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Configure ClojureScript code splitting with Closure Compiler modules using cljs.main or shadow-cljs. Define a base module, add feature entry points, verify output sizes, and implement runtime loading with error recovery.
ClojureScript's :advanced compilation can shrink a Reagent app from 180 KB to 45 KB gzipped, but only if you describe every external JavaScript dependency in externs files. This post shows the size gains, the externs pitfall, and a practical CI profile strategy.
Learn how externs files keep external JavaScript names intact during ClojureScript's advanced compilation, letting you shrink bundles without breaking third‑party APIs.
Discover how ClojureScript’s :advanced mode can shrink JavaScript bundles by 30‑70 % through dead‑code elimination, what to configure, and how to avoid common pitfalls.
Discover how to enable ClojureScript's :advanced compiler flag and write externs to cut bundle size by up to 70% while keeping the public API intact.
Compare externs files, cljs-oops, and shadow-cljs npm integration for safe ClojureScript interop under :advanced compilation. Includes a validation checklist that catches renaming bugs before they reach production.
A step‑by‑step diagnostic guide for fixing missing externs in ClojureScript :advanced builds, with checks, fixes, and verification steps.
We have a ClojureScript 1.11.x browser project that currently compiles with :target :node and uses :modules to split output into a main chunk plus a lazily loaded feature chunk. We are evaluating a move to :target :bundle so webpack 5 handles npm resolution and code splitting instead of Closure Compiler's module processing. The uncertainty is how the existin
I am configuring a ClojureScript build that compiles with :optimizations :advanced via the Google Closure Compiler. The goal is a minified production bundle where calls into a plain JavaScript library — accessed through the js/ prefix and goog.object — still resolve correctly at runtime. The constraint I am unsure about is the externs boundary. My understand
clojurescript
clojure
webpack