@safejs/serializer/src/serializers/regexp/regexp.spec.ts

Serializer is a superset of JSON that includes recursive objects, dates, regular expressions, functions and others which you also can expand by yourself

import { regExpSerializer } from "./regexp";

describe("RegExp", () => {
    it("should serialize", () => {
        expect(regExpSerializer.serialize(/bar/g)).toEqual(["bar", "g"]);
    });
});