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Languages & runtimes · #clojurescript
A diagnostic guide for resolving 'undefined is not a function' and 'cannot read property of null' errors in ClojureScript caused by JS interop timing and context issues.
Learn how to shrink your ClojureScript bundle with Shadow CLJS’s :advanced compiler mode. A step‑by‑step guide covers config, externs, pitfalls, and verification to keep your production build fast and reliable.
Advanced Closure Compiler builds shrink ClojureScript bundles but risk breaking external libs. This guide shows how to enable :advanced, declare externs, export symbols, and verify the output for a robust production build.
When you need a dynamic list UI that stays in sync with your data, Reagent lets you write declarative components with minimal boilerplate. Learn how atoms, cursors, and lifecycle hooks make state management painless, see a Todo‑list example, and weigh the trade‑offs before you commit.
Learn how to compile ClojureScript to native ES6 modules, expose only the needed vars, and bundle with Webpack or Rollup. A step‑by‑step example shows the compiler flags, metadata, and a quick sanity check.
Learn how to use ClojureScript’s core.async channels to build non‑blocking, composable data streams in the browser. A step‑by‑step example, trade‑offs, and practical checks are included.
Learn how to effectively use the js/ prefix, #js literals, and goog.object to bridge the gap between ClojureScript's immutability and JavaScript's native objects.
Diagnose and fix ClojureScript advanced‑build ReferenceErrors caused by missing externs, with checks, fixes, and escalation steps.
Learn how defonce and static namespace requires let you keep state across figwheel reloads while still benefiting from advanced Closure Compiler dead code elimination.
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