build

.github/workflows/codeql.yml

@@ -55,11 +55,11 @@ jobs:
             # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
       steps:
          - name: Checkout repository
-           uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+           uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
          # Initializes the CodeQL tools for scanning.
          - name: Initialize CodeQL
-           uses: github/codeql-action/init@c10b8064de6f491fea524254123dbe5e09572f13 # v3.29.5
+           uses: github/codeql-action/init@0499de31b99561a6d14a36a5f662c2a54f91beee # v3.29.5
            with:
               languages: ${{ matrix.language }}
               build-mode: ${{ matrix.build-mode }}
@@ -86,6 +86,6 @@ jobs:
               echo '  make release'
               exit 1
          - name: Perform CodeQL Analysis
-           uses: github/codeql-action/analyze@c10b8064de6f491fea524254123dbe5e09572f13 # v3.29.5
+           uses: github/codeql-action/analyze@0499de31b99561a6d14a36a5f662c2a54f91beee # v3.29.5
            with:
               category: '/language:${{matrix.language}}'

.github/workflows/default-labels.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@b5d41d4e1d5dceea10e7104786b73624c18a190f # v10.2.0
+         - uses: actions/stale@5f858e3efba33a5ca4407a664cc011ad407f2008 # v10.1.0
            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@b5d41d4e1d5dceea10e7104786b73624c18a190f # v10.2.0
+         - uses: actions/stale@5f858e3efba33a5ca4407a664cc011ad407f2008 # v10.1.0
            name: Setting PR as Idle
            with:
               repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/integration-tests.yml

@@ -15,7 +15,7 @@ jobs:
       steps:
          - name: Checkout Source Code
            id: checkout-code
-           uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+           uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
          - name: Npm Install and Build
            id: npm-build
            run: |

.github/workflows/prettify-code.yml

@@ -10,10 +10,10 @@ jobs:
       runs-on: ubuntu-latest
       steps:
          - name: Checkout Repository
-           uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+           uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
 
          - name: Setup Node.js
-           uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+           uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
            with:
               node-version: 'lts/*'
               cache: 'npm'

.github/workflows/unit-tests.yml

@@ -13,7 +13,7 @@ jobs:
    unit-test:
       runs-on: ubuntu-latest
       steps:
-         - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+         - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
          - name: Run Unit Tests
            run: |
               npm install

.gitignore

@@ -331,4 +331,3 @@ node_modules
 coverage
 
 # Transpiled JS
-lib/

CHANGELOG.md

@@ -1,44 +1,5 @@
 # Change Log
 
-## [5.0.0] - 2026-04-07
-
-### Features
-
-- #227 Migrate to ESM with esbuild, vitest
-
-### Runtime and platform
-
-- #222 Update Node version from 20 to 24
-
-### Dependabot updates
-
-- #231 Bump github/codeql-action in /.github/workflows in the actions group
-- #230 Bump typescript in the actions group across 1 directory
-- #228 Bump picomatch
-- #226 Bump github/codeql-action in /.github/workflows in the actions group
-- #223 Bump undici from 6.23.0 to 6.24.0
-- #221 Bump the actions group in /.github/workflows with 2 updates
-- #218 Bump the actions group in /.github/workflows with 2 updates
-- #219 Bump minimatch
-- #217 Bump undici and @actions/http-client
-- #216 Bump github/codeql-action in /.github/workflows in the actions group
-- #214 Bump the actions group in /.github/workflows with 2 updates
-- #212 Bump the actions group in /.github/workflows with 2 updates
-- #211 Bump the actions group with 3 updates
-- #210 Bump the actions group with 2 updates
-- #208 Bump @types/node from 25.0.2 to 25.0.3 in the actions group
-- #209 Bump github/codeql-action in /.github/workflows in the actions group
-- #206 Bump the actions group with 3 updates
-- #207 Bump github/codeql-action in /.github/workflows in the actions group
-- #205 Bump the actions group in /.github/workflows with 4 updates
-- #204 Bump the actions group with 2 updates
-- #202 Bump the actions group in /.github/workflows with 2 updates
-- #203 Bump prettier from 3.6.2 to 3.7.3 in the actions group
-- #201 Bump glob from 10.4.5 to 10.5.0
-- #200 Bump js-yaml from 3.14.1 to 3.14.2
-- #198 Bump js-yaml from 4.1.0 to 4.1.1
-- #199 Bump the actions group with 2 updates
-
 ## [4.0.2] - 2025-11-13
 
