63 lines
1.4 KiB
JavaScript
63 lines
1.4 KiB
JavaScript
/* global Blob File */
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/*
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* Module requirements.
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*/
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var isArray = require('isarray');
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var toString = Object.prototype.toString;
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var withNativeBlob = typeof global.Blob === 'function' || toString.call(global.Blob) === '[object BlobConstructor]';
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var withNativeFile = typeof global.File === 'function' || toString.call(global.File) === '[object FileConstructor]';
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/**
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* Module exports.
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*/
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module.exports = hasBinary;
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/**
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* Checks for binary data.
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*
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* Supports Buffer, ArrayBuffer, Blob and File.
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*
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* @param {Object} anything
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* @api public
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*/
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function hasBinary (obj) {
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if (!obj || typeof obj !== 'object') {
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return false;
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}
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if (isArray(obj)) {
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for (var i = 0, l = obj.length; i < l; i++) {
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if (hasBinary(obj[i])) {
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return true;
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}
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}
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return false;
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}
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if ((typeof global.Buffer === 'function' && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||
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(typeof global.ArrayBuffer === 'function' && obj instanceof ArrayBuffer) ||
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(withNativeBlob && obj instanceof Blob) ||
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(withNativeFile && obj instanceof File)
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) {
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return true;
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}
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// see: https://github.com/Automattic/has-binary/pull/4
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if (obj.toJSON && typeof obj.toJSON === 'function' && arguments.length === 1) {
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return hasBinary(obj.toJSON(), true);
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}
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for (var key in obj) {
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if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
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return true;
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}
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}
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return false;
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}
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