feat: convert project from CommonJS to ESM

.eslintrc.json

@@ -1,7 +1,6 @@
 {
   "env": {
-    "commonjs": true,
-    "es6": true,
+    "es2022": true,
     "node": true,
     "mocha": true
   },
@@ -11,7 +10,8 @@
     "SharedArrayBuffer": "readonly"
   },
   "parserOptions": {
-    "ecmaVersion": 2018
+    "ecmaVersion": 2022,
+    "sourceType": "module"
   },
   "ignorePatterns": ["dist/**"],
   "rules": {}

.github/workflows/ci-unit-tests.yaml

@@ -7,12 +7,14 @@ jobs:
     permissions:
       contents: read
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [22, 24]
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
-          # This should match the using value in `actions.yaml`
-          node-version: 24
+          node-version: ${{ matrix.node-version }}
       - run: npm ci
       - run: npm run lint
       - run: npm run test

code-build.js

@@ -1,13 +1,13 @@
 // Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-const core = require("@actions/core");
-const github = require("@actions/github");
-const { CloudWatchLogs } = require("@aws-sdk/client-cloudwatch-logs");
-const { CodeBuild } = require("@aws-sdk/client-codebuild");
-const assert = require("assert");
+import * as core from "@actions/core";
+import * as github from "@actions/github";
+import { CloudWatchLogs } from "@aws-sdk/client-cloudwatch-logs";
+import { CodeBuild } from "@aws-sdk/client-codebuild";
+import assert from "node:assert";
 
-module.exports = {
+export {
   runBuild,
   build,
   waitForBuildEndTime,
@@ -186,12 +186,12 @@ async function waitForBuildEndTime(
   );
 }
 
-function githubInputs() {
+function githubInputs(ctx = github.context) {
   const projectName = core.getInput("project-name", { required: true });
   const disableSourceOverride =
     core.getInput("disable-source-override", { required: false }) === "true";
-  const { owner, repo } = github.context.repo;
-  const { payload } = github.context;
+  const { owner, repo } = ctx.repo;
+  const { payload } = ctx;
   // The github.context.sha is evaluated on import.
   // This makes it hard to test.
   // So I use the raw ENV.