddr.js": {
+        "version": "1.9.1",
+        "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
+        "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
+      },
+      "lru-cache": {
+        "version": "6.0.0",
+        "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+        "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+        "requires": {
+          "yallist": "^4.0.0"
+        }
+      },
+      "media-typer": {
+        "version": "0.3.0",
+        "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
+        "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
+      },
+      "merge-descriptors": {
+        "version": "1.0.1",
+        "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
+        "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
+      },
+      "methods": {
+        "version": "1.1.2",
+        "resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
+        "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4="
+      },
+      "mime": {
+        "version": "1.6.0",
+        "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
+        "integrity": "sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg=="
+      },
+      "mime-db": {
+        "version": "1.47.0",
+        "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.47.0.tgz",
+        "integrity": "sha512-QBmA/G2y+IfeS4oktet3qRZ+P5kPhCKRXxXnQEudYqUaEioAU1/Lq2us3D/t1Jfo4hE9REQPrbB7K5sOczJVIw=="
+      },
+      "mime-types": {
+        "version": "2.1.30",
+        "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.30.tgz",
+        "integrity": "sha512-crmjA4bLtR8m9qLpHvgxSChT+XoSlZi8J4n/aIdn3z92e/U47Z0V/yl+Wh9W046GgFVAmoNR/fmdbZYcSSIUeg==",
+        "requires": {
+          "mime-db": "1.47.0"
+        }
+      },
+      "ms": {
+        "version": "2.0.0",
+        "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+        "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+      },
+      "negotiator": {
+        "version": "0.6.2",
+        "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
+        "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
+      },
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+        "version": "2.3.0",
+        "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.3.0.tgz",
+        "integrity": "sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=",
+        "requires": {
+          "ee-first": "1.1.1"
+        }
+      },
+      "parseurl": {
+        "version": "1.3.3",
+        "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
+        "integrity": "sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ=="
+      },
+      "path-to-regexp": {
+        "version": "0.1.7",
+        "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
+        "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
+      },
+      "proxy-addr": {
+        "version": "2.0.6",
+        "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.6.tgz",
+        "integrity": "sha512-dh/frvCBVmSsDYzw6n926jv974gddhkFPfiN8hPOi30Wax25QZyZEGveluCgliBnqmuM+UJmBErbAUFIoDbjOw==",
+        "requires": {
+          "forwarded": "~0.1.2",
+          "ipaddr.js": "1.9.1"
+        }
+      },
+      "qs": {
+        "version": "6.7.0",
+        "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
+        "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ=="
+      },
+      "range-parser": {
+        "version": "1.2.1",
+        "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
+        "integrity": "sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg=="
+      },
+      "raw-body": {
+        "version": "2.4.0",
+        "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.0.tgz",
+        "integrity": "sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==",
+        "requires": {
+          "bytes": "3.1.0",
+          "http-errors": "1.7.2",
+          "iconv-lite": "0.4.24",
+          "unpipe": "1.0.0"
+        }
+      },
+      "safe-buffer": {
+        "version": "5.1.2",
+        "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+        "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+      },
+      "safer-buffer": {
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@@ -0,0 +1,360 @@
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+
+  /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

