@gorhom/codable

Codable

A strict json parser inspired by Swift Codable ❤️

Features

Works almost same as Swift Codable, but with some extra implementation to fit TypeScript / JavaScript environment.

• Decodes JSON payload with pre-defined scheme.
  • Custom keys parsing.
  • Strict types checking.
  • Nested Codable parsing.

Supported Types

Types design was inspired by MobX State Tree ❤️

• Primitives
  • String
  • Number
  • Boolean
• Complex
  • Codable
  • Optional
  • Array
  • Date

Installation

yarn add @gorhom/codable
# or
npm install @gorhom/codable

Usage

import { BaseCodable, types, decode, encode } from '@gorhom/codable';
import dayjs from 'dayjs';

class Post extends BaseCodable {
  title!: string;
  isActive?: boolean;
  date!: Date;
}

Post.CodingProperties = {
  title: types.string,
  isActive: {
    type: types.optional(types.boolean),
    key: 'active',
  },
  date: types.date(dayjs),
};

class User extends BaseCodable {
  id!: number;
  username!: string;
  posts!: Post[];
}

User.CodingProperties = {
  id: types.number,
  username: types.string,
  posts: types.array(Post),
};

const jsonPayload = {
  id: 123,
  username: 'Gorhom',
  posts: [
    {
      title: 'dummy post',
      active: true,
      date: '2020-02-15T16:00:00.000Z',
    },
    {
      title: 'deleted post',
      active: false,
      date: '2020-02-10T16:00:00.000Z',
    },
  ],
};

const user: User = decode(User, jsonPayload);

// now encode it back 🙈
// ⚠️ date encoding still in progress

const userJson = encode(user)

TODO

• [x] Add Swift Decodable functionality.
• [x] Add Swift Encodable functionality.
• [ ] Write API docs.

Built With

• TSdx
• TypeScript

Author

• Mo Gorhom