[1.x] Add basic template annotations#228
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This adds basic type safety annotations for static analyzers like PHPStan and Psalm. This will cover around 80% of the use cases and a follow-up PR for all supported versions will be proposed later to get it to a 100% of close to a 100%.
By adding these annotations methods returning a promise can hint their resolving type by adding `@return PromiseInterface<bool>` when they for example resolve to a boolean. By doing that Psalm and PHPStan will understand that the following bit of code will not become an issue because the method's contract promised a boolean through the promise:
```php
$promise->then(static function (bool $isEnabled) {});
```
However, the following will yield errors:
```php
$promise->then(static function (string $isEnabled) {});
```
This PR is a requirement for reactphp/async#40
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Closing this in favor of a PR in the fashion of #223. |
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This adds basic type safety annotations for static analyzers like PHPStan and Psalm. This will cover around 80% of the use cases and a follow-up PR for all supported versions will be proposed later to get it to a 100% of close to a 100%.
By adding these annotations methods returning a promise can hint their resolving type by adding
@return PromiseInterface<bool>when they for example resolve to a boolean. By doing that Psalm and PHPStan will understand that the following bit of code will not become an issue because the method's contract promised a boolean through the promise:However, the following will yield errors:
This PR is a requirement for reactphp/async#40