twitst4tz

twitter statistics web application
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index.js (1508B)

      1 /* global Blob File */
      2 
      3 /*
      4  * Module requirements.
      5  */
      6 
      7 var isArray = require('isarray');
      8 
      9 var toString = Object.prototype.toString;
     10 var withNativeBlob = typeof Blob === 'function' ||
     11                         typeof Blob !== 'undefined' && toString.call(Blob) === '[object BlobConstructor]';
     12 var withNativeFile = typeof File === 'function' ||
     13                         typeof File !== 'undefined' && toString.call(File) === '[object FileConstructor]';
     14 
     15 /**
     16  * Module exports.
     17  */
     18 
     19 module.exports = hasBinary;
     20 
     21 /**
     22  * Checks for binary data.
     23  *
     24  * Supports Buffer, ArrayBuffer, Blob and File.
     25  *
     26  * @param {Object} anything
     27  * @api public
     28  */
     29 
     30 function hasBinary (obj) {
     31   if (!obj || typeof obj !== 'object') {
     32     return false;
     33   }
     34 
     35   if (isArray(obj)) {
     36     for (var i = 0, l = obj.length; i < l; i++) {
     37       if (hasBinary(obj[i])) {
     38         return true;
     39       }
     40     }
     41     return false;
     42   }
     43 
     44   if ((typeof Buffer === 'function' && Buffer.isBuffer && Buffer.isBuffer(obj)) ||
     45     (typeof ArrayBuffer === 'function' && obj instanceof ArrayBuffer) ||
     46     (withNativeBlob && obj instanceof Blob) ||
     47     (withNativeFile && obj instanceof File)
     48   ) {
     49     return true;
     50   }
     51 
     52   // see: https://github.com/Automattic/has-binary/pull/4
     53   if (obj.toJSON && typeof obj.toJSON === 'function' && arguments.length === 1) {
     54     return hasBinary(obj.toJSON(), true);
     55   }
     56 
     57   for (var key in obj) {
     58     if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
     59       return true;
     60     }
     61   }
     62 
     63   return false;
     64 }