psalm/docs/running_psalm/issues/RedundantIdentityWithTrue.md

RedundantIdentityWithTrue

Emitted when comparing a known boolean with true and the strictBinaryOperands flag is set to true.

<?php

function returnsABool(): bool {
    return rand(1, 2) === 1;
}

if (returnsABool() === true) {
    echo "hi!";
}

if (returnsABool() !== false) {
    echo "hi!";
}