feat: support standalone mode with @pnpm/exe bootstrap

- When standalone=true, bootstrap with @pnpm/exe via npm ci
- When standalone=false, bootstrap with pnpm via npm ci
- Both use pnpm self-update to reach the target version
- Remove --ignore-scripts from npm ci so @pnpm/exe install scripts run
- Add standalone test back to CI

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/FUNDING.yml

@@ -1,12 +1,2 @@
-# These are supported funding model platforms
+custom:
-
+  - https://opencollective.com/pnpm
-github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
-patreon: khai96_
-open_collective: # Collective unavailable
-ko_fi: # Replace with a single Ko-fi username
-tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
-community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-liberapay: # Replace with a single Liberapay username
-issuehunt: # disabled
-otechie: # Replace with a single Otechie username
-custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/dependabot.yml

@@ -5,6 +5,3 @@ updates:
     schedule:
       interval: weekly
     open-pull-requests-limit: 10
-    labels:
-    - dependabot
-    - github-actions

.github/workflows/test.yaml

@@ -15,28 +15,36 @@ jobs:
       fail-fast: false
       matrix:
         pnpm:
-          - 4.11.1
+          - 9.15.5
         os:
           - ubuntu-latest
           - macos-latest
           - windows-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Run the action
         uses: ./
         with:
-          version: 4.11.1
+          version: 9.15.5
 
       - name: 'Test: which'
         run: which pnpm; which pnpx
 
-      - name: 'Test: install'
+      - name: 'Test: version'
-        run: pnpm install
+        run: pnpm --version
 
-  test_explicit_inputs:
+      - name: 'Test: install in a fresh project'
-    name: Test with explicit inputs
+        run: |
+          mkdir /tmp/test-project
+          cd /tmp/test-project
+          pnpm init
+          pnpm add is-odd
+        shell: bash
+
+  test_dest:
+    name: Test with dest
 
     runs-on: ${{ matrix.os }}
 
@@ -44,26 +52,61 @@ jobs:
       fail-fast: false
       matrix:
         pnpm:
-          - 4.11.1
+          - 9.15.5
         os:
           - ubuntu-latest
           - macos-latest
           - windows-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Run the action
         uses: ./
         with:
-          version: 4.11.1
+          version: 9.15.5
           dest: ~/test/pnpm
 
       - name: 'Test: which'
         run: which pnpm && which pnpx
 
-      - name: 'Test: install'
+      - name: 'Test: version'
-        run: pnpm install
+        run: pnpm --version
+
+  test_standalone:
+    name: Test with standalone
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+
+      - name: Run the action
+        uses: ./
+        with:
+          version: 9.15.0
+          standalone: true
+
+      - name: 'Test: which'
+        run: which pnpm
+
+      - name: 'Test: version'
+        run: pnpm --version
+
+      - name: 'Test: install in a fresh project'
+        run: |
+          mkdir /tmp/test-standalone
+          cd /tmp/test-standalone
+          pnpm init
+          pnpm add is-odd
+        shell: bash
 
   test_run_install:
     name: 'Test with run_install (${{ matrix.run_install.name }}, ${{ matrix.os }})'
@@ -74,7 +117,7 @@ jobs:
       fail-fast: false
       matrix:
         pnpm:
-          - 4.11.1
+          - 9.15.5
         os:
           - ubuntu-latest
           - macos-latest
@@ -82,11 +125,6 @@ jobs:
         run_install:
           - name: 'null'
             value: 'null'
-          - name: 'empty object'
-            value: '{}'
-          - name: 'recursive'
-            value: |
-              recursive: true
           - name: 'global'
             value: |
               args:
@@ -94,29 +132,18 @@ jobs:
                 - --global-dir=./pnpm-global
                 - npm
                 - yarn
-                - pnpm
-          - name: 'array'
-            value: |
-              - {}
-              - recursive: true
-              - args:
-                - --global
-                - --global-dir=./pnpm-global
-                - npm
-                - yarn
-                - pnpm
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Run the action
         uses: ./
         with:
-          version: 4.11.1
+          version: 9.15.5
           run_install: ${{ matrix.run_install.value }}
 
       - name: 'Test: which'
         run: which pnpm; which pnpx
 
-      - name: 'Test: install'
+      - name: 'Test: version'
-        run: pnpm install
+        run: pnpm --version

README.md

@@ -1,16 +1,24 @@
-# Setup PNPM
+> ## :warning: Upgrade from v2!
+>
+> The v2 version of this action [has stopped working](https://github.com/pnpm/action-setup/issues/135) with newer Node.js versions. Please, upgrade to the latest version to fix any issues.
 
