Require Node.js 18 and move to ESM

.github/workflows/main.yml

@@ -10,15 +10,11 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
+          - 20
           - 18
-          - 16
-          - 14
-          - 12
-          - 10
-          - 8
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

index.d.ts

@@ -1,11 +1,13 @@
 /**
-Returns `true` if the given `moduleName` is a Node.js builtin module, `false` otherwise.
+Check if a string matches the name of a Node.js builtin module.
 
-@param moduleName  - The name of the module.
+This matches based a [static list of modules](https://github.com/sindresorhus/builtin-modules) from the latest Node.js version. If you want to check for a module in the current Node.js, use the core [`isBuiltin`](https://nodejs.org/api/module.html#moduleisbuiltinmodulename) method.
+
+@param moduleName - The name of the module.
 
 @example
 ```
-import isBuiltinModule = require('is-builtin-module');
+import isBuiltinModule from 'is-builtin-module';
 
 isBuiltinModule('fs/promises');
 //=> true
@@ -17,6 +19,4 @@ isBuiltinModule('unicorn');
 //=> false
 ```
 */
-declare function isBuiltinModule(moduleName: string): boolean;
-
-export = isBuiltinModule;
+export default function isBuiltinModule(moduleName: string): boolean;

index.js

@@ -1,10 +1,9 @@
-'use strict';
-const builtinModules = require('builtin-modules');
+import builtinModules from 'builtin-modules';
 
 const moduleSet = new Set(builtinModules);
 const NODE_PROTOCOL = 'node:';
 
-module.exports = moduleName => {
+export default function isBuiltinModule(moduleName) {
 	if (typeof moduleName !== 'string') {
 		throw new TypeError('Expected a string');
 	}
@@ -13,10 +12,5 @@ module.exports = moduleName => {
 		moduleName = moduleName.slice(NODE_PROTOCOL.length);
 	}
 
-	const slashIndex = moduleName.indexOf('/');
-	if (slashIndex !== -1 && slashIndex !== moduleName.length - 1) {
-		moduleName = moduleName.slice(0, slashIndex);
-	}
-
 	return moduleSet.has(moduleName);
-};
+}

index.test-d.ts

@@ -1,5 +1,5 @@
 import {expectType, expectError} from 'tsd';
-import isBuiltinModule = require('.');
+import isBuiltinModule from './index.js';
 
 expectType<(moduleName: string) => boolean>(isBuiltinModule);
 expectError<() => boolean>(isBuiltinModule);

license

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

package.json

@@ -10,8 +10,14 @@
 		"email": "sindresorhus@gmail.com",
 		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
+	"exports": {
+		"types": "./index.d.ts",
+		"default": "./index.js"
+	},
+	"sideEffects": false,
 	"engines": {
-		"node": ">=6"
+		"node": ">=18.20"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -37,11 +43,11 @@
 		"match"
 	],
 	"dependencies": {
-		"builtin-modules": "^3.3.0"
+		"builtin-modules": "^4.0.0"
 	},
 	"devDependencies": {
-		"ava": "^0.25.0",
-		"tsd": "^0.7.2",
-		"xo": "^0.23.0"
+		"ava": "^6.1.2",
+		"tsd": "^0.31.0",
+		"xo": "^0.58.0"
 	}
 }

readme.md

@@ -2,18 +2,18 @@
 
 > Check if a string matches the name of a Node.js builtin module
 
+Note that this matches based a [static list of modules](https://github.com/sindresorhus/builtin-modules) from the latest Node.js version. If you want to check for a module in the current Node.js, use the core [`isBuiltin`](https://nodejs.org/api/module.html#moduleisbuiltinmodulename) method.
 
 ## Install
 
+```sh
+npm install is-builtin-module
 ```
-$ npm install is-builtin-module
-```
-
 
 ## Usage
 
 ```js
-const isBuiltinModule = require('is-builtin-module');
+import isBuiltinModule from 'is-builtin-module';
 
 isBuiltinModule('fs');
 //=> true
@@ -28,20 +28,6 @@ isBuiltinModule('unicorn');
 //=> false
 ```
 
-
 ## Related
 
-- [builtin-modules](https://github.com/sindresorhus/builtin-modules) - List of the Node.js builtin modules
-
-
----
-
-<div align="center">
-	<b>
-		<a href="https://tidelift.com/subscription/pkg/npm-is-builtin-module?utm_source=npm-is-builtin-module&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
-	</b>
-	<br>
-	<sub>
-		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
-	</sub>
-</div>
+- [builtin-modules](https://github.com/sindresorhus/builtin-modules) - A static list of the Node.js builtin modules from the latest Node.js version

test.js

@@ -1,5 +1,5 @@
 import test from 'ava';
-import isBuiltinModule from '.';
+import isBuiltinModule from './index.js';
 
 test('main', t => {
 	t.true(isBuiltinModule('fs'));
@@ -9,10 +9,9 @@ test('main', t => {
 	t.true(isBuiltinModule('fs/promises'));
 	t.true(isBuiltinModule('assert/strict'));
 
-	// These are actually not, but should not exist
-	t.true(isBuiltinModule('fs/unknown'));
-	t.true(isBuiltinModule('fs/promises/unknown'));
-	t.true(isBuiltinModule('fs/promises?query=1'));
+	t.false(isBuiltinModule('fs/unknown'));
+	t.false(isBuiltinModule('fs/promises/unknown'));
+	t.false(isBuiltinModule('fs/promises?query=1'));
 
 	t.true(isBuiltinModule('node:fs'));
 	t.true(isBuiltinModule('node:fs/promises'));