Package Exports
- is-gif
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (is-gif) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
is-gif 
Check if a Buffer/Uint8Array is a GIF image
Used by image-type.
Install
$ npm install --save is-gifUsage
Node.js
var readChunk = require('read-chunk'); // npm install read-chunk
var isGif = require('is-gif');
var buffer = readChunk.sync('unicorn.gif', 0, 3);
isGif(buffer);
//=> trueBrowser
var xhr = new XMLHttpRequest();
xhr.open('GET', 'unicorn.gif');
xhr.responseType = 'arraybuffer';
xhr.onload = function () {
isGif(new Uint8Array(this.response));
//=> true
};
xhr.send();API
isGif(buffer)
Accepts a Buffer (Node.js) or Uint8Array.
It only needs the first 3 bytes.
License
MIT © Sindre Sorhus