From 0e9bfa3461bc72e1d08c85109bc61e63081dae1b Mon Sep 17 00:00:00 2001
From: Hidetake Iwata <int128@gmail.com>
Date: Sun, 28 Apr 2024 11:48:46 +0900
Subject: [PATCH] Migrate to ESM (#366)

---
 eslint.config.mjs => eslint.config.js |  0
 jest.config.js                        | 12 +++++++-----
 package.json                          |  1 +
 src/main.ts                           |  2 +-
 tests/run.test.ts                     |  2 +-
 tsconfig.json                         |  6 ++----
 6 files changed, 12 insertions(+), 11 deletions(-)
 rename eslint.config.mjs => eslint.config.js (100%)

diff --git a/eslint.config.mjs b/eslint.config.js
similarity index 100%
rename from eslint.config.mjs
rename to eslint.config.js
diff --git a/jest.config.js b/jest.config.js
index 7cf1c26..f6a60fb 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,7 +1,9 @@
-module.exports = {
-  preset: 'ts-jest',
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+export default {
+  preset: 'ts-jest/presets/default-esm',
   clearMocks: true,
-  testEnvironment: 'node',
-  testMatch: ['**/*.test.ts'],
-  verbose: true
+  // https://kulshekhar.github.io/ts-jest/docs/guides/esm-support/
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
 }
diff --git a/package.json b/package.json
index 653dd88..71f8a44 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
     "build": "ncc build --source-map --license licenses.txt src/main.ts",
     "test": "jest"
   },
+  "type": "module",
   "dependencies": {
     "@actions/core": "1.10.1",
     "@actions/exec": "1.1.1"
diff --git a/src/main.ts b/src/main.ts
index b45aa97..247adad 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,5 +1,5 @@
 import * as core from '@actions/core'
-import { run } from './run'
+import { run } from './run.js'
 
 const main = async (): Promise<void> => {
   await run({
diff --git a/tests/run.test.ts b/tests/run.test.ts
index 86e5471..ddbeb38 100644
--- a/tests/run.test.ts
+++ b/tests/run.test.ts
@@ -1,4 +1,4 @@
-import { retry } from '../src/run'
+import { retry } from '../src/run.js'
 
 describe('retry', () => {
   test('suceeded', async () => {
diff --git a/tsconfig.json b/tsconfig.json
index 1adf1fe..92ebc1f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,4 @@
 {
-  "extends": "@tsconfig/node20/tsconfig.json",
-  "compilerOptions": {
-    "outDir": "./lib"
-  }
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "@tsconfig/node20/tsconfig.json"
 }