Question 1

Lumo vs traditional ClojureScript compiler – which should I use?

Accepted Answer

Use Lumo for fast, JVM-free development and Node.js integration, but stick with the JVM compiler for production builds due to its stable optimization. Lumo's build API is experimental, so it's riskier for critical projects.

Question 2

How to use npm packages with Lumo REPL?

Accepted Answer

Install npm packages globally or locally, then require them directly in the REPL. The README shows an example with 'npm install express' and '(require 'express)' working seamlessly.

Question 3

Is Lumo good for large ClojureScript projects?

Accepted Answer

It can handle large projects, but the experimental build tool might introduce bugs or performance issues. For large-scale production, the JVM compiler is more reliable and feature-complete.

Question 4

Can Lumo run Clojure code or just ClojureScript?

Accepted Answer

Lumo only runs ClojureScript, not Clojure. It's built on Node.js and V8, so it lacks JVM interop needed for pure Clojure libraries or Java code.

Question 5

How to compile a ClojureScript project with Lumo?

Accepted Answer

Use the 'lumo.build.api' namespace mirroring the standard compiler. For example, '(lumo.build.api/build "src" {:output-to "out/main.js"})' as shown in the README, but note it's experimental.

Question 6

What are the system requirements for Lumo?

Accepted Answer

Lumo requires Node.js version 8 or higher, as specified in the building section. It runs on macOS, Linux, and Windows, with installation via npm, Homebrew, or manual download.

Lumo

What is Lumo?

Overview

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Pros & Cons

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Frequently Asked Questions