isEqual

is-equal.ts

export function isEqual(a: unknown, b: unknown): boolean {
    if (a === b) return true;

    if (a == null || b == null) return a === b;

    if (typeof a !== typeof b) return false;

    if (Array.isArray(a) && Array.isArray(b)) {
        if (a.length !== b.length) return false;
        return a.every((item, index) => isEqual(item, b[index]));
    }

    if (typeof a === 'object' && typeof b === 'object') {
        const keysA = Object.keys(a) as (keyof typeof a)[];
        const keysB = Object.keys(b) as (keyof typeof b)[];

        if (keysA.length !== keysB.length) return false;
        return keysA.every((key) => key in b && isEqual(a[key], b[key]));
    }

    return false;
}