JSON से TypeScript - इंटरफेस और टाइप जनरेट ऑनलाइन

// JSON to TypeScript interface generator
function jsonToTypeScript(json, rootName = 'Root') {
  const interfaces = [];

  function inferType(value, name) {
    if (value === null) return 'null';
    if (Array.isArray(value)) {
      if (value.length === 0) return 'unknown[]';
      const types = [...new Set(value.map((item) => inferType(item, name + 'Item')))];
      const typeStr = types.length > 1 ? `(${types.join(' | ')})` : types[0];
      return `${typeStr}[]`;
    }
    if (typeof value === 'object') {
      const interfaceName = toPascalCase(name);
      const properties = Object.entries(value).map(([key, val]) => {
        const type = inferType(val, key);
        const optional = val === null ? '?' : '';
        return `  ${key}${optional}: ${type};`;
      });
      interfaces.push(`interface ${interfaceName} {\n${properties.join('\n')}\n}`);
      return interfaceName;
    }
    return typeof value;
  }

  function toPascalCase(str) {
    return str.replace(/(^|[-_ ])(\w)/g, (_, __, c) => c.toUpperCase());
  }

  const parsed = JSON.parse(json);
  inferType(parsed, rootName);
  return interfaces.reverse().join('\n\n');
}

const json = '{"name": "Alice", "age": 30, "address": {"city": "NYC"}}';
console.log(jsonToTypeScript(json));