Elm JSON Schema
It's very easy to write a JSON Schema that is valid JSON but not a valid JSON Schema. Such faulty schema's still work, they'll just be less strict then you think they are. Usually you'll learn about this a bit later than you'd prefer.
Elm-json-schema allows you to write your JSON schema's in Elm, ensuring a valid result.
Example
personSchema : Schema
personSchema =
object
[ title "person"
, properties
[ required "firstName" <| string []
, required "lastName" <| string []
, optional "age" <|
integer
[ description "Age in years"
, minimum 0
]
, optional "height" <|
number
[ description "Height in meters"
, minimum 0
]
, required "tags" <|
array
[ items <| string []
, minItems 1
]
]
]