is-psd:检查BufferUint8Array是否为PSD图像

is-psd 检查Buffer / Uint8Array是否为图像 安装 $ npm install is-psd 用法 Node.js const readChunk = require ( 'read-chunk' ) ; // npm install read-chunk const isPsd = require ( 'is-psd' ) ; const buffer = readChunk . sync ( 'unicorn.psd' , 0 , 4 ) ; isPsd ( buffer ) ; //=> true 浏览器 const xhr = new XMLHttpRequest ( ) ; xhr . open ( 'GET' , 'unicorn.psd' ) ; xhr . responseType = 'arraybuffer' ; xhr . onload