-Install PNPM package manager.
+# Setup pnpm
+
+Install pnpm package manager.
 
 ## Inputs
 
 ### `version`
 
-**Required** Version of PNPM to install.
+Version of pnpm to install.
+
+**Optional** when there is a [`packageManager` field in the `package.json`](https://nodejs.org/api/corepack.html).
+
+otherwise, this field is **required** It supports npm versioning scheme, it could be an exact version (such as `6.24.1`), or a version range (such as `6`, `6.x.x`, `6.24.x`, `^6.24.1`, `*`, etc.), or `latest`.
 
 ### `dest`
 
-**Optional** Where to store PNPM files.
+**Optional** Where to store pnpm files.
 
 ### `run_install`
 
@@ -32,7 +40,25 @@ If `run_install` is a YAML string representation of either an object or an array
 
 #### `run_install.args`
 
-**Optional** (_type:_ `string[]`) Additional arguments after `pnpm [recursive] install`, e.g. `[--frozen-lockfile, --strict-peer-dependencies]`.
+**Optional** (_type:_ `string[]`) Additional arguments after `pnpm [recursive] install`, e.g. `[--ignore-scripts, --strict-peer-dependencies]`.
+
+### `cache`
+
+**Optional** (_type:_ `boolean`, _default:_ `false`) Whether to cache the pnpm store directory.
+
+### `cache_dependency_path`
+
+**Optional** (_type:_ `string|string[]`, _default:_ `pnpm-lock.yaml`) File path to the pnpm lockfile, which contents hash will be used as a cache key.
+
+### `package_json_file`
+
+**Optional** (_type:_ `string`, _default:_ `package.json`) File path to the `package.json`/[`package.yaml`](https://github.com/pnpm/pnpm/pull/1799) to read "packageManager" configuration.
+
+### `standalone`
+
+**Optional** (_type:_ `boolean`, _default:_ `false`) When set to true, [@pnpm/exe](https://www.npmjs.com/package/@pnpm/exe), which is a Node.js bundled package, will be installed, enabling using `pnpm` without Node.js.
+
+This is useful when you want to use a incompatible pair of Node.js and pnpm.
 
 ## Outputs
 
@@ -46,7 +72,9 @@ Location of `pnpm` and `pnpx` command.
 
 ## Usage example
 
-### Just install PNPM
+### Install only pnpm without `packageManager`
+
+This works when the repo either doesn't have a `package.json` or has a `package.json` but it doesn't specify `packageManager`.
 
 ```yaml
 on:
@@ -54,15 +82,18 @@ on:
   - pull_request
 
 jobs:
-  runs-on: ubuntu-latest
+  install:
+    runs-on: ubuntu-latest
 
-  steps:
+    steps:
-    - uses: pnpm/action-setup@v1.2.1
+      - uses: pnpm/action-setup@v4
-      with:
+        with:
-        version: 5.17.2
+          version: 10
 ```
 
-### Install PNPM and a few NPM packages
+###  Install only pnpm with `packageManager`
+
+Omit `version` input to use the version in the [`packageManager` field in the `package.json`](https://nodejs.org/api/corepack.html).
 
 ```yaml
 on:
@@ -70,18 +101,34 @@ on:
   - pull_request
 
 jobs:
-  runs-on: ubuntu-latest
+  install:
+    runs-on: ubuntu-latest
 
-  steps:
+    steps:
-    - uses: actions/checkout@v2
+      - uses: pnpm/action-setup@v4
+```
 
-    - uses: pnpm/action-setup@v1.2.1
+### Install pnpm and a few npm packages
-      with:
+
-        version: 5.17.2
+```yaml
-        run_install: |
+on:
-          - recursive: true
+  - push
-            args: [--frozen-lockfile, --strict-peer-dependencies]
+  - pull_request
-          - args: [--global, gulp, prettier, typescript]
+
+jobs:
+  install:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 10
+          run_install: |
+            - recursive: true
+              args: [--strict-peer-dependencies]
+            - args: [--global, gulp, prettier, typescript]
 ```
 
 ### Use cache to reduce installation time
@@ -92,26 +139,21 @@ on:
   - pull_request
 
 jobs:
-  runs-on: ubuntu-latest
+  cache-and-install:
+    runs-on: ubuntu-latest
 
-  steps:
+    steps:
-    build:
+      - name: Checkout
-      - uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Cache pnpm modules
+      - uses: pnpm/action-setup@v4
-        uses: actions/cache@v2
+        name: Install pnpm
-        env:
-          cache-name: cache-pnpm-modules
         with:
-          path: ~/.pnpm-store
+          version: 10
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
+          cache: true
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
 
