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Ts-Rest: TypeScript Contracts for REST APIs with Built-In Zod Validation (ts-rest.com)
18 points by cassepipe on April 14, 2025 | hide | past | favorite | 2 comments


The contract-first design and return to REST seem like solid improvements over trpc.

Lately, I’ve been thinking about what would be the simplest way to typecheck a rest api. I wonder if…

- …it would make sense to define endpoints in isolation, rather than one big router object. Large / recursive types have bad performance, especially when mixed with zod. Isolated contract definitions would prevent statically checking for path conflicts though.

- …a composition-based api would be better than a wrapper to minimize the API surface:

    const getPostById = endpoint(/* */)

    // client
    const postResponse = fetch(getRequest(getPostById, 123))
    const post = getResponseData(getPostsById, postResponse)


Comparison to tRPC discussed here : https://ts-rest.com/docs/comparisons/rpc-comparison




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