Require Node.js 12 and move to ESM

Author: sindresorhus

.github/funding.yml

@@ -12,11 +12,9 @@ jobs:
         node-version:
           - 14
           - 12
-          - 10
-          - 8
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

.github/workflows/main.yml

@@ -1,7 +1,7 @@
 /**
 Create an error from multiple errors.
 */
-declare class AggregateError<T extends Error = Error> extends Error implements Iterable<T> {
+export default class AggregateError<T extends Error = Error> extends Error implements Iterable<T> {
 	readonly name: 'AggregateError';
 
 	/**
@@ -10,7 +10,7 @@ declare class AggregateError<T extends Error = Error> extends Error implements I
 
 	@example
 	```
-	import AggregateError = require('aggregate-error');
+	import AggregateError from 'aggregate-error';
 
 	const error = new AggregateError([new Error('foo'), 'bar', {message: 'baz'}]);
 
@@ -34,7 +34,6 @@ declare class AggregateError<T extends Error = Error> extends Error implements I
 	//	at run (bootstrap_node.js:394:7)
 	//	at startup (bootstrap_node.js:149:9)
 
-
 	for (const individualError of error) {
 		console.log(individualError);
 	}
@@ -43,9 +42,7 @@ declare class AggregateError<T extends Error = Error> extends Error implements I
 	//=> [Error: baz]
 	```
 	*/
-	constructor(errors: ReadonlyArray<T | {[key: string]: any} | string>);
+	constructor(errors: ReadonlyArray<T | Record<string, any> | string>);
 
 	[Symbol.iterator](): IterableIterator<T>;
 }
-
-export = AggregateError;

index.d.ts

@@ -1,10 +1,9 @@
-'use strict';
-const indentString = require('indent-string');
-const cleanStack = require('clean-stack');
+import indentString from 'indent-string';
+import cleanStack from 'clean-stack';
 
 const cleanInternalStack = stack => stack.replace(/\s+at .*aggregate-error\/index.js:\d+:\d+\)?/g, '');
 
-class AggregateError extends Error {
+export default class AggregateError extends Error {
 	constructor(errors) {
 		if (!Array.isArray(errors)) {
 			throw new TypeError(`Expected input to be an Array, got ${typeof errors}`);
@@ -34,6 +33,7 @@ class AggregateError extends Error {
 
 		this.name = 'AggregateError';
 
+		// TODO: Use private class field for this when ESLint support class fields.
 		Object.defineProperty(this, '_errors', {value: errors});
 	}
 
@@ -43,5 +43,3 @@ class AggregateError extends Error {
 		}
 	}
 }
-
-module.exports = AggregateError;

index.js

@@ -1,12 +1,12 @@
-import {expectType} from 'tsd';
-import AggregateError = require('.');
+import {expectType, expectAssignable} from 'tsd';
+import AggregateError from './index.js';
 
 const aggregateError = new AggregateError([
 	new Error('foo'),
 	{foo: 'bar'},
 	'bar'
 ]);
-expectType<Iterable<Error>>(aggregateError);
+expectAssignable<Iterable<Error>>(aggregateError);
 expectType<IterableIterator<Error>>(aggregateError[Symbol.iterator]());
 
 for (const error of aggregateError) {
@@ -17,7 +17,7 @@ class CustomError extends Error {
 	public foo: string;
 
 	constructor(message: string) {
-		super(message)
+		super(message);
 		this.name = 'CustomError';
 		this.foo = 'bar';
 	}

index.test-d.ts

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) Sindre Sorhus <[email protected]> (sindresorhus.com)
+Copyright (c) Sindre Sorhus <[email protected]> (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:
 

license

@@ -4,13 +4,16 @@
 	"description": "Create an error from multiple errors",
 	"license": "MIT",
 	"repository": "sindresorhus/aggregate-error",
+	"funding": "https://github.com/sponsors/sindresorhus",
 	"author": {
 		"name": "Sindre Sorhus",
 		"email": "[email protected]",
-		"url": "sindresorhus.com"
+		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
+	"exports": "./index.js",
 	"engines": {
-		"node": ">=8"
+		"node": ">=12"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -30,12 +33,12 @@
 		"iterator"
 	],
 	"dependencies": {
-		"clean-stack": "^2.0.0",
-		"indent-string": "^4.0.0"
+		"clean-stack": "^4.0.0",
+		"indent-string": "^5.0.0"
 	},
 	"devDependencies": {
-		"ava": "^2.4.0",
-		"tsd": "^0.7.1",
-		"xo": "^0.25.3"
+		"ava": "^3.15.0",
+		"tsd": "^0.14.0",
+		"xo": "^0.38.2"
 	}
 }

package.json

@@ -4,18 +4,16 @@
 
 *Note: With [Node.js 15](https://medium.com/@nodejs/node-js-v15-0-0-is-here-deb00750f278), there's now a built-in [`AggregateError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/AggregateError) type.*
 
-
 ## Install
 
 ```
 $ npm install aggregate-error
 ```
 
-
 ## Usage
 
 ```js
-const AggregateError = require('aggregate-error');
+import AggregateError from 'aggregate-error';
 
 const error = new AggregateError([new Error('foo'), 'bar', {message: 'baz'}]);
 
@@ -48,7 +46,6 @@ for (const individualError of error) {
 //=> [Error: baz]
 ```
 
-
 ## API
 
 ### AggregateError(errors)
@@ -57,7 +54,7 @@ Returns an `Error` that is also an [`Iterable`](https://developer.mozilla.org/en
 
 #### errors
 
-Type: `Array<Error|Object|string>`
+Type: `Array<Error|object|string>`
 
-If a string, a new `Error` is created with the string as the error message.<br>
+If a string, a new `Error` is created with the string as the error message.\
 If a non-Error object, a new `Error` is created with all properties from the object copied over.

readme.md

@@ -1,5 +1,5 @@
 import test from 'ava';
-import AggregateError from '.';
+import AggregateError from './index.js';
 
 test('main', t => {
 	const error = new AggregateError([
@@ -23,7 +23,7 @@ test('main', t => {
 		new Error('foo'),
 		new Error('bar'),
 		Object.assign(new Error('baz'), {code: 'EBAZ'}),
-		Object.assign(new Error(), {code: 'EQUX'})
+		Object.assign(new Error(), {code: 'EQUX'}) // eslint-disable-line unicorn/error-message
 	]);
 });