-      - uses: pnpm/action-setup@v1.2.1
+      - name: Install dependencies
-        with:
+        run: pnpm install
-          version: 5.17.2
-          run_install: true
 ```
 
 **Note:** You don't need to run `pnpm store prune` at the end; post-action has already taken care of that.
@@ -122,4 +164,4 @@ This action does not setup Node.js for you, use [actions/setup-node](https://git
 
 ## License
 
-[MIT](https://git.io/JfclH) © [Hoàng Văn Khải](https://github.com/KSXGitHub/)
+[MIT](https://github.com/pnpm/action-setup/blob/master/LICENSE.md) © [Hoàng Văn Khải](https://github.com/KSXGitHub/)

action.yml

@@ -1,21 +1,42 @@
-name: Setup PNPM
+name: Setup pnpm
-description: Install PNPM package manager
+description: Install pnpm package manager
 branding:
   icon: package
   color: orange
 inputs:
   version:
-    description: Version of PNPM to install
+    description: Version of pnpm to install
-    required: true
+    required: false
   dest:
-    description: Where to store PNPM files
+    description: Where to store pnpm files
     required: false
     default: ~/setup-pnpm
   run_install:
     description: If specified, run `pnpm install`
     required: false
     default: 'null'
+  cache:
+    description: Whether to cache the pnpm store directory
+    required: false
+    default: 'false'
+  cache_dependency_path:
+    description: File path to the pnpm lockfile, which contents hash will be used as a cache key
+    required: false
+    default: 'pnpm-lock.yaml'
+  package_json_file:
+    description: File path to the package.json to read "packageManager" configuration. This path must be relative to the repository root (GITHUB_WORKSPACE).
+    required: false
+    default: 'package.json'
+  standalone:
+    description: When set to true, @pnpm/exe, which is a Node.js bundled package, will be installed, enabling using pnpm without Node.js.
+    required: false
+    default: 'false'
+outputs:
+  dest:
+    description: Expanded path of inputs#dest
+  bin_dest:
+    description: Location of `pnpm` and `pnpx` command
 runs:
-  using: node12
+  using: node24
   main: dist/index.js
   post: dist/index.js

package.json

@@ -1,27 +1,23 @@
 {
   "private": true,
   "scripts": {
-    "build:schemas": "ts-schema-autogen generate",
+    "build:bundle": "esbuild src/index.ts --bundle --platform=node --target=node24 --format=cjs --minify --outfile=dist/index.js --loader:.json=json",
-    "build:ncc": "ncc build --minify --no-source-map-register --no-cache dist/tsc/index.js --out dist/",
+    "build": "pnpm run build:bundle",
-    "build": "pnpm run build:schemas && tsc && pnpm run build:ncc",
     "start": "pnpm run build && sh ./run.sh"
   },
   "dependencies": {
-    "node-fetch": "^2.6.1",
+    "@actions/cache": "^4.1.0",
+    "@actions/core": "^1.10.1",
+    "@actions/exec": "^1.1.1",
+    "@actions/glob": "^0.5.0",
+    "@types/expand-tilde": "^2.0.2",
+    "@types/node": "^22.0.0",
     "expand-tilde": "^2.0.2",
-    "js-yaml": "^4.0.0",
+    "yaml": "^2.3.4",
-    "ajv": "^6.12.5",
+    "zod": "^3.22.4"
-    "fs-extra": "^9.1.0",
-    "@actions/core": "^1.2.6",
-    "@types/expand-tilde": "^2.0.0",
-    "@types/node-fetch": "^2.5.8",
-    "@types/js-yaml": "^4.0.0",
-    "@types/fs-extra": "^9.0.8",
-    "@types/node": "^14.14.35"
   },
   "devDependencies": {
-    "typescript": "^4.2.3",
+    "esbuild": "^0.27.4",
-    "@ts-schema-autogen/cli": "^0.1.2",
+    "typescript": "^5.3.3"
-    "@vercel/ncc": "^0.27.0"
   }
 }

run.sh

@@ -4,4 +4,5 @@ export HOME="$(pwd)"
 export INPUT_VERSION=4.11.1
 export INPUT_DEST='~/pnpm.temp'
 export INPUT_RUN_INSTALL=null
+export INPUT_standalone=false
 exec node dist/index.js

src/cache-restore/index.ts

@@ -0,0 +1,19 @@
+import { isFeatureAvailable } from '@actions/cache'
+import { endGroup, startGroup, warning } from '@actions/core'
+import { Inputs } from '../inputs'
+import { runRestoreCache } from './run'
+
+export async function restoreCache(inputs: Inputs) {
+  if (!inputs.cache) return
+
+  if (!isFeatureAvailable()) {
