Require Node.js 12 and move to ESM

.github/workflows/main.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

index.d.ts

@@ -1,5 +1,3 @@
-/// <reference types="node"/>
-
 /**
 Check if a Buffer/Uint8Array is a [PNG](https://en.wikipedia.org/wiki/Portable_Network_Graphics) image.
 
@@ -9,24 +7,22 @@ Check if a Buffer/Uint8Array is a [PNG](https://en.wikipedia.org/wiki/Portable_N
 @example
 ```
 // Node.js:
-import readChunk = require('read-chunk');
-import isPng = require('is-png');
+import readChunk from 'read-chunk';
+import isPng from 'is-png';
 
 const buffer = readChunk.sync('unicorn.png', 0, 8);
 
 isPng(buffer);
 //=> true
 
 // Browser:
-(async () => {
-	const response = await fetch('unicorn.png');
-	const buffer = await response.arrayBuffer();
+import readChunk from 'read-chunk';
+
+const response = await fetch('unicorn.png');
+const buffer = await response.arrayBuffer();
 
-	isPng(new Uint8Array(buffer));
-	//=> true
-})();
+isPng(new Uint8Array(buffer));
+//=> true
 ```
 */
-declare function isPng(buffer: Uint8Array | Buffer): boolean;
-
-export = isPng;
+export default function isPng(buffer: Uint8Array | Buffer): boolean;

index.js

@@ -1,6 +1,4 @@
-'use strict';
-
-module.exports = buffer => {
+export default function isPng(buffer) {
 	if (!buffer || buffer.length < 8) {
 		return false;
 	}
@@ -15,4 +13,4 @@ module.exports = buffer => {
 		buffer[6] === 0x1A &&
 		buffer[7] === 0x0A
 	);
-};
+}

index.test-d.ts

@@ -1,13 +1,11 @@
 /// <reference lib="dom"/>
 import {expectType} from 'tsd';
-import isPng = require('.');
+import isPng from './index.js';
 
 expectType<boolean>(isPng(new Uint8Array(0)));
 expectType<boolean>(isPng(Buffer.from('')));
 
-(async () => {
-	const response = await fetch('unicorn.png');
-	const buffer = await response.arrayBuffer();
+const response = await fetch('unicorn.png');
+const buffer = await response.arrayBuffer();
 
-	isPng(new Uint8Array(buffer));
-})();
+isPng(new Uint8Array(buffer));

license

@@ -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:
 

package.json

@@ -4,13 +4,16 @@
 	"description": "Check if a Buffer/Uint8Array is a PNG image",
 	"license": "MIT",
 	"repository": "sindresorhus/is-png",
+	"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"
@@ -37,10 +40,10 @@
 		"uint8array"
 	],
 	"devDependencies": {
-		"@types/node": "^11.13.5",
-		"ava": "^1.4.1",
+		"@types/node": "^14.14.41",
+		"ava": "^3.15.0",
 		"read-chunk": "^3.2.0",
-		"tsd": "^0.7.2",
-		"xo": "^0.24.0"
+		"tsd": "^0.14.0",
+		"xo": "^0.38.2"
 	}
 }

readme.md

@@ -2,21 +2,20 @@
 
 > Check if a Buffer/Uint8Array is a [PNG](https://en.wikipedia.org/wiki/Portable_Network_Graphics) image
 
-
 ## Install
 
 ```
 $ npm install is-png
 ```
 
-
 ## Usage
 
 ##### Node.js
 
 ```js
-const readChunk = require('read-chunk'); // npm install read-chunk
-const isPng = require('is-png');
+import readChunk from 'read-chunk'; // npm install read-chunk
+import isPng from 'is-png';
+
 const buffer = readChunk.sync('unicorn.png', 0, 8);
 
 isPng(buffer);
@@ -26,15 +25,14 @@ isPng(buffer);
 ##### Browser
 
 ```js
-(async () => {
-	const response = await fetch('unicorn.png');
-	const buffer = await response.arrayBuffer();
+import isPng from 'is-png';
 
-	isPng(new Uint8Array(buffer));
-	//=> true
-})();
-```
+const response = await fetch('unicorn.png');
+const buffer = await response.arrayBuffer();
 
+isPng(new Uint8Array(buffer));
+//=> true
+```
 
 ## API
 
@@ -46,12 +44,6 @@ Accepts a Buffer (Node.js) or Uint8Array. Returns a `boolean` of whether `buffer
 
 The buffer to check. It only needs the first 8 bytes.
 
-
 ## Related
 
 - [file-type](https://github.com/sindresorhus/file-type) - Detect the file type of a Buffer/Uint8Array/ArrayBuffer
-
-
-## License
-
-MIT © [Sindre Sorhus](https://sindresorhus.com)

test.js

@@ -1,6 +1,6 @@
 import test from 'ava';
 import readChunk from 'read-chunk';
-import isPng from '.';
+import isPng from './index.js';
 
 const check = filename => isPng(readChunk.sync(filename, 0, 8));