Require Node.js 12 and move to ESM

Author: sindresorhus

.github/workflows/main.yml

@@ -12,8 +12,6 @@ jobs:
         node-version:
           - 14
           - 12
-          - 10
-          - 8
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1

index.d.ts

@@ -40,7 +40,7 @@ interface TypeOption {
 
 	cryptoRandomString({length: 10, type: 'ascii-printable'});
 	//=> '`#Rt8$IK>B'
-	
+
 	cryptoRandomString({length: 10, type: 'alphanumeric'});
 	//=> 'DMuKL8YtE7'
 	```
@@ -66,9 +66,7 @@ interface CharactersOption {
 	characters?: string;
 }
 
-declare namespace cryptoRandomString {
-	type Options = BaseOptions & MergeExclusive<TypeOption, CharactersOption>;
-}
+export type Options = BaseOptions & MergeExclusive<TypeOption, CharactersOption>;
 
 declare const cryptoRandomString: {
 	/**
@@ -78,28 +76,34 @@ declare const cryptoRandomString: {
 
 	@example
 	```
-	import cryptoRandomString = require('crypto-random-string');
+	import cryptoRandomString from 'crypto-random-string';
 
 	cryptoRandomString({length: 10});
 	//=> '2cf05d94db'
 	```
 	*/
-	(options: cryptoRandomString.Options): string;
+	(options: Options): string;
 
 	/**
 	Asynchronously generate a [cryptographically strong](https://en.wikipedia.org/wiki/Strong_cryptography) random string.
 
+	For most use-cases, there's really no good reason to use this async version. From the Node.js docs:
+
+	> The `crypto.randomBytes()` method will not complete until there is sufficient entropy available. This should normally never take longer than a few milliseconds. The only time when generating the random bytes may conceivably block for a longer period of time is right after boot, when the whole system is still low on entropy.
+
+	In general, anything async comes with some overhead on it's own.
+
 	@returns A promise which resolves to a randomized string.
 
 	@example
 	```
-	import cryptoRandomString = require('crypto-random-string');
+	import cryptoRandomString from 'crypto-random-string';
 
 	await cryptoRandomString.async({length: 10});
 	//=> '2cf05d94db'
 	```
 	*/
-	async(options: cryptoRandomString.Options): Promise<string>;
-}
+	async(options: Options): Promise<string>;
+};
 
-export = cryptoRandomString;
+export default cryptoRandomString;

index.js

@@ -1,6 +1,5 @@
-'use strict';
-const {promisify} = require('util');
-const crypto = require('crypto');
+import {promisify} from 'util';
+import crypto from 'crypto';
 
 const randomBytesAsync = promisify(crypto.randomBytes);
 
@@ -71,7 +70,7 @@ const generateRandomBytesAsync = async (byteLength, type, length) => {
 	return buffer.toString(type).slice(0, length);
 };
 
-const allowedTypes = [
+const allowedTypes = new Set([
 	undefined,
 	'hex',
 	'base64',
@@ -80,7 +79,7 @@ const allowedTypes = [
 	'distinguishable',
 	'ascii-printable',
 	'alphanumeric'
-];
+]);
 
 const createGenerator = (generateForCustomCharacters, generateRandomBytes) => ({length, type, characters}) => {
 	if (!(length >= 0 && Number.isFinite(length))) {
@@ -95,7 +94,7 @@ const createGenerator = (generateForCustomCharacters, generateRandomBytes) => ({
 		throw new TypeError('Expected `characters` to be string');
 	}
 
-	if (!allowedTypes.includes(type)) {
+	if (!allowedTypes.has(type)) {
 		throw new TypeError(`Unknown type: ${type}`);
 	}
 
@@ -142,5 +141,8 @@ const createGenerator = (generateForCustomCharacters, generateRandomBytes) => ({
 	return generateForCustomCharacters(length, characters.split(''));
 };
 
-module.exports = createGenerator(generateForCustomCharacters, generateRandomBytes);
-module.exports.async = createGenerator(generateForCustomCharactersAsync, generateRandomBytesAsync);
+const cryptoRandomString = createGenerator(generateForCustomCharacters, generateRandomBytes);
+
+cryptoRandomString.async = createGenerator(generateForCustomCharactersAsync, generateRandomBytesAsync);
+
+export default cryptoRandomString;

index.test-d.ts

@@ -1,5 +1,5 @@
 import {expectType, expectError} from 'tsd';
-import cryptoRandomString = require('.');
+import cryptoRandomString from './index.js';
 
 expectType<string>(cryptoRandomString({length: 10}));
 expectType<string>(cryptoRandomString({length: 10, type: 'url-safe'}));

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

@@ -4,13 +4,16 @@
 	"description": "Generate a cryptographically strong random string",
 	"license": "MIT",
 	"repository": "sindresorhus/crypto-random-string",
+	"funding": "https://github.com/sponsors/sindresorhus",
 	"author": {
 		"name": "Sindre Sorhus",
 		"email": "sindresorhus@gmail.com",
-		"url": "sindresorhus.com"
+		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
+	"exports": "./index.js",
 	"engines": {
-		"node": ">=8"
+		"node": ">=12"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -36,11 +39,11 @@
 		"protect"
 	],
 	"dependencies": {
-		"type-fest": "^0.8.1"
+		"type-fest": "^1.0.1"
 	},
 	"devDependencies": {
-		"ava": "^2.1.0",
-		"tsd": "^0.11.0",
-		"xo": "^0.25.3"
+		"ava": "^3.15.0",
+		"tsd": "^0.14.0",
+		"xo": "^0.38.2"
 	}
 }

readme.md

@@ -13,7 +13,7 @@ $ npm install crypto-random-string
 ## Usage
 
