web-ui-pack/helpers/isEqual.js

Web package with UI elements

export const isBothNaN = (a, b) => a !== a && b !== b;
export default function isEqual(v1, v2) {
    if (v1 == null || v2 == null) {
        return v1 === v2;
    }
    const a = v1.valueOf();
    const b = v2.valueOf();
    return a === b || isBothNaN(a, b);
}