Require Node.js 12.20 and move to ESM

.github/workflows/main.yml

@@ -10,14 +10,10 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - 14
-          - 12
-          - 10
-          - 8
-          - 6
+          - 16
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

fixture.js

@@ -1,5 +1,5 @@
-'use strict';
-const exitHook = require('.');
+import process from 'node:process';
+import exitHook from './index.js';
 
 exitHook(() => {
 	console.log('foo');
@@ -15,4 +15,4 @@ const unsubscribe = exitHook(() => {
 
 unsubscribe();
 
-process.exit(); // eslint-disable-line unicorn/no-process-exit
+process.exit(0); // eslint-disable-line unicorn/no-process-exit

index.d.ts

@@ -5,12 +5,12 @@ The `process.on('exit')` event doesn't catch all the ways a process can exit.
 
 This package is useful for cleaning up before exiting.
 
-@param callback - The callback to execute when the process exits.
+@param onExit - The callback function to execute when the process exits.
 @returns A function that removes the hook when called.
 
 @example
 ```
-import exitHook = require('exit-hook');
+import exitHook from 'exit-hook';
 
 exitHook(() => {
 	console.log('Exiting');
@@ -32,6 +32,4 @@ const unsubscribe = exitHook(() => {});
 unsubscribe();
 ```
 */
-declare function exitHook(callback: () => void): () => void;
-
-export = exitHook;
+export default function exitHook(onExit: () => void): () => void;

index.js

@@ -1,10 +1,10 @@
-'use strict';
+import process from 'node:process';
 
 const callbacks = new Set();
 let isCalled = false;
 let isRegistered = false;
 
-function exit(exit, signal) {
+function exit(shouldManuallyExit, signal) {
 	if (isCalled) {
 		return;
 	}
@@ -15,20 +15,20 @@ function exit(exit, signal) {
 		callback();
 	}
 
-	if (exit === true) {
+	if (shouldManuallyExit === true) {
 		process.exit(128 + signal); // eslint-disable-line unicorn/no-process-exit
 	}
 }
 
-module.exports = callback => {
-	callbacks.add(callback);
+export default function exitHook(onExit) {
+	callbacks.add(onExit);
 
 	if (!isRegistered) {
 		isRegistered = true;
 
 		process.once('exit', exit);
-		process.once('SIGINT', exit.bind(null, true, 2));
-		process.once('SIGTERM', exit.bind(null, true, 15));
+		process.once('SIGINT', exit.bind(undefined, true, 2));
+		process.once('SIGTERM', exit.bind(undefined, true, 15));
 
 		// PM2 Cluster shutdown message. Caught to support async handlers with pm2, needed because
 		// explicitly calling process.exit() doesn't trigger the beforeExit event, and the exit
@@ -41,6 +41,6 @@ module.exports = callback => {
 	}
 
 	return () => {
-		callbacks.delete(callback);
+		callbacks.delete(onExit);
 	};
-};
+}

index.test-d.ts

@@ -1,7 +1,7 @@
 import {expectType} from 'tsd';
-import exitHook = require('./index.js');
+import exitHook from './index.js';
 
-const unsubscribe = exitHook(() => {});
+const unsubscribe = exitHook(() => {}); // eslint-disable-line @typescript-eslint/no-empty-function
 
 expectType<() => void>(unsubscribe);
 unsubscribe();

package.json

@@ -10,8 +10,10 @@
 		"email": "sindresorhus@gmail.com",
 		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
+	"exports": "./index.js",
 	"engines": {
-		"node": ">=6"
+		"node": "^12.20.0 || ^14.13.1 || >=16.0.0"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -37,9 +39,9 @@
 		"signal"
 	],
 	"devDependencies": {
-		"ava": "^1.4.1",
-		"execa": "^1.0.0",
-		"tsd": "^0.7.2",
-		"xo": "^0.24.0"
+		"ava": "^3.15.0",
+		"execa": "^5.1.1",
+		"tsd": "^0.17.0",
+		"xo": "^0.44.0"
 	}
 }

readme.md

@@ -15,7 +15,7 @@ $ npm install exit-hook
 ## Usage
 
 ```js
-const exitHook = require('exit-hook');
+import exitHook from 'exit-hook';
 
 exitHook(() => {
 	console.log('Exiting');
@@ -35,7 +35,7 @@ throw new Error('🦄');
 Removing an exit hook:
 
 ```js
-const exitHook = require('exit-hook');
+import exitHook from 'exit-hook';
 
 const unsubscribe = exitHook(() => {});
 
@@ -44,15 +44,15 @@ unsubscribe();
 
 ## API
 
-### exitHook(callback)
+### exitHook(onExit)
 
 Returns a function that removes the hook when called.
 
-#### callback
+#### onExit
 
 Type: `Function`
 
-The callback to execute when the process exits.
+The callback function to execute when the process exits.
 
 ---
 

test.js

@@ -1,6 +1,7 @@
+import process from 'node:process';
 import test from 'ava';
 import execa from 'execa';
-import exitHook from '.';
+import exitHook from './index.js';
 
 test('main', async t => {
 	const {stdout} = await execa(process.execPath, ['fixture.js']);