 - #[164](https://github.com/Azure/k8s-set-context/pull/164) Adding optional kubeconfig encoding variable

README.md

@@ -19,7 +19,7 @@ Refer to the [action metadata file](./action.yml) for details about inputs. Note
 ### Kubeconfig approach
 
 ```yaml
-- uses: azure/k8s-set-context@v5
+- uses: azure/k8s-set-context@v4
   with:
      method: kubeconfig
      kubeconfig: <your kubeconfig>
@@ -50,7 +50,7 @@ Please refer to documentation on fetching [kubeconfig for any generic K8s cluste
 ### Service account approach
 
 ```yaml
-- uses: azure/k8s-set-context@v5
+- uses: azure/k8s-set-context@v4
   with:
      method: service-account
      k8s-url: <URL of the cluster's API server>
@@ -74,7 +74,7 @@ kubectl get secret <service-account-secret-name> -n <namespace> -o yaml
 ### Service account approach for arc cluster
 
 ```yaml
-- uses: azure/k8s-set-context@v5
+- uses: azure/k8s-set-context@v4
   with:
      method: service-account
      cluster-type: arc
@@ -86,7 +86,7 @@ kubectl get secret <service-account-secret-name> -n <namespace> -o yaml
 ### Service principal approach for arc cluster
 
 ```yaml
-- uses: azure/k8s-set-context@v5
+- uses: azure/k8s-set-context@v4
   with:
      method: service-principal
      cluster-type: arc

action.yml

@@ -39,5 +39,5 @@ inputs:
 branding:
    color: 'blue'
 runs:
-   using: 'node24'
+   using: 'node20'
    main: 'lib/index.js'

babel.config.js

@@ -0,0 +1,7 @@
+// babel.config.js
+export default {
+   presets: [
+      '@babel/preset-env', // For handling ES modules
+      '@babel/preset-typescript' // For handling TypeScript
+   ]
+}

jest.config.js

@@ -0,0 +1,28 @@
+export default {
+   restoreMocks: true,
+   clearMocks: true,
+   resetMocks: true,
+   moduleFileExtensions: ['js', 'ts'],
+   testEnvironment: 'node',
+   testMatch: ['**/*.test.ts'],
+   transform: {
+      '^.+\\.ts$': 'ts-jest', // Use ts-jest for TypeScript files
+      '^.+\\.js$': 'babel-jest' // Transform TypeScript files
+   },
+   transformIgnorePatterns: [
+      '/node_modules/(?!@kubernetes/client-node)/' // Make sure to transform the Kubernetes client module
+   ],
+   moduleNameMapper: {
+      '^.+\\.css$': 'jest-transform-stub' // Handle CSS imports (if any)
+   },
+   extensionsToTreatAsEsm: ['.ts', '.tsx'], // Treat TypeScript files as ESM
+   verbose: true,
+   coverageThreshold: {
+      global: {
+         branches: 0,
+         functions: 40,
+         lines: 22,
+         statements: 22
+      }
+   }
+}

lib/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

package.json

@@ -1,14 +1,14 @@
 {
    "name": "k8s-set-context-action",
-   "version": "5.0.0",
+   "version": "4.0.2",
    "private": true,
    "main": "lib/index.js",
    "type": "module",
    "scripts": {
-      "build": "tsc --noEmit && esbuild src/run.ts --bundle --platform=node --target=node20 --format=esm --outfile=lib/index.js --banner:js=\"import { createRequire } from 'module';const require = createRequire(import.meta.url);\"",
+      "prebuild": "npm i @vercel/ncc",
-      "typecheck": "tsc --noEmit",
+      "build": "ncc build src/run.ts -o lib",
-      "test": "vitest run",
+      "test": "jest",
-      "test-coverage": "vitest run --coverage",
+      "test-coverage": "jest --coverage",
       "format": "prettier --write .",
       "format-check": "prettier --check .",
       "prepare": "husky"
@@ -21,19 +21,24 @@
    "author": "GitHub",
    "license": "MIT",
    "dependencies": {
-      "@actions/core": "^3.0.0",
+      "@actions/core": "^1.11.1",
-      "@actions/exec": "^3.0.0",
+      "@actions/exec": "^1.1.1",
-      "@actions/io": "^3.0.2",
+      "@actions/io": "^2.0.0",
       "@kubernetes/client-node": "^1.4.0",
       "husky": "^9.1.7",
-      "js-yaml": "^4.1.1"
+      "js-yaml": "^4.1.0"
    },
    "devDependencies": {
+      "@babel/preset-env": "^7.28.5",
+      "@babel/preset-typescript": "^7.28.5",
+      "@types/jest": "^30.0.0",
       "@types/js-yaml": "^4.0.9",
-      "@types/node": "^25.5.2",
+      "@types/node": "^24.9.2",
-      "esbuild": "^0.28.0",
+      "@vercel/ncc": "^0.38.4",
-      "prettier": "^3.8.0",
+      "babel-jest": "^30.2.0",
-      "typescript": "^6.0.2",
+      "jest": "^30.2.0",
-      "vitest": "^4.1.1"
+      "prettier": "^3.6.2",
+      "ts-jest": "^29.4.5",
+      "typescript": "^5.9.3"
    }
 }