+    warning('Cache is not available, skipping cache restoration')
+    return
+  }
+
+  startGroup('Restoring cache...')
+  await runRestoreCache(inputs)
+  endGroup()
+}
+
+export default restoreCache

src/cache-restore/run.ts

@@ -0,0 +1,39 @@
+import { restoreCache } from '@actions/cache'
+import { debug, info, saveState, setOutput } from '@actions/core'
+import { getExecOutput } from '@actions/exec'
+import { hashFiles } from '@actions/glob'
+import os from 'os'
+import { Inputs } from '../inputs'
+
+export async function runRestoreCache(inputs: Inputs) {
+  const cachePath = await getCacheDirectory()
+  saveState('cache_path', cachePath)
+
+  const fileHash = await hashFiles(inputs.cacheDependencyPath)
+  if (!fileHash) {
+    throw new Error('Some specified paths were not resolved, unable to cache dependencies.')
+  }
+
+  const primaryKey = `pnpm-cache-${process.env.RUNNER_OS}-${os.arch()}-${fileHash}`
+  debug(`Primary key is ${primaryKey}`)
+  saveState('cache_primary_key', primaryKey)
+
+  let cacheKey = await restoreCache([cachePath], primaryKey)
+
+  setOutput('cache-hit', Boolean(cacheKey))
+
+  if (!cacheKey) {
+    info(`Cache is not found`)
+    return
+  }
+
+  saveState('cache_restored_key', cacheKey)
+  info(`Cache restored from key: ${cacheKey}`)
+}
+
+async function getCacheDirectory() {
+  const { stdout } = await getExecOutput('pnpm store path --silent')
+  const cacheFolderPath = stdout.trim()
+  debug(`Cache folder is set to "${cacheFolderPath}"`)
+  return cacheFolderPath
+}

src/cache-save/index.ts

@@ -0,0 +1,15 @@
+import { setFailed } from '@actions/core'
+import { Inputs } from '../inputs'
+import { runSaveCache } from './run'
+
+export async function saveCache(inputs: Inputs) {
+  if (!inputs.cache) return
+
+  try {
+    await runSaveCache()
+  } catch (error) {
+    setFailed((error as Error).message)
+  }
+}
+
+export default saveCache

src/cache-save/run.ts

@@ -0,0 +1,18 @@
+import { saveCache } from '@actions/cache'
+import { getState, info } from '@actions/core'
+
+export async function runSaveCache() {
+  const state = getState('cache_restored_key')
+  const primaryKey = getState('cache_primary_key')
+  const cachePath = getState('cache_path')
+
+  if (primaryKey === state) {
+    info(`Cache hit occurred on the primary key ${primaryKey}, not saving cache.`)
+    return
+  }
+
+  const cacheId = await saveCache([cachePath], primaryKey)
+  if (cacheId == -1) return
+
+  info(`Cache saved with the key: ${primaryKey}`)
+}

src/index.ts

@@ -1,21 +1,39 @@
 import { setFailed, saveState, getState } from '@actions/core'
-import getInputs from './inputs'
+import restoreCache from './cache-restore'
-import setOutputs from './outputs'
+import saveCache from './cache-save'
+import getInputs, { Inputs } from './inputs'
 import installPnpm from './install-pnpm'
+import setOutputs from './outputs'
 import pnpmInstall from './pnpm-install'
 import pruneStore from './pnpm-store-prune'
 
 async function main() {
   const inputs = getInputs()
-  const isPost = getState('is_post')
+
-  if (isPost === 'true') return pruneStore(inputs)
+  if (getState('is_post') === 'true') {
+    await runPost(inputs)
+  } else {
+    await runMain(inputs)
+  }
+}
+
+async function runMain(inputs: Inputs) {
   saveState('is_post', 'true')
+
   await installPnpm(inputs)
   console.log('Installation Completed!')
   setOutputs(inputs)
+
+  await restoreCache(inputs)
+
   pnpmInstall(inputs)
 }
 
+async function runPost(inputs: Inputs) {
+  pruneStore(inputs)
+  await saveCache(inputs)
+}
+
 main().catch(error => {
   console.error(error)
   setFailed(error)

src/inputs/index.ts

@@ -1,11 +1,15 @@
-import { getInput, InputOptions } from '@actions/core'
+import { getBooleanInput, getInput, InputOptions } from '@actions/core'
 import expandTilde from 'expand-tilde'
 import { RunInstall, parseRunInstall } from './run-install'
 
 export interface Inputs {
-  readonly version: string
+  readonly version?: string
   readonly dest: string
+  readonly cache: boolean
+  readonly cacheDependencyPath: string
