TypeScript-is

typescript-is is a TypeScript compiler transformer that generates runtime type-check functions directly from static TypeScript types. It automates the process of creating type predicates for `any` or `unknown` data, which is common when working with external data sources like API responses or user-uploaded files. The library inspects type definitions at compile time and emits JavaScript functions that meticulously validate incoming objects against those definitions. Currently at version 0.20.0, the project is officially deprecated and will not be updated for TypeScript versions 4.8 and above. Users are strongly advised to migrate to `typia` for newer TypeScript environments. Before its deprecation, the project aimed for regular, feature-driven releases. Its core differentiator lies in leveraging the TypeScript compiler API to avoid manual type predicate writing, aiming for comprehensive type-safety at runtime for serializable JavaScript objects.