Function assertApprox

examples/acceptance/zoom-state.ts:23–27

(label: string, actual: number, expected: number, eps: number)

};

const assertApprox = (label: string, actual: number, expected: number, eps: number): void => {
  if (!Number.isFinite(actual) || Math.abs(actual - expected) > eps) {
    throw new Error(`${label}: expected ~${expected} (±${eps}) but got ${actual}`);
  }
};

// setRange clamp + ordering
{