Actually, I was surprised to learn last week that the `eqeqeq` rule that disallows `==` is not in ESLint's recommended set: https://eslint.org/docs/latest/rules/

(And I immediately enabled it for our codebase. Generally I like to just rely on the recommended non-stylistic rules, but this is such an easy footgun that everybody on my team already defaulted to adhering to, that I made an exception.)