build

.github/CODEOWNERS

@@ -1 +1 @@
-* @Azure/cloud-native-github-action-owners
+* @Azure/aks-atlanta

.github/dependabot.yml

@@ -1,18 +0,0 @@
-version: 2
-updates:
-   - package-ecosystem: npm
-     directory: /
-     schedule:
-        interval: weekly
-     groups:
-        actions:
-           patterns:
-              - '*'
-   - package-ecosystem: github-actions
-     directory: .github/workflows
-     schedule:
-        interval: weekly
-     groups:
-        actions:
-           patterns:
-              - '*'

.github/workflows/defaultLabels.yml

@@ -13,7 +13,7 @@ jobs:
 
       # Steps represent a sequence of tasks that will be executed as part of the job
       steps:
-         - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639 #v9.1.0
+         - uses: actions/stale@v9
            name: Setting issue as idle
            with:
               repo-token: ${{ secrets.GITHUB_TOKEN }}
@@ -24,7 +24,7 @@ jobs:
               operations-per-run: 100
               exempt-issue-labels: 'backlog'
 
-         - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639 #v9.1.0
+         - uses: actions/stale@v9
            name: Setting PR as idle
            with:
               repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/integration-tests.yml

@@ -15,7 +15,7 @@ jobs:
          PR_BASE_REF: ${{ github.event.pull_request.base.ref }}
       steps:
          - name: Check out repository
-           uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+           uses: actions/checkout@v4
          - name: npm install and build
            id: action-npm-build
            run: |

.github/workflows/prettify-code.yml

@@ -10,7 +10,9 @@ jobs:
       runs-on: ubuntu-latest
       steps:
          - name: Checkout Repository
-           uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+           uses: actions/checkout@v4
 
          - name: Enforce Prettier
-           run: npx prettier --check .
+           uses: actionsx/prettier@v3
+           with:
+              args: --check .

.github/workflows/release-pr.yml

@@ -13,6 +13,6 @@ jobs:
       permissions:
          actions: read
          contents: write
-      uses: Azure/action-release-workflows/.github/workflows/release_js_project.yaml@3c677ba5ab58f5c5c1a6f0cfb176b333b1f27405 # v1.0.3
+      uses: Azure/action-release-workflows/.github/workflows/release_js_project.yaml@a705b2ab6a3ee889f2b0d925ad0bd2f9eb733ce6
       with:
          changelogPath: ./CHANGELOG.md

.github/workflows/tag-and-draft.yml

@@ -7,4 +7,4 @@ on:
 
 jobs:
    tag-and-release:
-      uses: OliverMKing/javascript-release-workflow/.github/workflows/tag-and-release.yml@c753e1545b144562237cd1177a95bab21a785cff # main
+      uses: OliverMKing/javascript-release-workflow/.github/workflows/tag-and-release.yml@main

.github/workflows/unit-tests.yml

@@ -13,7 +13,7 @@ jobs:
    build: # make sure build/ci works properly
       runs-on: ubuntu-latest
       steps:
-         - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+         - uses: actions/checkout@v4
 
          - name: Run L0 tests.
            run: |

.gitignore

@@ -11,8 +11,6 @@ pids
 *.seed
 *.pid.lock
 
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
@@ -64,4 +62,3 @@ node_modules
 coverage
 
 # Transpiled JS
-lib/

.husky/pre-commit

@@ -1,7 +0,0 @@
-npm test
-npm run format-check || {
-  echo ""
-  echo "❌ Formatting check failed."
-  echo "💡 Run 'npm run format' or 'prettier --write .' to fix formatting issues."
-  exit 1
-}

CHANGELOG.md

@@ -1,15 +1,5 @@
 # Change Log
 
-## [4.3.0] - 2025-02-15
-
-- #152 feat: log when restoring from cache
-- #157 Dependencies Update
-- #137 Add dependabot
-
-## [4.2.0] - 2024-04-15
-
-- #124 Fix OS detection and download OS-native archive extension
-
 ## [4.1.0] - 2024-03-01
 
 -  #130 switches to use Helm published file to read latest version instead of using GitHub releases