@@ -1,152 +1,183 @@
 [
-    {
-      "version": "14.0.0",
-      "stable": true,
-      "release_url": "https://github.com/actions/node-versions/releases/tag/14.0.0-20200423.30",
-      "files": [
-        {
-          "filename": "node-14.0.0-darwin-x64.tar.gz",
-          "arch": "x64",
-          "platform": "darwin",
-          "download_url": "https://github.com/actions/node-versions/releases/download/14.0.0-20200423.30/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/14.0.0-20200423.30/node-14.0.0-linux-x64.tar.gz"
-        },
-        {
-          "filename": "node-14.0.0-win32-x64.zip",
-          "arch": "x64",
-          "platform": "win32",
-          "download_url": "https://github.com/actions/node-versions/releases/download/14.0.0-20200423.30/node-14.0.0-win32-x64.zip"
-        }
-      ]
-    },
-    {
-      "version": "13.13.0",
-      "stable": true,
-      "release_url": "https://github.com/actions/node-versions/releases/tag/13.13.0-20200423.29",
-      "files": [
-        {
-          "filename": "node-13.13.0-darwin-x64.tar.gz",
-          "arch": "x64",
-          "platform": "darwin",
-          "download_url": "https://github.com/actions/node-versions/releases/download/13.13.0-20200423.29/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/13.13.0-20200423.29/node-13.13.0-linux-x64.tar.gz"
-        },
-        {
-          "filename": "node-13.13.0-win32-x64.zip",
-          "arch": "x64",
-          "platform": "win32",
-          "download_url": "https://github.com/actions/node-versions/releases/download/13.13.0-20200423.29/node-13.13.0-win32-x64.zip"
-        }
-      ]
-    },
-    {
-      "version": "12.16.2",
-      "stable": true,
-      "release_url": "https://github.com/actions/node-versions/releases/tag/12.16.2-20200423.28",
-      "files": [
-        {
-          "filename": "node-12.16.2-darwin-x64.tar.gz",
-          "arch": "x64",
-          "platform": "darwin",
-          "download_url": "https://github.com/actions/node-versions/releases/download/12.16.2-20200423.28/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/12.16.2-20200423.28/node-12.16.2-linux-x64.tar.gz"
-        },
-        {
-          "filename": "node-12.16.2-win32-x64.zip",
-          "arch": "x64",
-          "platform": "win32",
-          "download_url": "https://github.com/actions/node-versions/releases/download/12.16.2-20200423.28/node-12.16.2-win32-x64.zip"
-        }
-      ]
-    },
-    {
-      "version": "10.20.1",
-      "stable": true,
-      "release_url": "https://github.com/actions/node-versions/releases/tag/10.20.1-20200423.27",
-      "files": [
-        {
-          "filename": "node-10.20.1-darwin-x64.tar.gz",
-          "arch": "x64",
-          "platform": "darwin",
-          "download_url": "https://github.com/actions/node-versions/releases/download/10.20.1-20200423.27/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/10.20.1-20200423.27/node-10.20.1-linux-x64.tar.gz"
-        },
-        {
-          "filename": "node-10.20.1-win32-x64.zip",
-          "arch": "x64",
-          "platform": "win32",
-          "download_url": "https://github.com/actions/node-versions/releases/download/10.20.1-20200423.27/node-10.20.1-win32-x64.zip"
-        }
-      ]
-    },
-    {
-      "version": "8.17.0",
-      "stable": true,
-      "release_url": "https://github.com/actions/node-versions/releases/tag/8.17.0-20200423.26",
-      "files": [
-        {
-          "filename": "node-8.17.0-darwin-x64.tar.gz",
-          "arch": "x64",
-          "platform": "darwin",
-          "download_url": "https://github.com/actions/node-versions/releases/download/8.17.0-20200423.26/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/8.17.0-20200423.26/node-8.17.0-linux-x64.tar.gz"
-        },
-        {
-          "filename": "node-8.17.0-win32-x64.zip",
-          "arch": "x64",
-          "platform": "win32",
-          "download_url": "https://github.com/actions/node-versions/releases/download/8.17.0-20200423.26/node-8.17.0-win32-x64.zip"
-        }
-      ]
-    },
-    {
-      "version": "6.17.1",
-      "stable": true,
-      "release_url": "https://github.com/actions/node-versions/releases/tag/6.17.1-20200423.25",
-      "files": [
-        {
-          "filename": "node-6.17.1-darwin-x64.tar.gz",
-          "arch": "x64",
-          "platform": "darwin",
-          "download_url": "https://github.com/actions/node-versions/releases/download/6.17.1-20200423.25/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/6.17.1-20200423.25/node-6.17.1-linux-x64.tar.gz"
-        },
-        {
-          "filename": "node-6.17.1-win32-x64.zip",
-          "arch": "x64",
-          "platform": "win32",
-          "download_url": "https://github.com/actions/node-versions/releases/download/6.17.1-20200423.25/node-6.17.1-win32-x64.zip"
-        }
-      ]
-    }
-  ]
+  {
+    "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

