hooks.md

Hooks

Hooks can change how the server evals code, prints results, and reports errors. Each hook function is given the default function and returns a new one:

• :eval-hook: Given clojure.core/eval, return a function of form.
• :print-hook: Given nREPL's print function, return a function of value writer options.
• :caught-hook: Given clojure.main/repl-caught, return a function of throwable.

Example

Pretty print all results:

;; .cljconf/org.clojure/clojure-cli.repl.edn
{:print-hook dev.hooks/pprint-values}

(ns dev.hooks
  (:require [clojure.pprint :as pprint]))

(defn pprint-values [_default-print]
  (fn [value writer _options]
    (pprint/pprint value writer)))