   readonly runInstall: RunInstall[]
+  readonly packageJsonFile: string
+  readonly standalone: boolean
 }
 
 const options: InputOptions = {
@@ -15,9 +19,13 @@ const options: InputOptions = {
 const parseInputPath = (name: string) => expandTilde(getInput(name, options))
 
 export const getInputs = (): Inputs => ({
-  version: getInput('version', options),
+  version: getInput('version'),
   dest: parseInputPath('dest'),
+  cache: getBooleanInput('cache'),
+  cacheDependencyPath: parseInputPath('cache_dependency_path'),
   runInstall: parseRunInstall('run_install'),
+  packageJsonFile: parseInputPath('package_json_file'),
+  standalone: getBooleanInput('standalone'),
 })
 
 export default getInputs

src/inputs/run-install-input.schema.autogen.json

@@ -1,21 +0,0 @@
-{
-  "$schema": "https://raw.githubusercontent.com/ksxnodeapps/ts-schema-autogen/master/packages/schemas/config.schema.json",
-  "instruction": {
-    "compilerOptions": {
-      "strict": true,
-      "target": "ES2018",
-      "lib": [
-        "ES2018",
-        "ES2019",
-        "ES2020",
-        "ESNext"
-      ],
-      "moduleResolution": "Node",
-      "esModuleInterop": true,
-      "resolveJsonModule": true
-    },
-    "input": "run-install.ts",
-    "symbol": "RunInstallInput",
-    "output": "run-install-input.schema.json"
-  }
-}

src/inputs/run-install-input.schema.json

@@ -1,39 +0,0 @@
-{
-  "anyOf": [
-    {
-      "$ref": "#/definitions/RunInstall"
-    },
-    {
-      "type": "array",
-      "items": {
-        "$ref": "#/definitions/RunInstall"
-      }
-    },
-    {
-      "type": [
-        "null",
-        "boolean"
-      ]
-    }
-  ],
-  "definitions": {
-    "RunInstall": {
-      "type": "object",
-      "properties": {
-        "recursive": {
-          "type": "boolean"
-        },
-        "cwd": {
-          "type": "string"
-        },
-        "args": {
-          "type": "array",
-          "items": {
-            "type": "string"
-          }
-        }
-      }
-    }
-  },
-  "$schema": "http://json-schema.org/draft-07/schema#"
-}

src/inputs/run-install.ts

@@ -1,39 +1,41 @@
-import process from 'process'
+import { getInput, error } from '@actions/core'
-import { load } from 'js-yaml'
+import { parse as parseYaml } from 'yaml'
-import Ajv from 'ajv'
+import { z, ZodError } from 'zod'
-import { getInput, error, InputOptions } from '@actions/core'
-import runInstallSchema from './run-install-input.schema.json'
 
-export interface RunInstall {
+const RunInstallSchema = z.object({
-  readonly recursive?: boolean
+  recursive: z.boolean().optional(),
-  readonly cwd?: string
+  cwd: z.string().optional(),
-  readonly args?: readonly string[]
+  args: z.array(z.string()).optional(),
-}
+})
 
-export type RunInstallInput =
+const RunInstallInputSchema = z.union([
-  | null
+  z.null(),
-  | boolean
+  z.boolean(),
-  | RunInstall
+  RunInstallSchema,
-  | RunInstall[]
+  z.array(RunInstallSchema),
+])
 
-const options: InputOptions = {
+export type RunInstallInput = z.infer<typeof RunInstallInputSchema>
-  required: true,
+export type RunInstall = z.infer<typeof RunInstallSchema>
-}
 
-export function parseRunInstall(name: string): RunInstall[] {
+export function parseRunInstall(inputName: string): RunInstall[] {
-  const result: RunInstallInput = load(getInput(name, options)) as any
+  const input = getInput(inputName, { required: true })
-  const ajv = new Ajv({
+  const parsedInput: unknown = parseYaml(input)
-    allErrors: true,
+
-  })
+  try {
-  const validate = ajv.compile(runInstallSchema)
+    const result: RunInstallInput = RunInstallInputSchema.parse(parsedInput)
-  if (!validate(result)) {
+    if (!result) return []
-    for (const errorItem of validate.errors!) {
+    if (result === true) return [{ recursive: true }]
-      error(`with.run_install${errorItem.dataPath}: ${errorItem.message}`)
+    if (Array.isArray(result)) return result
+    return [result]
+  } catch (exception: unknown) {
+    error(`Error for input "${inputName}" = ${input}`)
+