@@ -1,22 +1,18 @@
 import * as core from '@actions/core';
 import * as io from '@actions/io';
 import * as tc from '@actions/tool-cache';
+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 * as main from '../src/main';
-import * as im from '../src/installer';
 import * as auth from '../src/authutil';
-import {context} from '@actions/github';
 
 let nodeTestManifest = require('./data/versions-manifest.json');
 let nodeTestDist = require('./data/node-dist-index.json');
 
-// let matchers = require('../matchers.json');
-// let matcherPattern = matchers.problemMatcher[0].pattern[0];
-// let matcherRegExp = new RegExp(matcherPattern.regexp);
-
 describe('setup-node', () => {
   let inputs = {} as any;
   let os = {} as any;
@@ -36,9 +32,12 @@ describe('setup-node', () => {
   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;
 
   beforeEach(() => {
     // @actions/core
@@ -63,12 +62,16 @@ describe('setup-node', () => {
     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(() => {});
@@ -96,6 +99,10 @@ describe('setup-node', () => {
       // uncomment to see debug output
       // process.stderr.write(msg + '\n');
     });
+    warningSpy.mockImplementation(msg => {
+      // uncomment to debug
+      // process.stderr.write('log:' + line + '\n');
+    });
   });
 
   afterEach(() => {
@@ -106,6 +113,7 @@ describe('setup-node', () => {
 
   afterAll(async () => {
     console.log('::stoptoken::'); // Re-enable executing of runner commands when running tests in actions
+    jest.restoreAllMocks();
   }, 100000);
 
   //--------------------------------------------------
@@ -118,7 +126,7 @@ describe('setup-node', () => {
       'mocktoken'
     );
     expect(versions).toBeDefined();
-    expect(versions?.length).toBe(6);
+    expect(versions?.length).toBe(7);
   });
 
   it('can mock dist versions', async () => {
@@ -127,47 +135,28 @@ describe('setup-node', () => {
     expect(versions?.length).toBe(23);
   });
 
-  it('can find 12.16.2 from manifest on osx', async () => {
-    os.platform = 'darwin';
-    os.arch = 'x64';
-    let versions: tc.IToolRelease[] | null = await tc.getManifestFromRepo(
-      'actions',
-      'node-versions',
-      'mocktoken'
-    );
-    expect(versions).toBeDefined();
-    let match = await tc.findFromManifest('12.16.2', true, versions);
-    expect(match).toBeDefined();
-    expect(match?.version).toBe('12.16.2');
-  });
-
-  it('can find 12 from manifest on linux', async () => {
-    os.platform = 'linux';
-    os.arch = 'x64';
-    let versions: tc.IToolRelease[] | null = await tc.getManifestFromRepo(
-      'actions',
-      'node-versions',
-      'mocktoken'
-    );
-    expect(versions).toBeDefined();
-    let match = await tc.findFromManifest('12.16.2', true, versions);
-    expect(match).toBeDefined();
-    expect(match?.version).toBe('12.16.2');
-  });
-
-  it('can find 10 from manifest on windows', async () => {
-    os.platform = 'win32';
-    os.arch = 'x64';
-    let versions: tc.IToolRelease[] | null = await tc.getManifestFromRepo(
-      'actions',
-      'node-versions',
-      'mocktoken'
-    );
-    expect(versions).toBeDefined();
-    let match = await tc.findFromManifest('10', true, versions);
-    expect(match).toBeDefined();
-    expect(match?.version).toBe('10.20.1');
-  });
+  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
@@ -222,6 +211,10 @@ describe('setup-node', () => {
     expect(cnSpy).toHaveBeenCalledWith('::error::' + errMsg + osm.EOL);
   });
 
