Pretty-Spec

A clojure.spec form pretty printer for Clojure and ClojureScript.

Extends fipp pretty printer with rules for printing clojure.spec forms.

This is just a simple library that does this one thing.

Checkout inspectable or expound if you are looking for spec browsing and explain-data analyzing.

Installation

To include the library add the following to your :dependencies

[pretty-spec "0.1.3"]

Usage

user> (require '[clojure.spec.alpha :as s])
nil
user> (require '[pretty-spec.core :as pspec])
nil
user> (pspec/pprint (s/form 'clojure.core/let))

; (clojure.spec.alpha/fspec
;  :args (clojure.spec.alpha/cat
;         :bindings :clojure.core.specs.alpha/bindings
;         :body (clojure.spec.alpha/* clojure.core/any?))
;  :ret clojure.core/any?
;  :fn nil)
 
nil

Comparing to vanilla clojure.pprint:

user> (clojure.pprint/pprint (s/form 'clojure.core/let))

; (clojure.spec.alpha/fspec
;  :args
;  (clojure.spec.alpha/cat
;   :bindings
;   :clojure.core.specs.alpha/bindings
;   :body
;   (clojure.spec.alpha/* clojure.core/any?))
;  :ret
;  clojure.core/any?
;  :fn
;  nil)
 
nil

Options

Pretty-spec pprint accepts the same options as fipp pprint plus :ns-aliases which you can use to make your pprint even more redable.

user> (pspec/pprint (s/form 'clojure.core/let)
                    {:ns-aliases {"clojure.spec.alpha" "s"
                                  "clojure.core.specs.alpha" "score"
                                  "clojure.core" nil}})

; (s/fspec
;  :args (s/cat :bindings :score/bindings :body (s/* any?))
;  :ret any?
;  :fn nil)