Optimizing Bundle Delivery with Rollup Code Splitting
Learn how to use Rollup's code splitting and dynamic imports to reduce redundant downloads and optimize browser caching for multi-entry applications.
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Choosing a Rollup Chunking Strategy: Entry Points, manualChunks, or preserveModules
A decision guide to Rollup code splitting: when to use entry-point chunks, a manualChunks function, or preserveModules, with working configs and validation steps.
Cutting Bundle Size with Rollup’s Tree‑Shaking: A Practical Guide for Library Authors
Learn how Rollup’s tree‑shaking can trim unused code from your library, the pitfalls to avoid, and a step‑by‑step example that shows real bundle size gains.
javascriptRollup Tree-Shaking and the sideEffects Field: An Architecture Note
How Rollup decides which modules to drop, why package.json sideEffects is a trust boundary, and the checks that catch a wrong declaration before users do.
Rollup Tree-Shaking: Configuring sideEffects for Smaller Bundles
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.
Building Dual ESM and CJS Bundles with Rollup's Multi‑Output
Learn how Rollup's multi‑output lets you build ES module and CommonJS bundles from a single input, with a worked example, trade‑offs, and verification steps.
Resolving Circular Dependency Warnings in Rollup.js
Learn how to diagnose and fix 'Circular dependency' warnings in Rollup.js using the Extraction Pattern and Deferred Execution to prevent runtime undefined imports.
Optimizing Bundle Size with Rollup Tree-Shaking
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.
Rollup Tree-Shaking: An Architecture Note on Dead-Code Elimination
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.