+  //--------------------------------------------------
+  // Manifest tests
+  //--------------------------------------------------
+
   it('downloads a version from a manifest match', async () => {
     os.platform = 'linux';
     os.arch = 'x64';
@@ -235,7 +228,7 @@ describe('setup-node', () => {
     inputs['token'] = 'faketoken';
 
     let expectedUrl =
-      'https://github.com/actions/node-versions/releases/download/12.16.2-20200423.28/node-12.16.2-linux-x64.tar.gz';
+      '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(() => '');
@@ -273,7 +266,7 @@ describe('setup-node', () => {
     inputs['token'] = 'faketoken';
 
     let expectedUrl =
-      'https://github.com/actions/node-versions/releases/download/12.16.2-20200423.28/node-12.16.2-linux-x64.tar.gz';
+      '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(() => '');
@@ -341,7 +334,7 @@ describe('setup-node', () => {
     expect(cnSpy).toHaveBeenCalledWith(`::error::${errMsg}${osm.EOL}`);
   });
 
-  it('Acquires specified architecture of node', async () => {
+  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'}
@@ -397,6 +390,10 @@ describe('setup-node', () => {
       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('check latest version and resolve it from local cache', async () => {
@@ -417,6 +414,10 @@ describe('setup-node', () => {
       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}`);
     });
@@ -434,13 +435,17 @@ describe('setup-node', () => {
       exSpy.mockImplementation(async () => '/some/other/temp/path');
       cacheSpy.mockImplementation(async () => toolPath);
       const expectedUrl =
-        'https://github.com/actions/node-versions/releases/download/12.16.2-20200423.28/node-12.16.2-linux-x64.tar.gz';
+        '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}`
@@ -477,6 +482,10 @@ describe('setup-node', () => {
       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 ${versionSpec} from manifest`
       );
@@ -530,4 +539,362 @@ describe('setup-node', () => {
       expect(cnSpy).toHaveBeenCalledWith(`::add-path::${expPath}${osm.EOL}`);
     });
   });
+
+  describe('node-version-file flag', () => {
+    it('not used if node-version is provided', async () => {
+      // Arrange
+      inputs['node-version'] = '12';
+
+      // Act
+      await main.run();
+
+      // 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('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}`
+      );
+    });
+  });
+
+  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 @ ${toolPath}`);
+      process.env['GITHUB_SERVER_URL'] = '';
+      isCacheActionAvailable.mockImplementation(() => false);
+
+      await main.run();
+
+      expect(warningSpy).toHaveBeenCalledWith(
+        'The runner was not able to contact the cache service. Caching will be skipped'
+      );
+    });
+  });
+
+  describe('LTS version', () => {
+    beforeEach(() => {
+      os.platform = 'linux';
+      os.arch = 'x64';
+      inputs.stable = 'true';
+    });
+
+    it.each([
+      ['erbium', '12.16.2'],
+      ['*', '14.0.0'],
+      ['-1', '12.16.2']
+    ])(
+      'find latest LTS version and resolve it from local cache (lts/%s)',
+      async (lts, expectedVersion) => {
+        // arrange
+        inputs['node-version'] = `lts/${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...');
+      }
+    );
+  });
 });

__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-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

@@ -1,30 +1,37 @@
 name: 'Setup Node.js environment'
-description: 'Setup a Node.js environment by adding problem matchers and optionally downloading and adding it to the PATH'
+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: 12.x, 10.15.1, >=10.15.0'
+    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.'
   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'
+    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'
+    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
-# 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'
+outputs:
+  cache-hit: 
+    description: 'A boolean value to indicate if a cache was hit.'
 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 +1,249 @@
+## 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: '14'
+    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` or `.node-version`. 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
+```
+
+## Architecture
+
+You can use any of the [supported operating systems](https://docs.github.com/en/actions/reference/virtual-environments-for-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
+```

