no-self-compare

Disallow comparisons with identical deterministic operands

Repeating the same deterministic operand on both sides usually indicates that one of the intended values was duplicated.
Instead, you SHOULD compare the two intended values or call .isNaN() when testing floating-point NaN.

- Category: correctness
- Level: warning
- Fix: none
- Scope: module

Reported

function changed(value: int32): boolean {
    return value !== value;
}
Accepted

function changed(left: int32, right: int32): boolean {
    return left !== right;
}
Prior art

- ESLint · no-self-compare

language/linter/src/rules/correctness/noselfcompare.rs:6