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bs-aeson

Example

(* OCaml *)
type line = {
  start: point;
  end_: point;
  thickness: int option
}
and point = {
  x: float;
  y: float
}

module Decode = struct
  let point json =
    let open! Aeson.Decode in {
      x = json |> field "x" float;
      y = json |> field "y" float
    }

  let line json =
    Aeson.Decode.{
      start     = json |> field "start" point;
      end_      = json |> field "end" point;
      thickness = json |> optional (field "thickness" int)
    }
end

let data = {| {
  "start": { "x": 1.1, "y": -0.4 },
  "end":   { "x": 5.3, "y": 3.8 }
} |}

let line = data |> Js.Json.parseExn
                |> Decode.line

/* Reason */
type line = {
  start: point,
  end_: point,
  thickness: option int
}
and point = {
  x: float,
  y: float
};

module Decode = {
  let point json =>
    Aeson.Decode.{
      x: json |> field "x" float,
      y: json |> field "y" float
    };

  let line json =>
    Aeson.Decode.{
      start:     json |> field "start" point,
      end_:      json |> field "end" point,
      thickness: json |> optional (field "thickness" int)
    };
};

let data = {| {
  "start": { "x": 1.1, "y": -0.4 },
  "end":   { "x": 5.3, "y": 3.8 }
} |};

let line = data |> Js.Json.parseExn
                |> Decode.line;

Installation

npm install --save bs-aeson

Then add bs-aeson to bs-dependencies in your bsconfig.json:

{
  ...
  "bs-dependencies": ["bs-aeson"]
}

Changes

4.9.0

• Add new function called Aeson.Encode.beltMap1 to encode Belt.Map.t as dictionary

4.8.0

• Aeson.Decode.beltMap now supports decoding object as long as the key is a string. If the key is a number, it still needs to be wrapped with "".
  • The given decodeKey will be called appropriately with either string or number.
  • Decoding array of tuples is still supported.

4.7.0

• BREAKING CHANGE: Remove 'nativeint' since Rescript no longer supports this

4.6.0

• Add Aeson.Decode.beltMap, Aeson.Decode.beltMapInt, Aeson.Decode.beltMapString.
• Add Aeson.Encode.beltMap, Aeson.Encode.beltMapInt, Aeson.Encode.beltMapString.

4.5.0

• BREAKING CHANGE: Rename int64_string to int64_to_string (this matches the naming convention).
• Fix int64_of_string to work with negative numbers.
• Add unit tests for int64_of_string, int64_to_string, and negative bigint.

4.4.0

• Require bs-platform 8.4.2 and bs-zarith 3.1.0 as a minimum versions.

4.3.0

• Require bs-platform 8.0.0 and bs-zarith 3.0.0 as a minimum versions.

4.2.0

• Add Aeson.Decode.optionalField returns null as none.
• Make Aeson.Encode.optionalField parameter order match Aeson.Decode.optionalField.

4.1.0

• Add Aeson.Encode.optionalField and Aeson.Decode.optionalField.

4.0.0

• Add dependency bs-zarith.
• Add Aeson.Encode: uint8, uint16, uint32, uint64, int64_of_string, bigint.
• Add Aeson.Decode: uint8, uint16, uint32, uint64, int64_of_string, bigint.
• Upgrade bs-platform to 7.2.2.
• Upgrade @glennsl/bs-jest to 0.4.9.

3.2.0

• Fix Aeson.Decode.tuple6.
• Add Aeson.Decode.tuple7, Aeson.Decode.tuple8, Aeson.Decode.tuple9, Aeson.Decode.tuple10, Aeson.Encode.tuple6, Aeson.Encode.tuple7, Aeson.Encode.tuple8, Aeson.Encode.tuple9, Aeson.Encode.tuple10.
• Add tests for all of the tuple functions.

3.1.0

• Upgrade bs-platform to 4.0.18.

3.0.0

• Change Aeson.Decode.int64 to decode a literal.
• Move previous definition of Aeson.Decode.int64 to Aeson.Decode.int64_of_array and Aeson.Encode.int64 to Aeson.Decode.int64_to_array.
• Bring back Aeson.Compatibility.Either and the definitions of Aeson.Decode.boolean and Aeson.Encode.boolean from 1.1.0.
• Add Aeson.Compatibility.Either.to_result and Aeson.Compatibility.Either.of_result.

2.0.0

• Remove support for Js.boolean. Remove Aeson.Decode.boolean, Aeson.Decode.booleanArray, Aeson.Encode.boolean and Aeson.Encode.boolean.
• Remove Aeson.Compatibility, Aeson.Decode.either and Aeson.Encode.either depend on Belt.Result.t.
• Remove Aeson.Option. These functions are now available in the BuckleScript stdlib Belt in Belt.Option.
• Add Aeson.Decode.boolArray, Aeson.Encode.boolArray, Aeson.Decode.int32, Aeson.Encode.int32, Aeson.Decode.int64, Aeson.Encode.int64, Aeson.Decode.nativeint, Aeson.Encode.nativeint, Aeson.Decode.result, Aeson.Encode.result.
• Require BuckleScript >= 3.1.0.

1.1.0

• Add Aeson.Encode.singleEnumerator and Aeson.Decode.singleEnumerator to support Haskell aeson style of serializing a enumeration type with only a single enumerator (as an empty JSON list []).

• Add Aeson.Compatibility.Either and serialization functions.

• Fix Aeson.Encode.date and Aeson.Decode.int.

1.0.0

• Fork from bs-json.

• Add Aeson.Decode.date, Aeson.Decode.tuple2, Aeson.Decode.tuple3, Aeson.Decode.tuple4, Aeson.Decode.tuple5, Aeson.Decode.tuple6, Aeson.Decode.unwrapResult.

• Add Aeson.Encode.tuple2, Aeson.Encode.tuple3, Aeson.Encode.tuple4, Aeson.Encode.tuple5, Aeson.Encode.tuple6.