README.md

@@ -7,7 +7,7 @@ Install a specific version of helm binary on the runner.
 Acceptable values are latest or any semantic version string like v3.5.0 Use this action in workflow to define which version of helm will be used. v2+ of this action only support Helm3.
 
 ```yaml
-- uses: azure/setup-helm@v4.3.0
+- uses: azure/setup-helm@v4.1.0
   with:
      version: '<version>' # default is latest (stable)
   id: install

package.json

@@ -1,36 +1,35 @@
 {
    "name": "setuphelm",
-   "version": "4.3.0",
+   "version": "4.1.0",
    "private": true,
    "description": "Setup helm",
    "author": "Anumita Shenoy",
    "license": "MIT",
    "dependencies": {
-      "@actions/core": "^1.11.1",
+      "@actions/core": "^1.10.0",
       "@actions/exec": "^1.1.1",
       "@actions/io": "^1.1.2",
-      "@actions/tool-cache": "2.0.2",
+      "@actions/tool-cache": "2.0.1",
-      "@octokit/action": "^8.0.2",
+      "@octokit/action": "^6.0.7",
-      "semver": "^7.7.2"
+      "ncc": "^0.3.6",
+      "semver": "^7.5.4"
    },
    "main": "lib/index.js",
    "scripts": {
       "prebuild": "npm i ncc",
-      "build": "ncc build src/index.ts -o lib",
+      "build": "ncc build src/run.ts -o lib",
       "test": "jest",
       "test-coverage": "jest --coverage",
       "format": "prettier --write .",
-      "format-check": "prettier --check .",
+      "format-check": "prettier --check ."
-      "prepare": "husky"
    },
    "devDependencies": {
-      "@types/jest": "^30.0.0",
+      "@types/jest": "^29.5.11",
-      "@types/node": "^24.0.13",
+      "@types/node": "^20.11.8",
-      "@vercel/ncc": "^0.38.3",
+      "@vercel/ncc": "^0.38.1",
-      "husky": "^9.1.7",
+      "jest": "^29.7.0",
-      "jest": "^30.0.4",
+      "prettier": "^3.2.5",
-      "prettier": "^3.6.2",
+      "ts-jest": "^29.1.2",
-      "ts-jest": "^29.4.0",
+      "typescript": "^5.3.3"
-      "typescript": "^5.8.3"
    }
 }

src/index.ts

@@ -1,4 +0,0 @@
-import {run} from './run'
-import * as core from '@actions/core'
-
-run().catch(core.setFailed)

src/run.test.ts

@@ -6,74 +6,84 @@ import * as path from 'path'
 import * as core from '@actions/core'
 
 describe('run.ts', () => {
-   const downloadBaseURL = 'https://test.tld'
-
-   // Cleanup mocks after each test to ensure that subsequent tests are not affected by the mocks.
-   afterEach(() => {
-      jest.restoreAllMocks()
-   })
-
    test('getExecutableExtension() - return .exe when os is Windows', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
 
       expect(run.getExecutableExtension()).toBe('.exe')
-      expect(os.platform).toHaveBeenCalled()
+      expect(os.type).toHaveBeenCalled()
    })
 
    test('getExecutableExtension() - return empty string for non-windows OS', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('darwin')
+      jest.spyOn(os, 'type').mockReturnValue('Darwin')
 
       expect(run.getExecutableExtension()).toBe('')
-      expect(os.platform).toHaveBeenCalled()
+      expect(os.type).toHaveBeenCalled()
    })
 
-   test('getHelmDownloadURL() - return the URL to download helm for Linux amd64', () => {
+   test('getHelmDownloadURL() - return the URL to download helm for Linux', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('linux')
+      const downloadBaseURL = 'https://test.tld'
-      jest.spyOn(os, 'arch').mockReturnValue('x64')
-      const expected = 'https://test.tld/helm-v3.8.0-linux-amd64.tar.gz'
 
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
+      jest.spyOn(os, 'type').mockReturnValue('Linux')
-      expect(os.platform).toHaveBeenCalled()
+      jest.spyOn(os, 'arch').mockReturnValueOnce('unknown')
+      const helmLinuxUrl = 'https://test.tld/helm-v3.8.0-linux-amd64.zip'
+
+      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(
+         helmLinuxUrl
+      )
+      expect(os.type).toHaveBeenCalled()
+      expect(os.arch).toHaveBeenCalled()
+
+      // arm64
+      jest.spyOn(os, 'type').mockReturnValue('Linux')
+      jest.spyOn(os, 'arch').mockReturnValueOnce('arm64')
+      const helmLinuxArm64Url = 'https://test.tld/helm-v3.8.0-linux-arm64.zip'
