ForgeType

ForgeType is a TypeScript utility library that automatically generates types/interfaces from backend JSON data.
It also supports enum detection for short string fields and helps speed up frontend development by reducing boilerplate code.

Features

• Automatically generate TypeScript interfaces from any JSON data
• Detects enums for fields like gender, role, status, and more
• Handles nested objects and arrays
• Optional modification of existing types
• Clean, maintainable code generation for frontend teams

Installation

# Scoped package (public)
npm install forge-type

import { createTypeFromData } from 'forge-type'

const userData = {
  id: 1,
  name: 'John Doe',
  gender: 'male',
  role: 'admin',
  status: 'active',
  friends: [
    {
      id: 2,
      name: 'Jane Smith',
      age: '24',
      gender: 'female',
      city: 'many'
    }
  ],
  profile: {
    bio: 'I love art',
    website: 'https://example.com'
  }
}

// Generate or update a TypeScript interface
const result = createTypeFromData('User', userData, { modify: true })

console.log('--- Generated Type ---')
console.log(result.type)

console.log('--- File Path ---')
console.log(result.filePath)

export interface User {
  id: number;
  name: string;
  gender: "male" | "female";
  role: "admin" | "user";
  status: "active" | "inactive";
  friends: Friend[];
  profile: { bio: string; website: string };
}

export interface Friend {
  id: number;
  name: string;
  age: string;
  gender: "male" | "female";
  city: string;
}