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Viewing file:     index.js (1.18 KB)      -rw-r--r--

/*
 * Module requirements.
 */

var isArray = require('isarray');

/**
 * Module exports.
 */

module.exports = hasBinary;

/**
 * Checks for binary data.
 *
 * Right now only Buffer and ArrayBuffer are supported..
 *
 * @param {Object} anything
 * @api public
 */

function hasBinary(data) {

  function _hasBinary(obj) {
    if (!obj) return false;

    if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||
         (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
         (global.Blob && obj instanceof Blob) ||
         (global.File && obj instanceof File)
        ) {
      return true;
    }

    if (isArray(obj)) {
      for (var i = 0; i < obj.length; i++) {
          if (_hasBinary(obj[i])) {
              return true;
          }
      }
    } else if (obj && 'object' == typeof obj) {
      // see: https://github.com/Automattic/has-binary/pull/4
      if (obj.toJSON && 'function' == typeof obj.toJSON) {
        obj = obj.toJSON();
      }

      for (var key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {
          return true;
        }
      }
    }

    return false;
  }

  return _hasBinary(data);
}