mirror of
https://github.com/musix-org/musix-oss
synced 2025-10-31 17:51:36 +00:00
18 lines
693 B
JavaScript
18 lines
693 B
JavaScript
var isObject = require('../internals/is-object');
|
|
var setPrototypeOf = require('../internals/object-set-prototype-of');
|
|
|
|
// makes subclassing work correct for wrapped built-ins
|
|
module.exports = function ($this, dummy, Wrapper) {
|
|
var NewTarget, NewTargetPrototype;
|
|
if (
|
|
// it can work only with native `setPrototypeOf`
|
|
setPrototypeOf &&
|
|
// we haven't completely correct pre-ES6 way for getting `new.target`, so use this
|
|
typeof (NewTarget = dummy.constructor) == 'function' &&
|
|
NewTarget !== Wrapper &&
|
|
isObject(NewTargetPrototype = NewTarget.prototype) &&
|
|
NewTargetPrototype !== Wrapper.prototype
|
|
) setPrototypeOf($this, NewTargetPrototype);
|
|
return $this;
|
|
};
|