phel-schema

Schema validation library in phel. The library inspired by zod

Basic Usage

Creating a simple string schema

(ns app
  (:require phel\schema :as z))

# creating a schema for strings
(def my-schema (z/string))

# parsing
(z/parse my-schema "tuna") # => "tuna"
(z/parse my-schema 12) # => throws ZodError

# "safe" parsing (doesn't throw error if validation fails)
(z/safe-parse my-schema "tuna") # => {:success true :data "tuna"}
(z/safe-parse my-schema 12) # => {:success false :error ZodError :issues [...]}

(ns app
  (:require phel\schema :as z))

# creating a schema for strings
(def my-schema (as-> (z/string) s
                     (z/min s 3)
                     (z/max s 10)
                     (z/regex s "/^t/")))

# parsing
(z/parse my-schema "tuna") # => "tuna"
(z/parse my-schema "a tuna") # => throws ZodError

Creating an object schema

(ns app
  (:require phel\schema :as z))

(def user-schama (z/object {
  :username (z/string)
}))

(z/parse user-schama {:username "Ludwig"})

# extract the inferred type
(z/infer user-schama)
# { username: string }

Primitives

(ns app
  (:require phel\schema :as z))

# primitive values
(z/string)
(z/number)
(z/bigint)
(z/boolean)
(z/date)
(z/symbol)

# empty types
(z/undefined)
(z/null)
(z/void) # accepts undefined

# catch-all types
# allows any value
(z/any)
(z/unknown)

# never type
# allows no values
(z/never)

Development

Open shell

docker compose build
docker compose run --rm php_cli bash

Test

# vendor/bin/phel test