package.json

@@ -1,11 +1,11 @@
 {
   "name": "setup-node",
-  "version": "2.0.0",
+  "version": "3.1.1",
   "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",
@@ -23,23 +23,25 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.6",
-    "@actions/exec": "^1.0.3",
+    "@actions/cache": "^2.0.2",
+    "@actions/core": "^1.6.0",
+    "@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": "^1.5.4",
     "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": "^24.9.0",
-    "jest-circus": "^24.7.1",
+    "@vercel/ncc": "^0.33.4",
+    "jest": "^27.2.5",
+    "jest-circus": "^27.2.5",
     "prettier": "^1.19.1",
-    "ts-jest": "^24.3.0",
+    "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 +1,66 @@
+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;
+  }
+
+  try {
+    await cache.saveCache([cachePath], primaryKey);
+    core.info(`Cache saved with the key: ${primaryKey}`);
+  } catch (error) {
+    if (error.name === cache.ValidationError.name) {
+      throw error;
+    } else if (error.name === cache.ReserveCacheError.name) {
+      core.info(error.message);
+    } else {
+      core.warning(`${error.message}`);
+    }
+  }
+};
+
+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', 'yarn.lock'],
+    getCacheFolderCommand: 'npm config get cache'
+  },
+  pnpm: {
+    lockFilePatterns: ['pnpm-lock.yaml'],
+    getCacheFolderCommand: 'pnpm store path'
+  },
+  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;
+};
+
+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

@@ -24,6 +24,10 @@ interface INodeVersionInfo {
   fileName: string;
 }
 
+interface INodeRelease extends tc.IToolRelease {
+  lts?: string;
+}
+
 export async function getNode(
   versionSpec: string,
   stable: boolean,
@@ -31,16 +35,35 @@ export async function getNode(
   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
+      osArch,
+      manifest
     );
     if (resolvedVersion) {
       versionSpec = resolvedVersion;
@@ -66,7 +89,13 @@ export async function getNode(
     // Try download from internal distribution (popular versions only)
     //
     try {
-      info = await getInfoFromManifest(versionSpec, stable, auth, osArch);
+      info = await getInfoFromManifest(
+        versionSpec,
+        stable,
+        auth,
+        osArch,
+        manifest
+      );
       if (info) {
         core.info(
           `Acquiring ${info.resolvedVersion} - ${info.arch} from ${info.downloadUrl}`
@@ -97,7 +126,7 @@ export async function getNode(
     // Download from nodejs.org
     //
     if (!downloadPath) {
-      info = await getInfoFromDist(versionSpec, arch);
+      info = await getInfoFromDist(versionSpec, arch, nodeVersions);
       if (!info) {
         throw new Error(
           `Unable to find Node version '${versionSpec}' for platform ${osPlat} and architecture ${osArch}.`
@@ -128,7 +157,7 @@ export async function getNode(
     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');
+      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'));
@@ -170,20 +199,73 @@ export async function getNode(
   core.addPath(toolPath);
 }
 
+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 '${versionSpec}'`
+    );
+  }
+
+  core.debug(`LTS alias '${alias}' for Node version '${versionSpec}'`);
+
+  // Supported formats are `lts/<alias>`, `lts/*`, and `lts/-n`. Where asterisk means highest possible LTS and -n means the nth-highest.
+  const n = Number(alias);
+  const aliases = Object.fromEntries(
+    manifest
+      .filter(x => x.lts && x.stable === stable)
+      .map(x => [x.lts!.toLowerCase(), x])
+      .reverse()
+  );
+  const numbered = Object.values(aliases);
+  const release =
+    alias === '*'
+      ? numbered[numbered.length - 1]
+      : n < 0
+      ? numbered[numbered.length - 1 + n]
+      : aliases[alias];
+
+  if (!release) {
+    throw new Error(
+      `Unable to find LTS release '${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())
+  osArch: string = translateArchToDistUrl(os.arch()),
+  manifest: tc.IToolRelease[] | undefined
 ): Promise<INodeVersionInfo | null> {
   let info: INodeVersionInfo | null = null;
-  const releases = await tc.getManifestFromRepo(
-    'actions',
-    'node-versions',
-    auth,
-    'main'
-  );
-  const rel = await tc.findFromManifest(versionSpec, stable, releases, osArch);
+  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>{};
@@ -198,14 +280,18 @@ async function getInfoFromManifest(
 
 async function getInfoFromDist(
   versionSpec: string,
-  arch: string = os.arch()
+  arch: string = os.arch(),
+  nodeVersions?: INodeVersion[]
 ): Promise<INodeVersionInfo | null> {
   let osPlat: string = os.platform();
   let osArch: string = translateArchToDistUrl(arch);
 
-  let version: string;
+  let version: string = await queryDistForMatch(
+    versionSpec,
+    arch,
+    nodeVersions
+  );
 
