Require Node.js 18

.github/workflows/main.yml

@@ -12,14 +12,13 @@ jobs:
         node-version:
           - 20
           - 18
-          - 16
         os:
           - ubuntu-latest
           - macos-latest
           - windows-latest
     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

cpy-error.js

@@ -1,9 +1,7 @@
-import NestedError from 'nested-error-stacks';
-
-export default class CpyError extends NestedError {
-	constructor(message, nested) {
-		super(message, nested);
-		Object.assign(this, nested);
+export default class CpyError extends Error {
+	constructor(message, {cause} = {}) {
+		super(message, {cause});
+		Object.assign(this, cause);
 		this.name = 'CpyError';
 	}
 }

index.d.ts

@@ -1,5 +1,5 @@
 import {type Options as GlobOptions} from 'globby';
-import {type Options as CpFileOptions} from 'cp-file';
+import {type Options as CopyFileOptions} from 'copy-file';
 
 export type Entry = {
 	/**
@@ -103,7 +103,7 @@ export type Options = {
 	```
 	*/
 	readonly filter?: (file: Entry) => boolean | Promise<boolean>;
-} & Readonly<GlobOptions> & CpFileOptions; // eslint-disable-line @typescript-eslint/no-redundant-type-constituents
+} & Readonly<GlobOptions> & CopyFileOptions;
 
 export type ProgressData = {
 	/**

index.js

@@ -3,16 +3,13 @@ import EventEmitter from 'node:events';
 import path from 'node:path';
 import os from 'node:os';
 import pMap from 'p-map';
-import arrify from 'arrify';
-import {copyFile} from 'cp-file';
+import {copyFile} from 'copy-file';
 import pFilter from 'p-filter';
 import {isDynamicPattern} from 'globby';
 import micromatch from 'micromatch';
 import CpyError from './cpy-error.js';
 import GlobPattern from './glob-pattern.js';
 
-const defaultConcurrency = (os.cpus().length || 1) * 2; // eslint-disable-line unicorn/explicit-length-check
-
 /**
 @type {import('./index').Options}
 */
@@ -139,7 +136,7 @@ const renameFile = (source, rename) => {
 export default function cpy(
 	source,
 	destination,
-	{concurrency = defaultConcurrency, ...options} = {},
+	{concurrency = os.availableParallelism(), ...options} = {},
 ) {
 	/**
 	@type {Map<string, import('./index').CopyStatus>}
@@ -167,8 +164,8 @@ export default function cpy(
 		/**
 		@type {GlobPattern[]}
 		*/
-		let patterns = expandPatternsWithBraceExpansion(arrify(source))
-			.map(string => string.replace(/\\/g, '/'));
+		let patterns = expandPatternsWithBraceExpansion([source ?? []].flat())
+			.map(string => string.replaceAll('\\', '/'));
 		const sources = patterns.filter(item => !item.startsWith('!'));
 		const ignore = patterns.filter(item => item.startsWith('!'));
 
@@ -187,16 +184,11 @@ export default function cpy(
 			try {
 				matches = pattern.getMatches();
 			} catch (error) {
-				throw new CpyError(
-					`Cannot glob \`${pattern.originalPath}\`: ${error.message}`,
-					error,
-				);
+				throw new CpyError(`Cannot glob \`${pattern.originalPath}\`: ${error.message}`, {cause: error});
 			}
 
 			if (matches.length === 0 && !isDynamicPattern(pattern.originalPath) && !isDynamicPattern(ignore)) {
-				throw new CpyError(
-					`Cannot copy \`${pattern.originalPath}\`: the file doesn't exist`,
-				);
+				throw new CpyError(`Cannot copy \`${pattern.originalPath}\`: the file doesn't exist`);
 			}
 
 			entries = [
@@ -219,7 +211,7 @@ export default function cpy(
 		}
 
 		/**
-		@param {import('cp-file').ProgressData} event
+		@param {import('copy-file').ProgressData} event
 		*/
 		const fileProgressHandler = event => {
 			const fileStatus = copyStatus.get(event.sourcePath) || {
@@ -269,10 +261,7 @@ export default function cpy(
 				try {
 					await copyFile(entry.path, to, {...options, onProgress: fileProgressHandler});