+
+      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(
+         helmLinuxArm64Url
+      )
+      expect(os.type).toHaveBeenCalled()
       expect(os.arch).toHaveBeenCalled()
    })
 
-   test('getHelmDownloadURL() - return the URL to download helm for Linux arm64', () => {
+   test('getHelmDownloadURL() - return the URL to download helm for Darwin', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('linux')
+      const downloadBaseURL = 'https://test.tld'
-      jest.spyOn(os, 'arch').mockReturnValue('arm64')
-      const expected = 'https://test.tld/helm-v3.8.0-linux-arm64.tar.gz'
 
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
+      jest.spyOn(os, 'type').mockReturnValue('Darwin')
-      expect(os.platform).toHaveBeenCalled()
+      jest.spyOn(os, 'arch').mockReturnValueOnce('unknown')
+      const helmDarwinUrl = 'https://test.tld/helm-v3.8.0-darwin-amd64.zip'
+
+      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(
+         helmDarwinUrl
+      )
+      expect(os.type).toHaveBeenCalled()
+      expect(os.arch).toHaveBeenCalled()
+
+      // arm64
+      jest.spyOn(os, 'type').mockReturnValue('Darwin')
+      jest.spyOn(os, 'arch').mockReturnValueOnce('arm64')
+      const helmDarwinArm64Url = 'https://test.tld/helm-v3.8.0-darwin-arm64.zip'
+
+      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(
+         helmDarwinArm64Url
+      )
+      expect(os.type).toHaveBeenCalled()
       expect(os.arch).toHaveBeenCalled()
    })
 
-   test('getHelmDownloadURL() - return the URL to download helm for Darwin x64', () => {
+   test('getValidVersion() - return version with v prepended', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('darwin')
+      expect(run.getValidVersion('3.8.0')).toBe('v3.8.0')
-      jest.spyOn(os, 'arch').mockReturnValue('x64')
-      const expected = 'https://test.tld/helm-v3.8.0-darwin-amd64.tar.gz'
-
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-      expect(os.arch).toHaveBeenCalled()
-   })
-
-   test('getHelmDownloadURL() - return the URL to download helm for Darwin arm64', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('darwin')
-      jest.spyOn(os, 'arch').mockReturnValue('arm64')
-      const expected = 'https://test.tld/helm-v3.8.0-darwin-arm64.tar.gz'
-
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
-      expect(os.platform).toHaveBeenCalled()
-      expect(os.arch).toHaveBeenCalled()
    })
 
    test('getHelmDownloadURL() - return the URL to download helm for Windows', () => {
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
+      const downloadBaseURL = 'https://test.tld'
-      jest.spyOn(os, 'arch').mockReturnValue('x64')
 
-      const expected = 'https://test.tld/helm-v3.8.0-windows-amd64.zip'
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
-      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(expected)
+
-      expect(os.platform).toHaveBeenCalled()
+      const helmWindowsUrl = 'https://test.tld/helm-v3.8.0-windows-amd64.zip'
+      expect(run.getHelmDownloadURL(downloadBaseURL, 'v3.8.0')).toBe(
+         helmWindowsUrl
+      )
+      expect(os.type).toHaveBeenCalled()
    })
 
    test('getLatestHelmVersion() - return the latest version of HELM', async () => {
@@ -91,30 +101,25 @@ describe('run.ts', () => {
       expect(await run.getLatestHelmVersion()).toBe('v3.13.3')
    })
 
-   test('getValidVersion() - return version with v prepended', () => {
-      expect(run.getValidVersion('3.8.0')).toBe('v3.8.0')
-   })
-
    test('walkSync() - return path to the all files matching fileToFind in dir', () => {
       jest.spyOn(fs, 'readdirSync').mockImplementation((file, _) => {
          if (file == 'mainFolder')
             return [
-               'file1' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file1' as unknown as fs.Dirent,
-               'file2' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file2' as unknown as fs.Dirent,
-               'folder1' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'folder1' as unknown as fs.Dirent,
