Simple Clojurescript logging using Google Closure logging tools, now in cljc :)

.gitignore

out/

README.md

Usage

Log shows with optimization-level :none...

# optimization none
$ clj -m cljs.main -v -O none -t node -c logging
$ node out/main.js
-main: via println
 [  0.001s] [app] "some" "bad" "stuff"

...but not with level :simple

# optimization simple
$ clj -m cljs.main -v -O simple -t node -c logging
$ node out/main.js
-main: via println

deps.edn

{:paths
 ["."]

 :deps
 {org.clojure/clojurescript {:mvn/version "1.10.339"}}}

logging.cljs

(ns logging
  (:refer-clojure :exclude [time])
  (:require [goog.log :as glog])
  (:import goog.debug.Console))


(def logger
  (glog/getLogger "app"))

(def levels {:severe goog.debug.Logger.Level.SEVERE
             :warning goog.debug.Logger.Level.WARNING
             :info goog.debug.Logger.Level.INFO
             :config goog.debug.Logger.Level.CONFIG
             :fine goog.debug.Logger.Level.FINE
             :finer goog.debug.Logger.Level.FINER
             :finest goog.debug.Logger.Level.FINEST})

(defn log-to-console! []
  (.setCapturing (goog.debug.Console.) true))

(defn set-level! [level]
  (.setLevel logger (get levels level (:info levels))))

(defn fmt [msgs]
  (apply str (interpose " " (map pr-str msgs))))

(defn info [& s]
  (let [msg (fmt s)]
    (glog/info logger msg)))

(defn debug [& s]
  (let [msg (fmt s)]
    (glog/fine logger msg)))

(defn error [& s]
  (let [msg (fmt s)]
    (glog/error logger msg)))

(defn -main []
  (println "-main: via println")
  (log-to-console!)
  (set-level! :finest)

  (error "some" "bad" "stuff"))

(set! *main-cli-fn* -main)