You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
851 B
29 lines
851 B
3 weeks ago
|
import createCtor from './_createCtor.js';
|
||
|
|
import root from './_root.js';
|
||
|
|
|
||
|
|
/** 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
export default createBind;
|