-  version = await queryDistForMatch(versionSpec, arch);
   if (!version) {
     return null;
   }
@@ -234,10 +320,17 @@ async function resolveVersionFromManifest(
   versionSpec: string,
   stable: boolean,
   auth: string | undefined,
-  osArch: string = translateArchToDistUrl(os.arch())
+  osArch: string = translateArchToDistUrl(os.arch()),
+  manifest: tc.IToolRelease[] | undefined
 ): Promise<string | undefined> {
   try {
-    const info = await getInfoFromManifest(versionSpec, stable, auth, osArch);
+    const info = await getInfoFromManifest(
+      versionSpec,
+      stable,
+      auth,
+      osArch,
+      manifest
+    );
     return info?.resolvedVersion;
   } catch (err) {
     core.info('Unable to resolve version from manifest...');
@@ -275,7 +368,8 @@ function evaluateVersions(versions: string[], versionSpec: string): string {
 
 async function queryDistForMatch(
   versionSpec: string,
-  arch: string = os.arch()
+  arch: string = os.arch(),
+  nodeVersions?: INodeVersion[]
 ): Promise<string> {
   let osPlat: string = os.platform();
   let osArch: string = translateArchToDistUrl(arch);
@@ -296,8 +390,17 @@ async function queryDistForMatch(
       throw new Error(`Unexpected OS '${osPlat}'`);
   }
 
+  if (!nodeVersions) {
+    core.debug('No dist manifest cached');
+    nodeVersions = await getVersionsFromDist();
+  }
+
   let versions: string[] = [];
-  let nodeVersions = await module.exports.getVersionsFromDist();
+
+  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
@@ -390,3 +493,16 @@ function translateArchToDistUrl(arch: string): string {
       return arch;
   }
 }
+
+export function parseNodeVersionFile(contents: string): string {
+  let nodeVersion = contents.trim();
+
+  if (/^v\d/.test(nodeVersion)) {
+    nodeVersion = nodeVersion.substring(1);
+  }
+  return nodeVersion;
+}
+
+function isLatestSyntax(versionSpec): boolean {
+  return ['current', 'latest', 'node'].includes(versionSpec);
+}

src/main.ts

@@ -1,8 +1,10 @@
 import * as core from '@actions/core';
 import * as installer from './installer';
+import fs from 'fs';
 import * as auth from './authutil';
 import * as path from 'path';
-import {URL} from 'url';
+import {restoreCache} from './cache-restore';
+import {isGhes, isCacheFeatureAvailable} from './cache-utils';
 import os = require('os');
 
 export async function run() {
@@ -11,12 +13,10 @@ export async function run() {
     // 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('node-version');
-    if (!version) {
-      version = core.getInput('version');
-    }
+    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.
@@ -45,22 +45,53 @@ export async function run() {
       auth.configAuthentication(registryUrl, alwaysAuth);
     }
 
-    const matchersPath = path.join(__dirname, '..', '.github');
-    console.log(`##[add-matcher]${path.join(matchersPath, 'tsc.json')}`);
-    console.log(
+    if (cache && isCacheFeatureAvailable()) {
+      const cacheDependencyPath = core.getInput('cache-dependency-path');
+      await restoreCache(cache, cacheDependencyPath);
+    }
+
+    const matchersPath = path.join(__dirname, '../..', '.github');
+    core.info(`##[add-matcher]${path.join(matchersPath, 'tsc.json')}`);
+    core.info(
       `##[add-matcher]${path.join(matchersPath, 'eslint-stylish.json')}`
     );
-    console.log(
+    core.info(
       `##[add-matcher]${path.join(matchersPath, 'eslint-compact.json')}`
     );
-  } catch (error) {
-    core.setFailed(error.message);
+  } catch (err) {
+    core.setFailed(err.message);
   }
 }
 
-function isGhes(): boolean {
-  const ghUrl = new URL(
-    process.env['GITHUB_SERVER_URL'] || 'https://github.com'
-  );
-  return ghUrl.hostname.toUpperCase() !== 'GITHUB.COM';
+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;
 }