parameters:
    level: 8
    # tests/types checks inference through the pipe operator, which needs PHP 8.5 to parse. PHPStan parses with the
    # lowest configured version, so this can't be a range starting at the library's PHP 8.2 floor; that floor is
    # covered by running the test suite on PHP 8.2.
    phpVersion: 80500
    paths:
        - src
        - tests/types
    ignoreErrors:
        -
            # Eager transforms are typed with a conditional closure type that maps the input container to the result
            # container (see keyedLike()/listLike(), which implement it). PHPStan can't check a closure literal
            # against such a type, so only that mismatch is ignored.
            identifier: return.type
            message: '#^Function Kadet\\Functional\\Collections\\\w+\(\) should return Closure<TIn of iterable>\(TIn\): \(TIn is array \?#'
            path: src/Collections/transforms.php
        -
            # toArray() keeps PHP's own coercion of bool, float and null keys, as an array literal would.
            identifier: offsetAccess.invalidOffset
            message: '#^Possibly invalid array key type bool\|float\|int\|string\|null\.$#'
            path: src/Collections/collectors.php

includes:
    # Errors in the code that predates PHPStan in this project (untyped pre-1.0 functions and classes). New code
    # must pass without entries here.
    - phpstan-baseline.neon