+    if (exception instanceof ZodError) {
+      error(`Errors: ${exception.errors}`)
+    } else {
+      error(`Exception: ${exception}`)
     }
-    return process.exit(1)
+    process.exit(1)
   }
-  if (!result) return []
-  if (result === true) return [{ recursive: true }]
-  if (Array.isArray(result)) return result
-  return [result]
 }

src/install-pnpm/bootstrap/exe-lock.json

@@ -0,0 +1,147 @@
+{
+  "name": "bootstrap-exe",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "@pnpm/exe": "10.32.1"
+      }
+    },
+    "node_modules/@pnpm/exe": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/exe/-/exe-10.32.1.tgz",
+      "integrity": "sha512-baEtwHeZwmZAdBuuDDL6tbdGg5KpxhPxr3QFfYTGXvY6ws+Z1bN0mQ7ZjcaXBSC1HuLpVXnZ6NsBiaZ2DMv4vg==",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "bin": {
+        "pnpm": "pnpm"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      },
+      "optionalDependencies": {
+        "@pnpm/linux-arm64": "10.32.1",
+        "@pnpm/linux-x64": "10.32.1",
+        "@pnpm/macos-arm64": "10.32.1",
+        "@pnpm/macos-x64": "10.32.1",
+        "@pnpm/win-arm64": "10.32.1",
+        "@pnpm/win-x64": "10.32.1"
+      }
+    },
+    "node_modules/@pnpm/linux-arm64": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/linux-arm64/-/linux-arm64-10.32.1.tgz",
+      "integrity": "sha512-6uB0B+XvunQwHGzIMk2JCkl4Ur6BtM4XbJSwB/mgpWmXDoX/KTJmgx2lodcTjgJSGSySCHfIVuTR9sj/F2D4EA==",
+      "cpu": [
+        "arm64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "bin": {
+        "pnpm": "pnpm"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    },
+    "node_modules/@pnpm/linux-x64": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/linux-x64/-/linux-x64-10.32.1.tgz",
+      "integrity": "sha512-AM2tv23Fg7h+nV+adqA/SkZKUysSIEetHfBwYFl8ArgdgkqbGoQy0rAOdKYQBb920CqfexXfI8OA8kPCzRxYng==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "bin": {
+        "pnpm": "pnpm"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    },
+    "node_modules/@pnpm/macos-arm64": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/macos-arm64/-/macos-arm64-10.32.1.tgz",
+      "integrity": "sha512-Zr4JkhRbtGVsYgbuGZO0dq/6FPOn072Pdo0ubmqWtc14cUATKgAJD7efG03yqr3MLgtwFHgdtUzZ1WsaYAtUTA==",
+      "cpu": [
+        "arm64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "bin": {
+        "pnpm": "pnpm"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    },
+    "node_modules/@pnpm/macos-x64": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/macos-x64/-/macos-x64-10.32.1.tgz",
+      "integrity": "sha512-Yk6q3oFDu//OniXJxfTSHo+aew1LX81FcbzJAtEkcCeTQ0SLbQT6J3QiOMNikp8n8IjNhsy+bn2bdkUxaw+akA==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "bin": {
+        "pnpm": "pnpm"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    },
+    "node_modules/@pnpm/win-arm64": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/win-arm64/-/win-arm64-10.32.1.tgz",
+      "integrity": "sha512-P8rsP5IUetpYjr2iwggoswL2qUukYrJoToXWuMyo8immn58CsYxaXsHVQ1Oq1R3XMfmGGWTXLsiJuQ7H991MRg==",
+      "cpu": [
+        "arm64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "bin": {
+        "pnpm": "pnpm.exe"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    },
+    "node_modules/@pnpm/win-x64": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/@pnpm/win-x64/-/win-x64-10.32.1.tgz",
+      "integrity": "sha512-i24GwbtBO8ojrhp8WWimX7NgZs0UKH1171oRt6qcRL+a+FxE0Eggv2y0KP7ZI7F3+LZMarwr3tnYsZryfciUOg==",
+      "cpu": [
+        "x64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "bin": {
+        "pnpm": "pnpm.exe"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    }
+  }
+}

src/install-pnpm/bootstrap/pnpm-lock.json

@@ -0,0 +1,28 @@
+{
+  "name": "bootstrap-pnpm",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "pnpm": "latest"
+      }
+    },
+    "node_modules/pnpm": {
+      "version": "10.32.1",
+      "resolved": "https://registry.npmjs.org/pnpm/-/pnpm-10.32.1.tgz",
+      "integrity": "sha512-pwaTjw6JrBRWtlY+q07fHR+vM2jRGR/FxZeQ6W3JGORFarLmfWE94QQ9LoyB+HMD5rQNT/7KnfFe8a1Wc0jyvg==",
