@vectara/vectara-ui/lib/utils/citations/reorderCitations.test.js

Vectara's design system, codified as a React and Sass component library

import { reorderCitations } from "./reorderCitations";
describe("reorderCitations", () => {
    test("reorders citations in a summary", () => {
        expect(reorderCitations("summary [4] some words [1][3] and stuff at the end")).toEqual("summary [1] some words [2][3] and stuff at the end");
    });
});