tests/Internal/PerfectHasherTest.php:80:81: MixedInferredReturnType: Could not verify return type 'int' for /home/runner/work/data-structures/data-structures/tests/internal/perfecthashertest.php:80:2987:-:closure (see https://psalm.dev/047)

tests/Internal/PerfectHasherTest.php:83:20: MixedOperand: Left operand cannot be mixed (see https://psalm.dev/059)

tests/Internal/PerfectHasherTest.php:83:20: MixedReturnStatement: Could not infer a return type (see https://psalm.dev/138)

tests/Internal/PerfectHasherTest.php:97:81: MixedInferredReturnType: Could not verify return type 'int' for /home/runner/work/data-structures/data-structures/tests/internal/perfecthashertest.php:97:3506:-:closure (see https://psalm.dev/047)

tests/Internal/PerfectHasherTest.php:100:20: MixedOperand: Left operand cannot be mixed (see https://psalm.dev/059)

tests/Internal/PerfectHasherTest.php:100:20: MixedReturnStatement: Could not infer a return type (see https://psalm.dev/138)