-               'folder2' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
+               'folder2' as unknown as fs.Dirent
             ]
          if (file == path.join('mainFolder', 'folder1'))
             return [
-               'file11' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file11' as unknown as fs.Dirent,
-               'file12' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
+               'file12' as unknown as fs.Dirent
             ]
          if (file == path.join('mainFolder', 'folder2'))
             return [
-               'file21' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file21' as unknown as fs.Dirent,
-               'file22' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
+               'file22' as unknown as fs.Dirent
             ]
-         return []
       })
       jest.spyOn(core, 'debug').mockImplementation()
       jest.spyOn(fs, 'statSync').mockImplementation((file) => {
@@ -134,22 +139,21 @@ describe('run.ts', () => {
       jest.spyOn(fs, 'readdirSync').mockImplementation((file, _) => {
          if (file == 'mainFolder')
             return [
-               'file1' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file1' as unknown as fs.Dirent,
-               'file2' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file2' as unknown as fs.Dirent,
-               'folder1' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'folder1' as unknown as fs.Dirent,
-               'folder2' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
+               'folder2' as unknown as fs.Dirent
             ]
          if (file == path.join('mainFolder', 'folder1'))
             return [
-               'file11' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file11' as unknown as fs.Dirent,
-               'file12' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
+               'file12' as unknown as fs.Dirent
             ]
          if (file == path.join('mainFolder', 'folder2'))
             return [
-               'file21' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>,
+               'file21' as unknown as fs.Dirent,
-               'file22' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
+               'file22' as unknown as fs.Dirent
             ]
-         return []
       })
       jest.spyOn(core, 'debug').mockImplementation()
       jest.spyOn(fs, 'statSync').mockImplementation((file) => {
@@ -166,16 +170,14 @@ describe('run.ts', () => {
    test('findHelm() - change access permissions and find the helm in given directory', () => {
       jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
       jest.spyOn(fs, 'readdirSync').mockImplementation((file, _) => {
-         if (file == 'mainFolder')
+         if (file == 'mainFolder') return ['helm.exe' as unknown as fs.Dirent]
-            return ['helm.exe' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>]
-         return []
       })
       jest.spyOn(fs, 'statSync').mockImplementation((file) => {
          const isDirectory =
             (file as string).indexOf('folder') == -1 ? false : true
          return {isDirectory: () => isDirectory} as fs.Stats
       })
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
 
       expect(run.findHelm('mainFolder')).toBe(
          path.join('mainFolder', 'helm.exe')
@@ -186,13 +188,11 @@ describe('run.ts', () => {
       jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
       jest.spyOn(fs, 'readdirSync').mockImplementation((file, _) => {
          if (file == 'mainFolder') return []
-         return []
       })
       jest.spyOn(fs, 'statSync').mockImplementation((file) => {
          return {isDirectory: () => true} as fs.Stats
       })
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
-
       expect(() => run.findHelm('mainFolder')).toThrow(
          'Helm executable not found in path mainFolder'
       )
@@ -203,22 +203,24 @@ describe('run.ts', () => {
       jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool')
       const response = JSON.stringify([{tag_name: 'v4.0.0'}])
