Test ESM importing with the `github-script` Action

esm_testing.yml

name: Test ESM with github-script

on:
  workflow_dispatch:

jobs:
  require-esm:
    name: Try CommonJS require on ESM modules
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f

      - uses: actions/setup-node@38d90ce44d5275ad62cc48384b3d8a58c500bb5f
        with:
          node-version: 16.x
          cache: npm

      - run: npm ci

      - uses: actions/github-script@2b34a689ec86a68d8ab9478298f91d5401337b7d
        with:
          script: |
            try {
              console.log('Before require')
              const { default: printStuff } = require('./src/print-stuff.js')
              console.log('After require')
              await printStuff()
              console.log('At the end')
            } catch (error) {
              console.error('Threw an error!')
              throw error
            }

  esm-import-statements:
    name: Try ESM import statements
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f

      - uses: actions/setup-node@38d90ce44d5275ad62cc48384b3d8a58c500bb5f
        with:
          node-version: 16.x
          cache: npm

      - run: npm ci

      - uses: actions/github-script@2b34a689ec86a68d8ab9478298f91d5401337b7d
        with:
          script: |
            try {
              console.log('Before import statement')
              import printStuff from './src/print-stuff.js'
              console.log('After import statement')
              await printStuff()
              console.log('At the end')
            } catch (error) {
              console.error('Threw an error!')
              throw error
            }

  esm-dynamic-imports:
    name: Try ESM dynamic imports
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f

      - uses: actions/setup-node@38d90ce44d5275ad62cc48384b3d8a58c500bb5f
        with:
          node-version: 16.x
          cache: npm

      - run: npm ci

      - uses: actions/github-script@2b34a689ec86a68d8ab9478298f91d5401337b7d
        with:
          script: |
            try {
              console.log('Before dynamic import')
              const printStuff = await import('./src/print-stuff.js')
              console.log('After dynamic import')
              await printStuff()
              console.log('At the end')
            } catch (error) {
              console.error('Threw an error!')
              throw error
            }

  node-es-module-loader-package:
    name: Try node-es-module-loader package
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f

      - uses: actions/setup-node@38d90ce44d5275ad62cc48384b3d8a58c500bb5f
        with:
          node-version: 16.x
          cache: npm

      - run: npm ci

      - uses: actions/github-script@2b34a689ec86a68d8ab9478298f91d5401337b7d
        with:
          script: |
            try {
              const NodeESModuleLoader = require('node-es-module-loader')
              const loader = new NodeESModuleLoader(process.cwd())
              console.log('Before loader import')
              const printStuff = await loader.import('./src/print-stuff.js')
              console.log('After loader import')
              await printStuff()
              console.log('At the end')
            } catch (error) {
              console.error('Threw an error!')
              throw error
            }

  esm-package:
    name: Try esm package
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f

      - uses: actions/setup-node@38d90ce44d5275ad62cc48384b3d8a58c500bb5f
        with:
          node-version: 16.x
          cache: npm

      - run: npm ci

      - uses: actions/github-script@2b34a689ec86a68d8ab9478298f91d5401337b7d
        with:
          script: |
            try {
              const esm = require('esm')
              require = esm(module)
              console.log('Before loader import')
              const printStuff = require('./src/print-stuff.js')
              console.log('After loader import')
              await printStuff()
              console.log('At the end')
            } catch (error) {
              console.error('Threw an error!')
              throw error
            }

  esm-package-with-workarounds:
    name: Try esm package with workarounds
    runs-on: ubuntu-latest
    timeout-minutes: 1
    steps:
      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f

      - uses: actions/setup-node@38d90ce44d5275ad62cc48384b3d8a58c500bb5f
        with:
          node-version: 16.x
          cache: npm

      - run: npm ci

      - uses: actions/github-script@2b34a689ec86a68d8ab9478298f91d5401337b7d
        with:
          script: |
            try {
              // Suppress Node.js core warnings about having ESM in a file with a *.js extension
              // See: https://github.com/standard-things/esm/issues/855
              const module = require('module')
              const fs = require('fs')
              module.Module._extensions['.js'] = function (module, filename) {
                const contents = fs.readFileSync(filename, 'utf8')
                module._compile(require('fs').readFileSync(filename, 'utf8'), filename)
              }

              const esm = require('esm')
              require = esm({})
              console.log('Before loader import')
              const { default: printStuff } = require('./src/print-stuff.js')
              console.log('After loader import')
              await printStuff()
              console.log('At the end')
            } catch (error) {
              console.error('Threw an error!')
              throw error
            }