build: Native ESM support

BREAKING CHANGE: Only Support for node.js ^12.20.0 || >=14.13.1

.mocharc.yml

@@ -1,7 +1,7 @@
-require:
-  - ts-node/register
-  - source-map-support/register
+loader:
+  - ts-node/esm
 full-trace: true
 recursive: true
 extension:
   - ts
+experimental-modules: true

package.json

@@ -23,25 +23,26 @@
     "@typescript-eslint/parser": "^5.4.0",
     "eslint": "^8.3.0",
     "eslint-plugin-jsonc": "^2.0.0",
+    "esm": "^3.2.25",
     "license-checker": "^25.0.1",
     "mocha": "^9.1.3",
     "mochawesome": "^7.0.1",
     "nyc": "^15.1.0",
     "semantic-release-license": "^1.0.3",
     "source-map-support": "^0.5.21",
-    "ts-node": "^10.4.0",
+    "ts-node": "^10.8.1",
     "typedoc": "^0.22.10",
     "typescript": "^4.5.2"
   },
   "engines": {
-    "node": ">=12.0.0"
+    "node": "^12.20.0 || >=14.13.1"
   },
+  "exports": "./dist/index.js",
   "files": [
     "/dist"
   ],
   "homepage": "https://github.com/sebbo2002/js-template#readme",
   "license": "MIT",
-  "main": "dist/index.js",
   "name": "@sebbo2002/js-template-test",
   "repository": {
     "type": "git",
@@ -57,5 +58,6 @@
     "start": "node ./dist/bin/start.js",
     "test": "mocha"
   },
+  "type": "module",
   "version": "1.0.0"
 }

src/bin/cli.ts

@@ -3,7 +3,7 @@
 
 /* istanbul ignore file */
 
-import Magic from '../lib';
+import Magic from '../lib/index.js';
 
 const number = parseInt(process.argv[process.argv.length - 1], 10);
 console.log(Magic.double(number));

test/lib/index.ts

@@ -1,7 +1,7 @@
 'use strict';
 
-import Magic from '../../src/lib';
-import assert = require('assert');
+import Magic from '../../src/lib/index.js';
+import assert from 'assert';
 
 describe('Example', function () {
     it('should work with integers', function () {

tsconfig.json

@@ -2,7 +2,7 @@
     "compilerOptions": {
         "declaration": true,
         "esModuleInterop": true,
-        "module": "none",
+        "module": "es2020",
         "moduleResolution": "node",
         "outDir": "./dist",
         "sourceMap": true,