src/action.test.ts

@@ -1,9 +1,7 @@
-import {vi, describe, it, expect} from 'vitest'
+import {getRequiredInputError} from '../tests/util'
-import {getRequiredInputError} from '../tests/util.js'
+import {run} from './action'
-import {run} from './action.js'
+import fs from 'fs'
-
+import * as utils from './utils'
-vi.mock('fs')
-vi.mock('./utils.js')
 
 describe('Run', () => {
    it('throws error without cluster type', async () => {
@@ -11,23 +9,22 @@ describe('Run', () => {
    })
 
    it('writes kubeconfig and sets context', async () => {
-      const {getKubeconfig, setContext} = await import('./utils.js')
-      const fs = await import('fs')
       const kubeconfig = 'kubeconfig'
 
       process.env['INPUT_CLUSTER-TYPE'] = 'default'
       process.env['RUNNER_TEMP'] = '/sample/path'
 
-      vi.mocked(getKubeconfig).mockResolvedValue(kubeconfig)
+      jest
-      vi.mocked(setContext).mockReturnValue(kubeconfig)
+         .spyOn(utils, 'getKubeconfig')
-      vi.mocked(fs.writeFileSync).mockImplementation(() => {})
+         .mockImplementation(async () => kubeconfig)
-      vi.mocked(fs.chmodSync).mockImplementation(() => {})
+      jest.spyOn(fs, 'writeFileSync').mockImplementation(() => {})
+      jest.spyOn(fs, 'chmodSync').mockImplementation(() => {})
+      jest.spyOn(utils, 'setContext').mockImplementation(() => kubeconfig)
 
-      await run()
+      expect(await run())
-
+      expect(utils.getKubeconfig).toHaveBeenCalled()
-      expect(getKubeconfig).toHaveBeenCalled()
       expect(fs.writeFileSync).toHaveBeenCalled()
       expect(fs.chmodSync).toHaveBeenCalled()
-      expect(setContext).toHaveBeenCalled()
+      expect(utils.setContext).toHaveBeenCalled()
    })
 })

src/action.ts

@@ -1,8 +1,8 @@
 import * as core from '@actions/core'
 import * as path from 'path'
 import * as fs from 'fs'
-import {Cluster, parseCluster} from './types/cluster.js'
+import {Cluster, parseCluster} from './types/cluster'
-import {setContext, getKubeconfig} from './utils.js'
+import {setContext, getKubeconfig} from './utils'
 
 /**
  * Sets the Kubernetes context based on supplied action inputs
@@ -14,7 +14,7 @@ export async function run() {
          required: true
       })
    )
-   const runnerTempDirectory: string = process.env['RUNNER_TEMP'] ?? ''
+   const runnerTempDirectory: string = process.env['RUNNER_TEMP']
    const kubeconfigPath: string = path.join(
       runnerTempDirectory,
       `kubeconfig_${Date.now()}`

src/kubeconfigs/arc.test.ts

@@ -1,11 +1,8 @@
-import {vi, describe, test, it, expect, beforeEach} from 'vitest'
+import * as actions from '@actions/exec'
 import * as io from '@actions/io'
-import {getRequiredInputError} from '../../tests/util.js'
+import {getRequiredInputError} from '../../tests/util'
-import {getArcKubeconfig, KUBECONFIG_LOCATION} from './arc.js'
+import {getArcKubeconfig, KUBECONFIG_LOCATION} from './arc'
-import * as az from './azCommands.js'
+import * as az from './azCommands'
-
-vi.mock('@actions/io')
-vi.mock('./azCommands.js')
 
 describe('Arc kubeconfig', () => {
    test('it throws error without resource group', async () => {
@@ -31,11 +28,11 @@ describe('Arc kubeconfig', () => {
          process.env['INPUT_RESOURCE-GROUP'] = group
          process.env['INPUT_CLUSTER-NAME'] = name
 
