Function createBind

test-app/public/sinon.js:15554–15563

* 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. * @pa

(func, bitmask, thisArg)

         * @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;
        }
    
        /**
         * Creates a function like `_.lowerFirst`.