       jest.spyOn(fs, 'readFileSync').mockReturnValue(response)
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
       jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
-      jest.spyOn(toolCache, 'extractZip').mockResolvedValue('extractedPath')
+      jest
+         .spyOn(toolCache, 'extractZip')
+         .mockResolvedValue('pathToUnzippedHelm')
       jest.spyOn(toolCache, 'cacheDir').mockResolvedValue('pathToCachedDir')
       jest
          .spyOn(fs, 'readdirSync')
-         .mockImplementation((file, _) => [
+         .mockImplementation((file, _) => ['helm.exe' as unknown as fs.Dirent])
-            'helm.exe' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
-         ])
       jest.spyOn(fs, 'statSync').mockImplementation((file) => {
          const isDirectory =
             (file as string).indexOf('folder') == -1 ? false : true
          return {isDirectory: () => isDirectory} as fs.Stats
       })
 
-      expect(await run.downloadHelm(downloadBaseURL, 'v4.0.0')).toBe(
+      const baseURL = 'https://test.tld'
+
+      expect(await run.downloadHelm(baseURL, 'v4.0.0')).toBe(
          path.join('pathToCachedDir', 'helm.exe')
       )
       expect(toolCache.find).toHaveBeenCalledWith('helm', 'v4.0.0')
@@ -238,35 +240,26 @@ describe('run.ts', () => {
       jest.spyOn(toolCache, 'downloadTool').mockImplementation(async () => {
          throw 'Unable to download'
       })
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
 
-      const downloadUrl = 'https://test.tld/helm-v3.2.1-windows-amd64.zip'
+      const baseURL = 'https://test.tld'
-      await expect(run.downloadHelm(downloadBaseURL, 'v3.2.1')).rejects.toThrow(
+
-         `Failed to download Helm from location ${downloadUrl}`
+      await expect(run.downloadHelm(baseURL, 'v3.2.1')).rejects.toThrow(
+         'Failed to download Helm from location https://test.tld/helm-v3.2.1-windows-amd64.zip'
       )
       expect(toolCache.find).toHaveBeenCalledWith('helm', 'v3.2.1')
-      expect(toolCache.downloadTool).toHaveBeenCalledWith(`${downloadUrl}`)
+      expect(toolCache.downloadTool).toHaveBeenCalledWith(
+         'https://test.tld/helm-v3.2.1-windows-amd64.zip'
+      )
    })
 
    test('downloadHelm() - return path to helm tool with same version from toolCache', async () => {
       jest.spyOn(toolCache, 'find').mockReturnValue('pathToCachedDir')
-      jest.spyOn(toolCache, 'cacheDir').mockResolvedValue('pathToCachedDir')
-      jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool')
-      jest.spyOn(toolCache, 'extractZip').mockResolvedValue('extractedPath')
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
       jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
-      jest
-         .spyOn(fs, 'readdirSync')
-         .mockReturnValue([
-            'helm.exe' as unknown as fs.Dirent<Buffer<ArrayBufferLike>>
-         ])
-      jest.spyOn(fs, 'statSync').mockImplementation((file) => {
-         const isDirectory =
-            (file as string).indexOf('folder') == -1 ? false : true
-         return {isDirectory: () => isDirectory} as fs.Stats
-      })
 
-      expect(await run.downloadHelm(downloadBaseURL, 'v3.2.1')).toBe(
+      const baseURL = 'https://test.tld'
+
+      expect(await run.downloadHelm(baseURL, 'v3.2.1')).toBe(
          path.join('pathToCachedDir', 'helm.exe')
       )
       expect(toolCache.find).toHaveBeenCalledWith('helm', 'v3.2.1')
@@ -279,11 +272,12 @@ describe('run.ts', () => {
    test('downloadHelm() - throw error is helm is not found in path', async () => {
       jest.spyOn(toolCache, 'find').mockReturnValue('')
       jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool')
-      jest.spyOn(toolCache, 'cacheDir').mockResolvedValue('pathToCachedDir')
+      jest.spyOn(os, 'type').mockReturnValue('Windows_NT')
-      jest.spyOn(toolCache, 'downloadTool').mockResolvedValue('pathToTool')
-      jest.spyOn(toolCache, 'extractZip').mockResolvedValue('extractedPath')
-      jest.spyOn(os, 'platform').mockReturnValue('win32')
       jest.spyOn(fs, 'chmodSync').mockImplementation()
+      jest
