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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;
 
 
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