 				} catch (error) {
-					throw new CpyError(
-						`Cannot copy from \`${entry.relativePath}\` to \`${to}\`: ${error.message}`,
-						error,
-					);
+					throw new CpyError(`Cannot copy from \`${entry.relativePath}\` to \`${to}\`: ${error.message}`, {cause: error});
 				}
 
 				return to;

index.test-d.ts

@@ -8,7 +8,7 @@ expectType<Promise<string[]> & ProgressEmitter>(
 	cpy('foo.js', 'destination', {rename: 'foobar'}),
 );
 expectType<Promise<string[]> & ProgressEmitter>(
-	// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
+
 	cpy('foo.js', 'destination', {rename: basename => `prefix-${basename}`}),
 );
 expectType<Promise<string[]> & ProgressEmitter>(

package.json

@@ -11,9 +11,12 @@
 		"url": "https://sindresorhus.com"
 	},
 	"type": "module",
-	"exports": "./index.js",
+	"exports": {
+		"types": "./index.d.ts",
+		"default": "./index.js"
+	},
 	"engines": {
-		"node": ">=16"
+		"node": ">=18"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -46,21 +49,24 @@
 		"directories"
 	],
 	"dependencies": {
-		"arrify": "^3.0.0",
-		"cp-file": "^10.0.0",
-		"globby": "^13.1.4",
+		"copy-file": "^11.0.0",
+		"globby": "^13.2.2",
 		"junk": "^4.0.1",
 		"micromatch": "^4.0.5",
-		"nested-error-stacks": "^2.1.1",
 		"p-filter": "^3.0.0",
 		"p-map": "^6.0.0"
 	},
 	"devDependencies": {
-		"ava": "^5.2.0",
+		"ava": "^5.3.1",
 		"proxyquire": "^2.1.3",
-		"rimraf": "^5.0.0",
-		"tempy": "^3.0.0",
-		"tsd": "^0.28.1",
-		"xo": "^0.54.2"
+		"rimraf": "^5.0.5",
+		"tempy": "^3.1.0",
+		"tsd": "^0.29.0",
+		"xo": "^0.56.0"
+	},
+	"xo": {
+		"rules": {
+			"unicorn/prefer-event-target": "off"
+		}
 	}
 }

readme.md

@@ -2,11 +2,11 @@
 
 > Copy files
 
-**IMPORTANT:** This package has a lot of problems and I unfortunately don't have time to fix them. I would recommend against using this package until these problems are resolved. Help welcome (see the issue tracker)!
+**IMPORTANT:** This package has a lot of problems and I unfortunately don't have time to fix them. I would recommend against using this package until these problems are resolved. Help welcome (see the issue tracker) 🙏
 
 ## Why
 
-- Fast by using streams.
+- Fast by [cloning](https://stackoverflow.com/questions/71629903/node-js-why-we-should-use-copyfile-ficlone-and-copyfile-ficlone-force-what-is) the files whenever possible.
 - Resilient by using [graceful-fs](https://github.com/isaacs/node-graceful-fs).
 - User-friendly by accepting [globs](https://github.com/sindresorhus/globby#globbing-patterns) and creating non-existent destination directories.
 - User-friendly error messages.
@@ -227,6 +227,6 @@ await cpy(source, destination).on('progress', progress => {
 ## Related
 
 - [cpy-cli](https://github.com/sindresorhus/cpy-cli) - CLI for this module
-- [cp-file](https://github.com/sindresorhus/cp-file) - Copy a single file
+- [copy-file](https://github.com/sindresorhus/copy-file) - Copy a single file
 - [move-file](https://github.com/sindresorhus/move-file) - Move a file
 - [make-dir](https://github.com/sindresorhus/make-dir) - Make a directory and its parents if needed

test.js

@@ -287,9 +287,9 @@ test('flatten single file', async t => {
 
 // TODO: Enable again when ESM supports mocking.
 // eslint-disable-next-line ava/no-skip-test
-test.skip('cp-file errors are CpyErrors', async t => {
-	const cpy = cpyMockedError('cp-file');
-	await t.throwsAsync(cpy('license', t.context.dir), {message: /cp-file/, instanceOf: CpyError});
+test.skip('copy-file errors are CpyErrors', async t => {
+	const cpy = cpyMockedError('copy-file');
+	await t.throwsAsync(cpy('license', t.context.dir), {message: /copy-file/, instanceOf: CpyError});
 });
 
 test('throws on non-existing file', async t => {