ts-to-zod

// 1. Install ts-to-zod // pnpm add --dev ts-to-zod // or yarn add --dev ts-to-zod // or npm install --save-dev ts-to-zod // 2. Create a TypeScript type file (e.g., src/types.ts) // export interface User { // id: string; // name: string; // email: string | null; // age?: number; // roles: 'admin' | 'editor' | 'viewer'[]; // createdAt: Date; // } // 3. Generate Zod schemas using the CLI // pnpm ts-to-zod src/types.ts src/schemas.ts // 4. In another file (e.g., src/app.ts), import and use the generated schemas import { UserSchema } from './schemas'; // Assuming User becomes UserSchema // Example data conforming to the User type const userData = { id: '123', name: 'John Doe', email: 'john@example.com', age: 30, roles: ['admin', 'viewer'], createdAt: new Date().toISOString(), // Zod's .datetime() expects ISO string by default }; // Validate the data try { const parsedUser = UserSchema.parse(userData); console.log('User data is valid:', parsedUser); // parsedUser now has the correct TypeScript type inferred from Zod: z.infer<typeof UserSchema> } catch (error) { console.error('Validation error:', error); } // Example of invalid data const invalidUserData = { id: 456, // Invalid type name: 'Jane Doe', email: null, roles: 'editor', // Invalid type, should be array createdAt: 'not-a-date', // Invalid date format }; try { UserSchema.parse(invalidUserData); } catch (error) { console.error('\nInvalid user data failed validation as expected:', error.errors); }