azu / azu/immutable-array-prototype
copyWithIn() with Array-like
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- TypeScript
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Description
Currently, following behavior.
```js
import { copyWithin } from "@immutable-array/copyWithin";
const arrayLike = { length: 5, 3: 1 };
let actual = copyWithin(arrayLike, 0, 3);
assert.deepStrictEqual(actual, [1, , , 1,]);
```
Native `Array#copyWithIn()` work following:
```js
[].copyWithin.call({length: 5, 3: 1}, 0, 3);
// {0: 1, 3: 1, length: 5}
```
It return just array-like object.
Is this no problem?
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