_cloneBuffer.js
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_cloneBuffer.js
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			var root = require('./_root');

			/** Detect free variable `exports`. */
			var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

			/** Detect free variable `module`. */
			var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

			/** Detect the popular CommonJS extension `module.exports`. */
			var moduleExports = freeModule && freeModule.exports === freeExports;

			/** Built-in value references. */
			var Buffer = moduleExports ? root.Buffer : undefined,
			allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined;

			/**
			* Creates a clone of `buffer`.
			*
			* @private
			* @param {Buffer} buffer The buffer to clone.
			* @param {boolean} [isDeep] Specify a deep clone.
			* @returns {Buffer} Returns the cloned buffer.
			*/
			function cloneBuffer(buffer, isDeep) {
			if (isDeep) {
			return buffer.slice();
			}
			var length = buffer.length,
			result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

			buffer.copy(result);
			return result;
			}

			module.exports = cloneBuffer;