+         .spyOn(toolCache, 'extractZip')
+         .mockResolvedValue('pathToUnzippedHelm')
+      jest.spyOn(toolCache, 'cacheDir').mockResolvedValue('pathToCachedDir')
       jest.spyOn(fs, 'readdirSync').mockImplementation((file, _) => [])
       jest.spyOn(fs, 'statSync').mockImplementation((file) => {
          const isDirectory =
@@ -291,7 +285,9 @@ describe('run.ts', () => {
          return {isDirectory: () => isDirectory} as fs.Stats
       })
 
-      await expect(run.downloadHelm(downloadBaseURL, 'v3.2.1')).rejects.toThrow(
+      const baseURL = 'https://test.tld'
+
+      await expect(run.downloadHelm(baseURL, 'v3.2.1')).rejects.toThrow(
          'Helm executable not found in path pathToCachedDir'
       )
       expect(toolCache.find).toHaveBeenCalledWith('helm', 'v3.2.1')

src/run.ts

@@ -1,4 +1,5 @@
 // Copyright (c) Microsoft Corporation.
+// Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
 import * as os from 'os'
@@ -25,7 +26,7 @@ export async function run() {
 
    const downloadBaseURL = core.getInput('downloadBaseURL', {required: false})
 
-   core.startGroup(`Installing ${version}`)
+   core.startGroup(`Downloading ${version}`)
    const cachedPath = await downloadHelm(downloadBaseURL, version)
    core.endGroup()
 
@@ -60,24 +61,41 @@ export async function getLatestHelmVersion(): Promise<string> {
    }
 }
 
-export function getArch(): string {
-   return os.arch() === 'x64' ? 'amd64' : os.arch()
-}
-
-export function getPlatform(): string {
-   return os.platform() === 'win32' ? 'windows' : os.platform()
-}
-
-export function getArchiveExtension(): string {
-   return os.platform() === 'win32' ? 'zip' : 'tar.gz'
-}
-
 export function getExecutableExtension(): string {
-   return os.platform() === 'win32' ? '.exe' : ''
+   if (os.type().match(/^Win/)) {
+      return '.exe'
+   }
+   return ''
 }
 
+const LINUX = 'Linux'
+const MAC_OS = 'Darwin'
+const WINDOWS = 'Windows_NT'
+const ARM64 = 'arm64'
 export function getHelmDownloadURL(baseURL: string, version: string): string {
-   const urlPath = `helm-${version}-${getPlatform()}-${getArch()}.${getArchiveExtension()}`
+   const arch = os.arch()
+   const operatingSystem = os.type()
+
+   let urlPath = ''
+
+   switch (true) {
+      case operatingSystem == LINUX && arch == ARM64:
+         urlPath = util.format(`/helm-%s-linux-arm64.zip`, version)
+         break
+      case operatingSystem == LINUX:
+         urlPath = util.format(`/helm-%s-linux-amd64.zip`, version)
+         break
+      case operatingSystem == MAC_OS && arch == ARM64:
+         urlPath = util.format(`/helm-%s-darwin-arm64.zip`, version)
+         break
+      case operatingSystem == MAC_OS:
+         urlPath = util.format(`/helm-%s-darwin-amd64.zip`, version)
+         break
+      case operatingSystem == WINDOWS:
+      default:
+         urlPath = util.format(`/helm-%s-windows-amd64.zip`, version)
+   }
+
    const url = new URL(urlPath, baseURL)
    return url.toString()
 }
@@ -87,10 +105,7 @@ export async function downloadHelm(
    version: string
 ): Promise<string> {
    let cachedToolpath = toolCache.find(helmToolName, version)
-   if (cachedToolpath) {
+   if (!cachedToolpath) {
-      core.info(`Restoring '${version}' from cache`)
-   } else {
-      core.info(`Downloading '${version}' from '${baseURL}'`)
       let helmDownloadPath
       try {
          helmDownloadPath = await toolCache.downloadTool(
@@ -106,13 +121,9 @@ export async function downloadHelm(
       }
 
       fs.chmodSync(helmDownloadPath, '777')
-      const extractedPath =
+      const unzipedHelmPath = await toolCache.extractZip(helmDownloadPath)
-         getPlatform() === 'windows'
-            ? await toolCache.extractZip(helmDownloadPath)
-            : await toolCache.extractTar(helmDownloadPath)
-
       cachedToolpath = await toolCache.cacheDir(
-         extractedPath,
+         unzipedHelmPath,
          helmToolName,
          version
       )
@@ -157,3 +168,5 @@ export var walkSync = function (dir, filelist, fileToFind) {
    })
    return filelist
 }
+
+run().catch(core.setFailed)