+      "license": "MIT",
+      "bin": {
+        "pnpm": "bin/pnpm.cjs",
+        "pnpx": "bin/pnpx.cjs"
+      },
+      "engines": {
+        "node": ">=18.12"
+      },
+      "funding": {
+        "url": "https://opencollective.com/pnpm"
+      }
+    }
+  }
+}

src/install-pnpm/index.ts

@@ -9,7 +9,7 @@ export async function install(inputs: Inputs) {
   const status = await runSelfInstaller(inputs)
   endGroup()
   if (status) {
-    return setFailed(`Something does wrong, self-installer exits with code ${status}`)
+    return setFailed(`Something went wrong, self-installer exits with code ${status}`)
   }
 }
 

src/install-pnpm/run.ts

@@ -1,28 +1,119 @@
+import { addPath, exportVariable } from '@actions/core'
 import { spawn } from 'child_process'
-import { execPath } from 'process'
+import { rm, writeFile, mkdir } from 'fs/promises'
-import { join } from 'path'
+import { readFileSync } from 'fs'
-import { remove, ensureFile, writeFile } from 'fs-extra'
+import path from 'path'
-import fetch from 'node-fetch'
+import util from 'util'
 import { Inputs } from '../inputs'
+import { parse as parseYaml } from 'yaml'
+import pnpmLock from './bootstrap/pnpm-lock.json'
+import exeLock from './bootstrap/exe-lock.json'
+
+const BOOTSTRAP_PNPM_PACKAGE_JSON = JSON.stringify({ private: true, dependencies: { pnpm: pnpmLock.packages['node_modules/pnpm'].version } })
+const BOOTSTRAP_EXE_PACKAGE_JSON = JSON.stringify({ private: true, dependencies: { '@pnpm/exe': exeLock.packages['node_modules/@pnpm/exe'].version } })
 
 export async function runSelfInstaller(inputs: Inputs): Promise<number> {
-  const { version, dest } = inputs
+  const { version, dest, packageJsonFile, standalone } = inputs
-  const target = version ? `pnpm@${version}` : 'pnpm'
-  const pkgJson = join(dest, 'package.json')
 
-  await remove(dest)
+  // Install bootstrap pnpm via npm (integrity verified by committed lockfile)
-  await ensureFile(pkgJson)
+  await rm(dest, { recursive: true, force: true })
-  await writeFile(pkgJson, JSON.stringify({ private: true }))
+  await mkdir(dest, { recursive: true })
 
-  const cp = spawn(execPath, ['-', 'install', target, '--no-lockfile'], {
+  const lockfile = standalone ? exeLock : pnpmLock
-    cwd: dest,
+  const packageJson = standalone ? BOOTSTRAP_EXE_PACKAGE_JSON : BOOTSTRAP_PNPM_PACKAGE_JSON
-    stdio: ['pipe', 'inherit', 'inherit'],
+  await writeFile(path.join(dest, 'package.json'), packageJson)
-  })
+  await writeFile(path.join(dest, 'package-lock.json'), JSON.stringify(lockfile))
 
-  const response = await fetch('https://pnpm.js.org/pnpm.js')
+  const npmExitCode = await runCommand('npm', ['ci'], { cwd: dest })
-  response.body.pipe(cp.stdin)
+  if (npmExitCode !== 0) {
+    return npmExitCode
+  }
 
-  return new Promise((resolve, reject) => {
+  const pnpmHome = path.join(dest, 'node_modules', '.bin')
+  addPath(pnpmHome)
+  exportVariable('PNPM_HOME', pnpmHome)
+
+  const bootstrapPnpm = standalone
+    ? path.join(dest, 'node_modules', '@pnpm', 'exe', 'pnpm')
+    : path.join(dest, 'node_modules', 'pnpm', 'bin', 'pnpm.cjs')
+
+  // Determine the target version
+  const targetVersion = readTargetVersion({ version, packageJsonFile })
+
+  if (targetVersion) {
+    const cmd = standalone ? bootstrapPnpm : process.execPath
+    const args = standalone ? ['self-update', targetVersion] : [bootstrapPnpm, 'self-update', targetVersion]
+    const exitCode = await runCommand(cmd, args, { cwd: dest })
+    if (exitCode !== 0) {
+      return exitCode
+    }
+  }
+
+  return 0
+}
+
+function readTargetVersion(opts: {
+  readonly version?: string | undefined
+  readonly packageJsonFile: string
+}): string | undefined {
+  const { version, packageJsonFile } = opts
+  const { GITHUB_WORKSPACE } = process.env
+
+  let packageManager: unknown
+
+  if (GITHUB_WORKSPACE) {
+    try {
+      const content = readFileSync(path.join(GITHUB_WORKSPACE, packageJsonFile), 'utf8');
+      ({ packageManager } = packageJsonFile.endsWith(".yaml")