-         vi.mocked(io.which).mockResolvedValue(path)
+         jest.spyOn(io, 'which').mockImplementation(async () => path)
-         vi.mocked(az.runAzCliCommand).mockResolvedValue(undefined)
+         jest.spyOn(az, 'runAzCliCommand').mockImplementation(async () => {})
-         vi.mocked(az.runAzKubeconfigCommandBlocking).mockResolvedValue(
+         jest
-            kubeconfig
+            .spyOn(az, 'runAzKubeconfigCommandBlocking')
-         )
+            .mockImplementation(async () => kubeconfig)
       })
 
       it('throws an error without method', async () => {

src/kubeconfigs/arc.ts

@@ -1,8 +1,8 @@
 import * as core from '@actions/core'
 import * as io from '@actions/io'
-import {Method, parseMethod} from '../types/method.js'
+import {Method, parseMethod} from '../types/method'
 import * as path from 'path'
-import {runAzCliCommand, runAzKubeconfigCommandBlocking} from './azCommands.js'
+import {runAzCliCommand, runAzKubeconfigCommandBlocking} from './azCommands'
 
 const RUNNER_TEMP: string = process.env['RUNNER_TEMP'] || ''
 export const KUBECONFIG_LOCATION: string = path.join(

src/kubeconfigs/azCommands.test.ts

@@ -1,17 +1,14 @@
-import {vi, describe, test, expect, beforeEach} from 'vitest'
 import * as actions from '@actions/exec'
-import {runAzCliCommand} from './azCommands.js'
+import {runAzCliCommand} from './azCommands'
-
-vi.mock('@actions/exec')
 
 describe('Az commands', () => {
    test('it runs an az cli command', async () => {
       const path = 'path'
       const args = ['args']
 
-      vi.mocked(actions.exec).mockResolvedValue(0)
+      jest.spyOn(actions, 'exec').mockImplementation(async () => 0)
 
-      await runAzCliCommand(path, args)
+      expect(await runAzCliCommand(path, args))
       expect(actions.exec).toHaveBeenCalledWith(path, args, {})
    })
 })

src/kubeconfigs/azCommands.ts

@@ -1,5 +1,6 @@
 import * as fs from 'fs'
-import {ExecOptions, exec} from '@actions/exec'
+import {ExecOptions} from '@actions/exec/lib/interfaces'
+import {exec} from '@actions/exec'
 import {spawn} from 'child_process'
 
 const AZ_TIMEOUT_SECONDS: number = 120

src/kubeconfigs/default.test.ts

@@ -1,7 +1,7 @@
-import {vi, describe, test, expect, beforeEach, afterEach} from 'vitest'
 import * as fs from 'fs'
-import {getRequiredInputError} from '../../tests/util.js'
+import * as core from '@actions/core'
-import {createKubeconfig, getDefaultKubeconfig} from './default.js'
+import {getRequiredInputError} from '../../tests/util'
+import {createKubeconfig, getDefaultKubeconfig} from './default'
 
 describe('Default kubeconfig', () => {
    test('it creates a kubeconfig with proper format', () => {
@@ -51,11 +51,6 @@ describe('Default kubeconfig', () => {
          process.env['INPUT_METHOD'] = 'default'
       })
 
-      afterEach(() => {
-         delete process.env['INPUT_KUBECONFIG']
-         delete process.env['INPUT_KUBECONFIG-ENCODING']
-      })
-
       test('it throws error without kubeconfig', () => {
          expect(() => getDefaultKubeconfig()).toThrow(
             getRequiredInputError('kubeconfig')
@@ -71,25 +66,39 @@ describe('Default kubeconfig', () => {
 
       test('returns kubeconfig as plaintext when encoding is plaintext', () => {
          const kc = 'example kc'
-         process.env['INPUT_KUBECONFIG'] = kc
+         jest.spyOn(core, 'getInput').mockImplementation((name: string) => {
-         process.env['INPUT_KUBECONFIG-ENCODING'] = 'plaintext'
+            if (name === 'method') return 'default'
-
+            if (name === 'kubeconfig-encoding') return 'plaintext'
+            if (name === 'kubeconfig') return kc
+            return ''
+         })
          expect(getDefaultKubeconfig()).toBe(kc)
       })
 
