json-schema-service

json-schema-service is a TypeScript library that handles TypeScript types and JSON schemas using decorators or a declarative approach. It allows you to define JSON schemas with minimal boilerplate and provides powerful schema validation capabilities.

Installation

Install the package via npm:

```sh npm install json-schema-service ```

Usage

Defining Schemas

Use decorators to define your schema:

```typescript import { JsonSchemaObject, JsonSchemaProperty } from 'json-schema-service';

@JsonSchemaObject({ description: 'A sample user object' }) class User { @JsonSchemaProperty({ required: true, description: 'User name' }) name: string;

@JsonSchemaProperty({ required: true, description: 'User age' }) age: number; } ```

Creating and Validating JSON Schemas

You can create a JSON schema from your TypeScript classes:

```typescript import { JsonSchemaService } from 'json-schema-service';

const schemaService = new JsonSchemaService(); const userSchema = schemaService.createJsonSchema(User);

// Validate data const { valid, errors } = schemaService.validate(userSchema, { name: 'John', age: 30 });

if (valid) { console.log('Data is valid'); } else { console.error('Data is invalid', errors); } ```

Features

• Decorators for defining JSON schemas directly in TypeScript.
• Validation using Ajv, a fast JSON schema validator.
• Support for oneOf and complex schema types.
• Flexible schema generation for various use cases.

Contributing

Contributions are welcome! Please check the issues and feel free to submit a pull request.

License

This project is licensed under the ISC License.