fix(build): GitHub actions do not support ESM

action.yml

@@ -9,4 +9,4 @@ inputs:
 
 runs:
   using: 'node12'
-  main: 'dist/index.mjs'
+  main: 'dist/index.js'

index.mjs → index.js

@@ -1,21 +1,17 @@
-import * as core from '@actions/core'
-import * as github from '@actions/github'
-import * as fs from 'fs'
-import { parser } from '@conventional-commits/parser'
-import { visit } from 'unist-util-visit'
+const core = require('@actions/core')
+const github = require('@actions/github')
+const fs = require('fs')
 const { readFile } = fs.promises
+const { parser } = require('@conventional-commits/parser')
 
-const api = {
+const api = module.exports = {
   addLabel,
   isPullRequest,
   main
 }
 
-export {
-  api
-}
-
 async function main () {
+  const { visit } = await import('unist-util-visit')
   if (!process.env.GITHUB_EVENT_PATH) {
     console.warn('no event payload found')
     return

package.json

@@ -3,12 +3,12 @@
   "private": true,
   "version": "1.0.3",
   "description": "automatically apply release labels to PR, based on conventionalcommits.org",
-  "main": "index.mjs",
+  "main": "index.js",
   "scripts": {
-    "test": "c8 mocha test/*.mjs",
+    "test": "c8 mocha test/*.js",
     "posttest": "standard",
     "fix": "standard --fix",
-    "build": "ncc build index.mjs"
+    "build": "ncc build index.js"
   },
   "repository": {
     "type": "git",

test/conventional-release-labels.mjs → test/conventional-release-labels.js

@@ -1,8 +1,8 @@
-import { describe, it, afterEach } from 'mocha'
-import { api } from '../index.mjs'
+const { describe, it, afterEach } = require('mocha')
+const api = require('../index.js')
 // import * as assert from 'assert'
 // import * as core from '@actions/core'
-import sinon from 'sinon'
+const sinon = require('sinon')
 
 const sandbox = sinon.createSandbox()
 process.env.GITHUB_EVENT_PATH = process.env.GITHUB_EVENT_PATH || ''