# malli

- https://www.metosin.fi/blog/malli/
- https://www.youtube.com/watch?v=MR83MhWQ61E


<code clojure>
(def passport-schema-2
  [:map
   [:byr [:int {:min 1920 :max 2002}]]
   [:cid {:optional true} :any]
   [:ecl [:enum "amb" "blu" "brn" "gry" "grn" "hzl" "oth"]]
   [:eyr [:int {:min 2020 :max 2030}]]
   [:iyr [:int {:min 2010 :max 2020}]]
   [:hcl #"^#[0-9a-f]{6}$"]
   [:hgt [:or
          [:map
           [:unit #"cm"]
           [:value [:int {:min 150 :max 193}]]]
          [:map
           [:unit #"in"]
           [:value [:int {:min 59 :max 76}]]]]]
   [:pid #"^\d{9}$"]])
</code>

<code clojure>
  ;; instrument, clj-kondo + pretty errors
  (require '[malli.dev :as dev])
  (require '[malli.dev.pretty :as pretty])
  (dev/start! {:report (pretty/reporter)})

  (require '[malli.instrument :as mi])
  (mi/instrument!)

  (require '[malli.clj-kondo :as mc])
  (mc/emit!)
</code>