* Fix#4240 - allow type aliases to be used as type parameters
* Fix issues that phpcs found
* Fix#4240 - stop type aliases being everywhere in the same file
* Fix #4240- re-add stuff that was deleted unnecessarily
When checking code like the following:
```
<?php
function checkNegated(string $key): void {
$arr = [
0 => "foo",
1 => "bar",
];
if (!array_key_exists($key, $arr)) {
printf("not found\n");
}
}
function check(string $key): void {
$arr = [
0 => "foo",
1 => "bar",
];
if (array_key_exists($key, $arr)) {
printf("found\n");
}
}
```
the `if` in `checkNegated` would cause:
```
ERROR: RedundantCondition - 9:10 - Type string for $key is never =int(0)
```
This happens when the array keys are all int literals, but the "needle"
is a string.
`array_key_exists()` uses a loose equality comparison, but the generated
assertions for this specific case
(`AssertionFinder::getArrayKeyExistsAssertions`) was generating strict
equality clauses. This commit fixes it by changing the generated clause
from `=` to `~`.
* Add completions for functions
Provide autocompletions in the LSP for all global functions and functions from namespaces used in the current context.
* Uncomment code
* PHPCS
* Simplify functions map
Co-authored-by: Matthew Brown <github@muglug.com>
* Switch to storing lowercase function string in array key
* Fix spacing
Co-authored-by: Matthew Brown <github@muglug.com>
* Implement NonInvariantChildProperty detection
See https://github.com/vimeo/psalm/issues/4184
* Delete test cases with 'parentSetsWiderTypeInConstructor'
As I understand it these are not valid test cases. They
emit NonInvariantPropertyType issues which seems correct - the property
type variation is I think a latent bug in the sample code.
* Reduce shortcode for NonInvariantPropertyType to 1+max used shortcode on master
* Track references on global variables
Add global type references to the type map, and fix up unused detection on global variables.
* Add null assertions
* PHPCS
