Wasp framework lets developers build custom file-based routers in under 50 lines

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Wasp, a full-stack TypeScript web framework, has traditionally avoided file-based routing in favor of explicit, declarative app configuration. The framework recently updated its core spec file to a standard TypeScript Node.js program, replacing a static config with fully executable code. This change allows developers to use npm libraries, read from disk, and call APIs within their app spec. As a result, developers can now write a small function that scans their source folder and generates routing objects automatically, effectively building their own file-based router. Unlike frameworks such as Next.js where routing conventions are fixed, Wasp's approach lets teams design and customize their own routing logic from scratch.

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