Generating JSON Schema from TypeScript types

In modern web development, JSON is widely used for data exchange between applications, but it lacks inherent security, necessitating a structured approach to ensure data integrity. JSON Schema provides a solution by allowing developers to define strict data structures, thus enhancing security and reliability, especially in applications with stringent data requirements. By utilizing TypeScript's static type-checking capabilities, developers can generate JSON Schemas from TypeScript types using tools like ts-json-schema-generator, ensuring that the data conforms to expected schemas. This process not only prevents errors on both client and server sides but also aids in documentation by clearly defining the structure of expected data. The article outlines a practical approach to generating and validating JSON Schemas with TypeScript, including setting up a project, writing TypeScript interfaces, and adding middleware to validate data in a web application, thereby improving API reliability by rejecting non-conforming data.