       test('it gets default config through base64 kubeconfig input', () => {
          const kc = 'example kc'
          const base64Kc = Buffer.from(kc, 'utf-8').toString('base64')
-         process.env['INPUT_KUBECONFIG'] = base64Kc
+
-         process.env['INPUT_KUBECONFIG-ENCODING'] = 'base64'
+         jest.spyOn(core, 'getInput').mockImplementation((name: string) => {
+            if (name === 'method') return 'default'
+            if (name === 'kubeconfig-encoding') return 'base64'
+            if (name === 'kubeconfig') return base64Kc
+            return ''
+         })
 
          expect(getDefaultKubeconfig()).toBe(kc)
       })
 
       test('it throws error for unknown kubeconfig-encoding', () => {
          const kc = 'example kc'
-         process.env['INPUT_KUBECONFIG'] = kc
+         const unknownEncoding = 'foobar'
-         process.env['INPUT_KUBECONFIG-ENCODING'] = 'foobar'
+
+         jest.spyOn(core, 'getInput').mockImplementation((name: string) => {
+            if (name === 'method') return 'default'
+            if (name === 'kubeconfig-encoding') return unknownEncoding
+            if (name === 'kubeconfig') return kc
+            return ''
+         })
 
          expect(() => getDefaultKubeconfig()).toThrow(
             "Invalid kubeconfig-encoding: 'foobar'. Must be 'plaintext' or 'base64'."

src/kubeconfigs/default.ts

@@ -1,8 +1,8 @@
 import * as core from '@actions/core'
 import * as jsyaml from 'js-yaml'
 import {KubeConfig} from '@kubernetes/client-node'
-import {K8sSecret, parseK8sSecret} from '../types/k8sSecret.js'
+import {K8sSecret, parseK8sSecret} from '../types/k8sSecret'
-import {Method, parseMethod} from '../types/method.js'
+import {Method, parseMethod} from '../types/method'
 
 /**
  * Gets the kubeconfig based on provided method for a default Kubernetes cluster

src/run.ts

@@ -1,4 +1,4 @@
-import {run} from './action.js'
+import {run} from './action'
 import * as core from '@actions/core'
 
 // Run the application

src/types/cluster.test.ts

@@ -1,9 +1,8 @@
-import {describe, test, expect} from 'vitest'
+import {Cluster, parseCluster} from './cluster'
-import {Cluster, parseCluster} from './cluster.js'
 
 describe('Cluster type', () => {
    test('it has required values', () => {
-      const vals = Object.values(Cluster) as string[]
+      const vals = <any>Object.values(Cluster)
       expect(vals.includes('arc')).toBe(true)
       expect(vals.includes('generic')).toBe(true)
    })

src/types/cluster.ts

@@ -8,10 +8,9 @@ export enum Cluster {
  * @param str The cluster type (case insensitive)
  * @returns The Cluster enum or undefined if it can't be parsed
  */
-export const parseCluster = (str: string): Cluster | undefined => {
+export const parseCluster = (str: string): Cluster | undefined =>
-   const key = Object.keys(Cluster).find(
+   Cluster[
-      (k) =>
+      Object.keys(Cluster).filter(
-         Cluster[k as keyof typeof Cluster].toLowerCase() === str.toLowerCase()
+         (k) => Cluster[k].toString().toLowerCase() === str.toLowerCase()
-   ) as keyof typeof Cluster | undefined
+      )[0] as keyof typeof Cluster
-   return key !== undefined ? Cluster[key] : undefined
+   ]
-}

src/types/k8sSecret.test.ts

@@ -1,5 +1,4 @@
-import {describe, test, expect} from 'vitest'
+import {parseK8sSecret, K8sSecret} from './k8sSecret'
-import {parseK8sSecret} from './k8sSecret.js'
 
 describe('K8sSecret type', () => {
    describe('Parsing from any', () => {

src/types/method.test.ts

@@ -1,9 +1,8 @@
-import {describe, test, expect} from 'vitest'
+import {Method, parseMethod} from './method'
-import {Method, parseMethod} from './method.js'
 
 describe('Method type', () => {
    test('it has required values', () => {
-      const vals = Object.values(Method) as string[]
+      const vals = <any>Object.values(Method)
       expect(vals.includes('kubeconfig')).toBe(true)
       expect(vals.includes('service-account')).toBe(true)
       expect(vals.includes('service-principal')).toBe(true)

