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1. package iri

   RFC-compliant universal resource identifier library (URL, URI, IRI) This library provides a universal data model for representation of URI, URL and IRI. It comes packed with parsing, rendering and serialisation functionality. It is implemented in conformance with the RFC-3986 and RFC-3987 specifications and is intended as a standard tool for all tasks related to resource identifiers.

2. package isbn

   ISBN Validation and Manipulation See the README at https://github.com/charukiewicz/hs-isbn#readme

3. package iso3166-country-codes

   A datatype for ISO 3166 country codes Defines datatype CountryCode that has a two letter constructor corresponding to each of the two letter ISO 3166 country codes, and mappings from that type to the official name of the country.

4. package iso639

   ISO-639-1 language codes ISO-639-1 language codes mapping to Haskell datatypes The code is generated from the official site using haskell-src-exts in an extra file included in the .tar.gz. Special thanks to Petter Bergman for the suggestions and bug fixing

5. package jalaali

   Jalaali calendar systems Functions for working with Jalaali (Jalali, Persian, Khayyami, Khorshidi, Shamsi) calendar systems. Please see the README on GitHub at https://github.com/jalaali/jalaali-hs#readme

6. package jmacro

   QuasiQuotation library for programmatic generation of Javascript code. Javascript syntax, functional syntax, hygienic names, compile-time guarantees of syntactic correctness, limited typechecking. Additional documentation available at http://www.haskell.org/haskellwiki/Jmacro

7. package json-feed

   JSON Feed This is an implementation of the JSON Feed spec in Haskell. The spec is available at https://jsonfeed.org. JSON Feed is similar to the Atom and RSS feed formats, but it is serialized as JSON rather than XML.

8. package json-rpc

   Fully-featured JSON-RPC 2.0 library Please see the README on GitHub at https://github.com/jprupp/json-rpc#readme

9. package json-spec-elm-servant

   Generated elm code for servant APIs. Generate Elm encoders, decoders, and API requests for an Servant API, where the shape of the data going over the API is described using `json-spec`. See the `testtest.hs` and `testApi.hs` for an example.

10. package json-spec-openapi

    json-spec-openapi This package provides a way to produce openapi3 documentation from a json-spec specification.

    Example

    Given this data type:

    data User = User
    {      name :: Text
    , lastLogin :: Maybe UTCTime
    }
    deriving ToSchema via (EncodingSchema User) -- <-- ToSchema instance defined here
    instance HasJsonEncodingSpec User where
    type EncodingSpec User =
    JsonObject
    '[ Required "name" JsonString
    , Optional "last-login" JsonDateTime
    ]
    toJSONStructure user =
    (Field @"name" (name user),
    (fmap (Field @"last-login") (lastLogin user),
    ()))
    

    Calling `Data.Aeson.encode (Data.OpenApi3.toSchema (Proxy :: Proxy User))` will produce the following Schema:

    {
    "additionalProperties": false,
    "properties": {
    "last-login": {
    "format": "date-time",
    "type": "string"
    },
    "name": {
    "type": "string"
    }
    },
    "required": [
    "name"
    ],
    "type": "object"
    }
    

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