+        ? parseYaml(content, { merge: true })
+        : JSON.parse(content)
+      )
+    } catch (error: unknown) {
+      // Swallow error if package.json doesn't exist in root
+      if (!util.types.isNativeError(error) || !('code' in error) || error.code !== 'ENOENT') throw error
+    }
+  }
+
+  if (version) {
+    if (
+      typeof packageManager === 'string' &&
+      packageManager.startsWith('pnpm@') &&
+      packageManager.replace('pnpm@', '') !== version
+    ) {
+      throw new Error(`Multiple versions of pnpm specified:
+  - version ${version} in the GitHub Action config with the key "version"
+  - version ${packageManager} in the package.json with the key "packageManager"
+Remove one of these versions to avoid version mismatch errors like ERR_PNPM_BAD_PM_VERSION`)
+    }
+
+    return version
+  }
+
+  if (typeof packageManager === 'string' && packageManager.startsWith('pnpm@')) {
+    // pnpm will handle version management via packageManager field
+    return undefined
+  }
+
+  if (!GITHUB_WORKSPACE) {
+    throw new Error(`No workspace is found.
+If you've intended to let pnpm/action-setup read preferred pnpm version from the "packageManager" field in the package.json file,
+please run the actions/checkout before pnpm/action-setup.
+Otherwise, please specify the pnpm version in the action configuration.`)
+  }
+
+  throw new Error(`No pnpm version is specified.
+Please specify it by one of the following ways:
+  - in the GitHub Action config with the key "version"
+  - in the package.json with the key "packageManager"`)
+}
+
+function runCommand(cmd: string, args: string[], opts: { cwd: string }): Promise<number> {
+  return new Promise<number>((resolve, reject) => {
+    const cp = spawn(cmd, args, {
+      cwd: opts.cwd,
+      stdio: ['pipe', 'inherit', 'inherit'],
+      shell: process.platform === 'win32',
+    })
     cp.on('error', reject)
     cp.on('close', resolve)
   })

src/pnpm-install/index.ts

@@ -1,5 +1,5 @@
-import { spawnSync } from 'child_process'
 import { setFailed, startGroup, endGroup } from '@actions/core'
+import { spawnSync } from 'child_process'
 import { Inputs } from '../inputs'
 import { patchPnpmEnv } from '../utils'
 

src/pnpm-store-prune/index.ts

@@ -1,5 +1,5 @@
-import { spawnSync } from 'child_process'
 import { warning, startGroup, endGroup } from '@actions/core'
+import { spawnSync } from 'child_process'
 import { Inputs } from '../inputs'
 import { patchPnpmEnv } from '../utils'
 
@@ -13,7 +13,7 @@ export function pruneStore(inputs: Inputs) {
   const { error, status } = spawnSync('pnpm', ['store', 'prune'], {
     stdio: 'inherit',
     shell: true,
-    env: patchPnpmEnv(inputs)
+    env: patchPnpmEnv(inputs),
   })
   endGroup()
 

src/utils/index.ts

@@ -1,10 +1,10 @@
-import process from 'process'
 import path from 'path'
+import process from 'process'
 import { Inputs } from '../inputs'
 
 export const getBinDest = (inputs: Inputs): string => path.join(inputs.dest, 'node_modules', '.bin')
 
 export const patchPnpmEnv = (inputs: Inputs): NodeJS.ProcessEnv => ({
   ...process.env,
-  PATH: getBinDest(inputs) + path.delimiter + process.env.PATH
+  PATH: getBinDest(inputs) + path.delimiter + process.env.PATH,
 })

tsconfig.json

@@ -1,30 +1,19 @@
-
 {
   "compilerOptions": {
-    "target": "ES2018",
+    "target": "ES2022",
-    "module": "CommonJS",
+    "module": "ESNext",
-    "moduleResolution": "Node",
+    "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "lib": [
-      "ES2018",
+      "ES2023"
-      "ES2019",
-      "ES2020",
-      "ESNext"
     ],
-    "outDir": "./dist/tsc",
+    "noEmit": true,
-    "preserveConstEnums": true,
-    "incremental": false,
-    "declaration": true,
-    "sourceMap": true,
-    "importHelpers": false,
     "strict": true,
     "pretty": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "noImplicitReturns": true,
     "noFallthroughCasesInSwitch": true,
-    "esModuleInterop": true,
+    "esModuleInterop": true
-    "experimentalDecorators": true,
-    "emitDecoratorMetadata": true
   }
 }