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Array keys not retained when using splat operator to define class constant #10460
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I found these snippets: https://psalm.dev/r/32157859fc<?php
class BaseClass {
public const KEYS = [
'hostname' => 'host',
'pass' => 'password',
'dbname' => 'db',
];
}
class ChildClass extends BaseClass {
public const KEYS = [
...parent::KEYS,
'ssl' => 'sslmode',
];
}
/**
* @param array<non-empty-string, non-empty-string> $keyMap
*/
function example(array $keyMap): void
{
}
example(ChildClass::KEYS);
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When using the splat operator to define a class constant, Psalm seems to resolve the resulting array as having integer keys instead of retaining the key type of the source array.
https://psalm.dev/r/32157859fc
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