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Bump vimeo/psalm from 4.7.2 to 4.8.1

Wesley Klop requested to merge dependabot/composer/vimeo/psalm-4.8.1 into develop

Created by: dependabot[bot]

Bumps vimeo/psalm from 4.7.2 to 4.8.1.

Release notes

Sourced from vimeo/psalm's releases.

Fix baseline functionality

Release 4.8.0 introduced a bug in baseline generation. This release should fix it!

Detect more unused code

Features

New literal-string type

Inspired by the is_literal RFC we've added a new literal-string type.

The type will be most useful to annotate functions and methods that take SQL. In those methods you generally don't want any code that is not part of your app, e.g.

<?php
/** @​param literal-string $sql */
function execute_sql(string $sql, array $params = []): void { }
$id = (string) ($_GET['id'] ?? '');
// passes type checks
execute_sql(
'SELECT * FROM foo WHERE id = :id',
[':id' => $id]
);
// fails
execute_sql(
'SELECT * FROM foo WHERE id = "' .$id . '"'
);

Psalm’s taint analysis can also help detect this general class of issues, but a literal-string type allows the type-checker to provide guarantees much earlier in the process.

Read more in the documentation.

More specific taint analysis for unescaped quotes

htmlentities can be used to strip some harmful characters in strings, but not all of them (by default).

Psalm has a new issue TaintedTextWithQuotes to help detect strings that might not have HTML tags but can have harmful Javascript.

Detect unused return values

When running with the --find-unused-code flag, Psalm already detects a lot of unnecessary code, including unused public and private methods, unused properties and unused variables.

Now Psalm will also flag unused return values — where a function returns something, but nowhere that calls the given function actually uses the returned value.

See the documentation for UnusedReturnValue and PossiblyUnusedReturnValue for more information.

... (truncated)

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