src/types/method.ts

@@ -9,10 +9,9 @@ export enum Method {
  * @param str The method (case insensitive)
  * @returns The Method enum or undefined if it can't be parsed
  */
-export const parseMethod = (str: string): Method | undefined => {
+export const parseMethod = (str: string): Method | undefined =>
-   const key = Object.keys(Method).find(
+   Method[
-      (k) =>
+      Object.keys(Method).filter(
-         Method[k as keyof typeof Method].toLowerCase() === str.toLowerCase()
+         (k) => Method[k].toString().toLowerCase() === str.toLowerCase()
-   ) as keyof typeof Method | undefined
+      )[0] as keyof typeof Method
-   return key !== undefined ? Method[key] : undefined
+   ]
-}

src/utils.test.ts

@@ -1,26 +1,25 @@
-import {vi, describe, test, expect} from 'vitest'
 import fs from 'fs'
-import * as arc from './kubeconfigs/arc.js'
+import * as arc from './kubeconfigs/arc'
-import * as def from './kubeconfigs/default.js'
+import * as def from './kubeconfigs/default'
-import {Cluster} from './types/cluster.js'
+import {Cluster} from './types/cluster'
-import {getKubeconfig, setContext} from './utils.js'
+import {getKubeconfig, setContext} from './utils'
 
 describe('Utils', () => {
    describe('get kubeconfig', () => {
       test('it gets arc kubeconfig when type is arc', async () => {
          const arcKubeconfig = 'arckubeconfig'
-         vi.spyOn(arc, 'getArcKubeconfig').mockImplementation(
+         jest
-            async () => arcKubeconfig
+            .spyOn(arc, 'getArcKubeconfig')
-         )
+            .mockImplementation(async () => arcKubeconfig)
 
          expect(await getKubeconfig(Cluster.ARC)).toBe(arcKubeconfig)
       })
 
       test('it defaults to default kubeconfig', async () => {
          const defaultKubeconfig = 'arckubeconfig'
-         vi.spyOn(def, 'getDefaultKubeconfig').mockImplementation(
+         jest
-            () => defaultKubeconfig
+            .spyOn(def, 'getDefaultKubeconfig')
-         )
+            .mockImplementation(() => defaultKubeconfig)
 
          expect(await getKubeconfig(undefined)).toBe(defaultKubeconfig)
          expect(await getKubeconfig(Cluster.GENERIC)).toBe(defaultKubeconfig)

src/utils.ts

@@ -1,9 +1,9 @@
 import * as core from '@actions/core'
 import * as fs from 'fs'
 import {KubeConfig} from '@kubernetes/client-node'
-import {getDefaultKubeconfig} from './kubeconfigs/default.js'
+import {getDefaultKubeconfig} from './kubeconfigs/default'
-import {getArcKubeconfig} from './kubeconfigs/arc.js'
+import {getArcKubeconfig} from './kubeconfigs/arc'
-import {Cluster} from './types/cluster.js'
+import {Cluster} from './types/cluster'
 
 /**
  * Gets the kubeconfig based on Kubernetes cluster type

tsconfig.json

@@ -1,14 +1,15 @@
 {
    "compilerOptions": {
-      "target": "ES2020",
+      "baseUrl": ".",
-      "module": "NodeNext",
+      "module": "ESNext", // or "NodeNext" depending on your setup
-      "moduleResolution": "NodeNext",
+      "moduleResolution": "node",
-      "rootDir": "./src",
+      "esModuleInterop": true,
-      "outDir": "./lib",
+      "allowSyntheticDefaultImports": true,
-      "noImplicitAny": false,
       "skipLibCheck": true,
-      "noEmit": true,
+      "paths": {
-      "types": ["node", "vitest/globals"]
+         "@actions/core": ["node_modules/@actions/core"],
+         "@kubernetes/client-node": ["node_modules/@kubernetes/client-node"]
+      }
    },
-   "exclude": ["node_modules", "**/*.test.ts", "vitest.config.ts", "tests/"]
+   "exclude": ["node_modules", "tests", "src/**/*.test.ts"]
 }

vitest.config.ts

@@ -1,10 +0,0 @@
-import {defineConfig} from 'vitest/config'
-
-export default defineConfig({
-   test: {
-      globals: true,
-      environment: 'node',
-      include: ['**/*.test.ts'],
-      clearMocks: true
-   }
-})