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42 lines
1.1 KiB
42 lines
1.1 KiB
var constant = require('./constant'),
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root = require('./_root');
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/** Used to determine if values are of the language type `Object`. */
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var objectTypes = {
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'function': true,
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'object': true
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};
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/** Detect free variable `exports`. */
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var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : null;
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/** Detect free variable `module`. */
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var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : null;
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/** Detect the popular CommonJS extension `module.exports`. */
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var moduleExports = (freeModule && freeModule.exports === freeExports) ? freeExports : null;
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/** Built-in value references. */
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var Buffer = moduleExports ? root.Buffer : undefined;
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/**
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* Checks if `value` is a buffer.
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*
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* @static
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* @memberOf _
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
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* @example
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*
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* _.isBuffer(new Buffer(2));
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* // => true
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*
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* _.isBuffer(new Uint8Array(2));
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* // => false
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*/
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var isBuffer = !Buffer ? constant(false) : function(value) {
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return value instanceof Buffer;
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};
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module.exports = isBuffer;
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