On Mon, Sep 20, 2021 at 12:02 PM Eugene Sidelnyk <[email protected]>
wrote:
> From my experience it is not that easy to locate bug like this.
>
Heyo, just a tip for you (and others in this thread), but if you use
`vimeo/psalm` and declare a `list<T>` for a type, then `array_filter()`
that are missing an `array_values()` around it will be caught :)
```php
/** @return list<mixed> */
function foo(array $input): array {
return array_filter($input);
}
```
Will produce:
```
INFO: MixedReturnTypeCoercion - 5:12 - The type 'array<array-key,
non-empty-mixed>' is more general than the declared return type
'list<mixed>' for foo
```
See https://psalm.dev/r/f9c51f72c2
Marco Pivetta
http://twitter.com/Ocramius
http://ocramius.github.com/
