_createBind.js
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			var createCtor = require('./_createCtor'),
			root = require('./_root');

			/** Used to compose bitmasks for function metadata. */
			var WRAP_BIND_FLAG = 1;

			/**
			* Creates a function that wraps `func` to invoke it with the optional `this`
			* binding of `thisArg`.
			*
			* @private
			* @param {Function} func The function to wrap.
			* @param {number} bitmask The bitmask flags. See `createWrap` for more details.
			* @param {*} [thisArg] The `this` binding of `func`.
			* @returns {Function} Returns the new wrapped function.
			*/
			function createBind(func, bitmask, thisArg) {
			var isBind = bitmask & WRAP_BIND_FLAG,
			Ctor = createCtor(func);

			function wrapper() {
			var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
			return fn.apply(isBind ? thisArg : this, arguments);
			}
			return wrapper;
			}

			module.exports = createBind;

rOACCT/node_modules/lodash/_createBind.jsd5ad7e6ff2ccreact18