Why Migrate from Lodash to Native ES2020

For years, Lodash was an essential utility library that filled critical gaps in the JavaScript language, offering helper functions for object manipulation, array handling, and safe property access. With the release of ECMAScript 2020 (ES2020), JavaScript introduced powerful built-in language features that handle many of these common tasks out of the box. Today, development teams are actively migrating from Lodash to native ES2020 to reduce bundle sizes, enhance runtime performance, minimize third-party dependencies, and embrace standardized language features.

Elimination of Bundle Overhead

One of the most immediate benefits of migrating to native ES2020 is the reduction in JavaScript bundle size. Even when using tree-shaking or modular imports (such as importing individual Lodash functions), third-party helper code must still be downloaded, parsed, and executed by the browser. Native ES2020 features are implemented directly in the JavaScript engine, requiring zero additional kilobytes over the network and resulting in faster initial page loads and reduced memory usage.

Direct Feature Parity with ES2020 Syntax

ES2020 introduced native operators that directly replace some of the most frequently used Lodash utilities with cleaner, more expressive syntax:

• Optional Chaining (?.) replaces _.get: Developers previously relied on _.get(user, 'profile.address.street') to prevent runtime errors when traversing deeply nested objects. The native optional chaining operator accomplishes this natively with user?.profile?.address?.street, executing faster and avoiding string-based property lookups.
• Nullish Coalescing (??) replaces _.defaultTo: Setting fallback values previously required utilities like _.defaultTo() or logical OR (||), the latter of which incorrectly falls back on valid falsy values like 0, "", or false. The nullish coalescing operator strictly evaluates null and undefined, providing a native fallback mechanism without external helpers.
• Promise.allSettled replaces custom async handlers: Managing collections of promises without failing prematurely previously required custom utility logic. ES2020 natively provides Promise.allSettled(), simplifying asynchronous workflows.
• globalThis replaces environment checks: Lodash previously contained internal boilerplate to detect the global scope across Node.js, web workers, and browser window contexts. ES2020’s globalThis standardizes universal access across any JavaScript runtime.

Superior TypeScript Integration and Developer Experience

Native syntax provides first-class TypeScript support without the need for complex type definitions. Lodash methods like _.get() rely on complex generic types that can fail on deeply nested structures or silently fall back to any. In contrast, native optional chaining preserves exact property types throughout the entire access chain, improving autocompletion, compile-time type safety, and overall developer productivity.

Reduced Supply Chain and Maintenance Risks

Every external package introduces potential security vulnerabilities, maintenance overhead, and dependency conflicts. Relying heavily on third-party utilities necessitates regular audits and updates. By removing Lodash in favor of native ES2020 features, engineering teams shrink their dependency footprint, eliminate third-party supply-chain risks, and ensure their codebase relies exclusively on permanent web standards.

Universal Code Readability

Modern JavaScript developers are trained on ECMAScript standards rather than proprietary library APIs. Writing standard ES2020 code creates a codebase that is immediately understandable to any modern JavaScript developer, streamlining onboarding and eliminating the mental overhead of consulting external documentation for basic data manipulation.