@a11d/equals/dist/Function.equals.js

A value equality utility library.

import { equals } from './symbol.js';
// eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
Function.prototype[equals] = function (other) {
    if (this === other) {
        return true;
    }
    if (!(other instanceof Function)) {
        return false;
    }
    return this.toString() === other.toString();
};