Galerie und tage

node_modules/is-png/readme.md

@@ -1,12 +1,14 @@
 # is-png [![Build Status](https://travis-ci.org/sindresorhus/is-png.svg?branch=master)](https://travis-ci.org/sindresorhus/is-png)
 
-> Check if a Buffer/Uint8Array is a [PNG](https://en.wikipedia.org/wiki/Portable_Network_Graphics) image
+> Check if a Buffer/Uint8Array is a [PNG](http://en.wikipedia.org/wiki/Portable_Network_Graphics) image
+
+Used by [image-type](https://github.com/sindresorhus/image-type).
 
 
 ## Install
 
-```
-$ npm install is-png
+```sh
+$ npm install --save is-png
 ```
 
 
@@ -15,9 +17,9 @@ $ npm install is-png
 ##### Node.js
 
 ```js
-const readChunk = require('read-chunk'); // npm install read-chunk
-const isPng = require('is-png');
-const buffer = readChunk.sync('unicorn.png', 0, 8);
+var readChunk = require('read-chunk'); // npm install read-chunk
+var isPng = require('is-png');
+var buffer = readChunk.sync('unicorn.png', 0, 8);
 
 isPng(buffer);
 //=> true
@@ -26,13 +28,16 @@ isPng(buffer);
 ##### Browser
 
 ```js
-(async () => {
-	const response = await fetch('unicorn.png');
-	const buffer = await response.arrayBuffer();
+var xhr = new XMLHttpRequest();
+xhr.open('GET', 'unicorn.png');
+xhr.responseType = 'arraybuffer';
 
-	isPng(new Uint8Array(buffer));
+xhr.onload = function () {
+	isPng(new Uint8Array(this.response));
 	//=> true
-})();
+};
+
+xhr.send();
 ```
 
 
@@ -40,18 +45,11 @@ isPng(buffer);
 
 ### isPng(buffer)
 
-Accepts a Buffer (Node.js) or Uint8Array. Returns a `boolean` of whether `buffer` is a PNG image.
+Accepts a Buffer (Node.js) or Uint8Array.
 
-#### 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
+It only needs the first 8 bytes.
 
 
 ## License
 
-MIT © [Sindre Sorhus](https://sindresorhus.com)
+MIT © [Sindre Sorhus](http://sindresorhus.com)