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Emacs and Inferior Clojure Interaction Mode

This guide requires ClojureScript 1.10.238 or later and assumes familiarity with the Quick Start.

Assuming you already have clojure-mode, run M-x package-list-packages and install inf-clojure. If you are using Emacs on OS X be sure to install exec-path-from-shell so that the Node.js REPL will work correctly. If you need exec-path-from-shell make sure to follow the Usage instructions.

Edit your .emacs or init.el and add a function like the following if you are using the JAR in your current directory:

(defun cljs-node-repl ()
  (interactive)
  (inf-clojure "clj -M -m cljs.main -co build.edn -re node -r"))

Open your ClojureScript file and run M-x cljs-node-repl. You’ll get a new buffer with the REPL. Switch back to your file and run M-x inf-clojure-minor-mode. C-c C-l will load the file. C-c Meta-n will switch your namespace. If you place your cursor at the end of a s-expression, C-x C-e will evaluate that expression. C-c C-v will show the docs. C-c C-s will show the source. C-c <return> will macroexpand. Refer to inf-clojure for more documentation.