@toil/gm-types/src/values/index.ts

All-in-One GM API types (Greasemonkey, Tampermonkey, Violentmonkey and etc)

import type { KeysOrDefaultValue } from "../utils";

export type GMAddValueChangeCallback = (
  name: string,
  oldValue: KeysOrDefaultValue,
  newValue: KeysOrDefaultValue,
  remote: boolean
) => void;