Learn how to use Core‑JS 3.x to polyfill only the features you need. This guide shows the difference between <code>pure</code> and <code>stable</code> imports, walks through a Promise polyfill example, and explains how to keep your bundle lean.
Rollup's tree-shaking only removes dead code when packages correctly declare sideEffects in package.json. Learn how to configure it, verify the pruning, and avoid common pitfalls that leave unused functions in your production bundle.
Learn how to leverage Rollup's tree-shaking to eliminate dead code from your bundles. Discover the importance of named exports and the risks of the sideEffects flag.
Module optimization and dead-code elimination Webpack uses the mode: 'production' setting to trigger internal presets, including the TerserPlugin, which performs dead-code elimination (tree shaking) to reduce bundle size. This process relies on static analysis to determine which exports are used across the dependency graph. A conflict arises when modules con
Compare full, modular, and plugin-based Lodash imports. Learn how to configure lodash-es with Vite, Webpack, or Rollup for tree-shaking and verify the production bundle.
Tree-shaking is a static-analysis contract, not a minifier toggle. Here is the smallest Rollup design that satisfies it, plus checks and failure modes.
Learn how Rollup's tree shaking removes unused code through static analysis of ES Modules and how to avoid common pitfalls like side effects and CommonJS dependencies.
Lodash / Lodash‑ES Integration In a monorepo or multi‑project setup, developers often import from both lodash (CommonJS) and lodash-es (ESM). The goal is to maintain a repeatable build that is both size‑efficient and type‑safe across webpack, Rollup, and other bundlers. Goal: Repeatable Development Environment We need a strategy that guarantees deterministic