 ```js
-const cryptoRandomString = require('crypto-random-string');
+import cryptoRandomString from 'crypto-random-string';
 
 cryptoRandomString({length: 10});
 //=> '2cf05d94db'
@@ -50,6 +50,12 @@ Returns a randomized string. [Hex](https://en.wikipedia.org/wiki/Hexadecimal) by
 
 Returns a promise which resolves to a randomized string. [Hex](https://en.wikipedia.org/wiki/Hexadecimal) by default.
 
+For most use-cases, there's really no good reason to use this async version. From the Node.js docs:
+
+> The `crypto.randomBytes()` method will not complete until there is sufficient entropy available. This should normally never take longer than a few milliseconds. The only time when generating the random bytes may conceivably block for a longer period of time is right after boot, when the whole system is still low on entropy.
+
+In general, anything async comes with some overhead on it's own.
+
 #### options
 
 Type: `object`

test.js

@@ -1,7 +1,7 @@
 import test from 'ava';
-import cryptoRandomString from '.';
+import cryptoRandomString from './index.js';
 
-// Probabilistic, result is always less than or equal to actual set size, chance it is less is below 1e-256 for sizes up to 32656
+// Probabilistic, result is always less than or equal to actual set size, chance it is less is below 1e-256 for sizes up to 32656.
 const generatedCharacterSetSize = (options, targetSize) => {
 	const set = new Set();
 	const length = targetSize * 640;
@@ -49,15 +49,15 @@ test('url-safe', t => {
 	t.is(cryptoRandomString({length: 0, type: 'url-safe'}).length, 0);
 	t.is(cryptoRandomString({length: 10, type: 'url-safe'}).length, 10);
 	t.is(cryptoRandomString({length: 100, type: 'url-safe'}).length, 100);
-	t.regex(cryptoRandomString({length: 100, type: 'url-safe'}), /^[a-zA-Z\d._~-]*$/); // Sanity check, probabilistic
+	t.regex(cryptoRandomString({length: 100, type: 'url-safe'}), /^[\w.~-]*$/); // Sanity check, probabilistic
 	t.is(generatedCharacterSetSize({type: 'url-safe'}, 66), 66);
 });
 
 test('numeric', t => {
 	t.is(cryptoRandomString({length: 0, type: 'numeric'}).length, 0);
 	t.is(cryptoRandomString({length: 10, type: 'numeric'}).length, 10);
 	t.is(cryptoRandomString({length: 100, type: 'numeric'}).length, 100);
-	t.regex(cryptoRandomString({length: 100, type: 'numeric'}), /^[\d]*$/); // Sanity check, probabilistic
+	t.regex(cryptoRandomString({length: 100, type: 'numeric'}), /^\d*$/); // Sanity check, probabilistic
 	t.is(generatedCharacterSetSize({type: 'numeric'}, 10), 10);
 });
 
@@ -73,7 +73,7 @@ test('ascii-printable', t => {
 	t.is(cryptoRandomString({length: 0, type: 'ascii-printable'}).length, 0);
 	t.is(cryptoRandomString({length: 10, type: 'ascii-printable'}).length, 10);
 	t.is(cryptoRandomString({length: 100, type: 'ascii-printable'}).length, 100);
-	t.regex(cryptoRandomString({length: 100, type: 'ascii-printable'}), /^[!"#$%&'()*+,-./\d:;<=>?@A-Z[\\\]^_`a-z{|}~]*$/); // Sanity check, probabilistic
+	t.regex(cryptoRandomString({length: 100, type: 'ascii-printable'}), /^[!"#$%&'()*+,-./\w:;<=>?@[\\\]^`{|}~]*$/); // Sanity check, probabilistic
 });
 
 test('alphanumeric', t => {
@@ -95,7 +95,7 @@ test('characters', t => {
 
 test('argument errors', t => {
 	t.throws(() => {
-		cryptoRandomString({length: Infinity});
+		cryptoRandomString({length: Number.POSITIVE_INFINITY});
 	});
 
 	t.throws(() => {