danvk/source-map-explorer

Health v2 · maintenance only

Adoption not part of the score

3933 stars · 114 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A Node.js CLI tool that analyzes JavaScript bundle size by mapping each byte of minified code back to its original source file via source maps. It renders an interactive treemap visualization and can also output JSON, TSV, or HTML reports.

Use cases

• find out which files bloat my webpack bundle
• visualize javascript bundle size as a treemap
• detect duplicate libraries like two copies of React in a bundle
• analyze minified code size per source file
• export bundle size breakdown as or tsv
• debug why my production bundle is so large

When to choose

• you have source maps for your minified JS/Sass/LESS bundles and want per-file size attribution
• you want a quick CLI-based treemap visualization without wiring up a build plugin
• you need machine-readable bundle size reports (JSON/TSV) for CI or tooling

When to avoid

• you need runtime performance profiling rather than static bundle size analysis
• your bundles lack source maps
• you prefer an integrated build-plugin workflow like webpack-bundle-analyzer inside webpack

Facets

cli-tool · maturity maintenance

developer-tools data-visualization cli developer-tools web-development frontend data-visualization cli cross-platform source-maps bundle-analysis treemap javascript minification code-bloat nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="danvk/source-map-explorer")