5 JavaScript Libraries That Will Be Obsolete by 2025 – Modern Alternatives

As JavaScript evolves, some libraries fall behind and can no longer meet the latest performance and feature expectations. This article highlights five libraries that may become obsolete by 2025 and suggests modern alternatives.

Why We Must Replace These JS Libraries

New breakthroughs such as Million.js for performance and innovative documentation methods in React demonstrate that older libraries are being left behind.

1. jQuery

jQuery was once beloved for its cross‑browser support, simple DOM manipulation, and concise syntax. By 2025, native JavaScript APIs and modern frameworks (React, Vue, Angular) have rendered its core utilities obsolete. Native methods like querySelector, addEventListener, and fetch now cover the same ground with less bundle size.

Modern browsers are standardized, eliminating the need for a cross‑browser shim, and bundling jQuery adds unnecessary bloat that slows load times.

If you still rely on jQuery, consider migrating to framework‑specific solutions or refactoring to use native JavaScript.

2. Moment.js

Moment.js has long been the default date‑handling library, but it is heavy (≈66 KB minified) and inflexible compared with newer alternatives. It is also officially deprecated.

Recommended replacements are date‑fns or Luxon , both offering modular imports that dramatically reduce bundle size. Additionally, the native JavaScript Temporal API provides powerful date‑time capabilities without third‑party dependencies.

3. Lodash

Lodash was once a universal utility library. Many of its functions are now native to JavaScript (e.g., Object.assign, spread operator, array methods). Importing the whole library adds considerable overhead.

Consider replacing Lodash utilities with ES6+ equivalents or, for the few cases where Lodash shines, import only the needed functions (e.g., import { cloneDeep } from 'lodash/cloneDeep').

4. Underscore.js

Underscore.js, the predecessor of Lodash, is now largely redundant. Its utility methods have native equivalents or can be implemented with smaller libraries or single functions. Continuing to use Underscore adds unnecessary weight with no functional benefit.

5. RequireJS

RequireJS introduced asynchronous module definition (AMD) before ES6 modules existed. With native ES6 module support in modern browsers and bundlers like Webpack, Vite, and Rollup, RequireJS is now redundant.

Switching to ES6 import/export syntax and using a modern bundler simplifies dependency management and reduces complexity.

Modern Alternatives to the 5 JavaScript Libraries

1. Native JavaScript (for jQuery)

Modern DOM APIs ( querySelector, addEventListener) and fetch cover most jQuery use cases without extra bundle size.

2. date‑fns or Luxon (for Moment.js)

Both provide modular, lightweight date handling, and the native Temporal API offers even richer functionality.

3. ES6+ Native Features (for Lodash)

Spread operator, Object.assign, and array methods ( map, reduce, filter) replace most Lodash utilities.

4. ES6+ Syntax (for Underscore.js)

Functional programming patterns, object manipulation, and array iteration are now native to JavaScript, making Underscore unnecessary.

5. Webpack, Vite, or Native ES6 Modules (for RequireJS)

These tools provide streamlined bundling and dependency handling, eliminating the need for AMD.

Conclusion

The JavaScript ecosystem evolves rapidly; libraries that were once essential can become liabilities. Continuing to use outdated libraries may cause performance issues, increase maintenance costs, and reduce code readability. Adopting native JavaScript features, modern lightweight libraries, or built‑in browser APIs keeps your stack lean, performant, and aligned with current best practices, ensuring you stay ahead as 2025 approaches.