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psalm/docs/running_psalm/issues/NoInterfaceProperties.md
2020-03-20 19:13:56 -04:00

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# NoInterfaceProperties
Emitted when trying to fetch a property on an interface as interfaces, by definition, do not have definitions for properties.
```php
<?php
interface I {}
class A implements I {
/** @var ?string */
public $foo;
}
function bar(I $i) : void {
if ($i->foo) {}
}
```