Type Alias MethodKeysFromPaths<D, P>

MethodKeysFromPaths: D extends { paths: infer Paths }
    ? Paths extends Record<string, unknown>
        ? P extends keyof Paths ? Extract<keyof Paths[P], HttpMethod> : never
        : never
    : never

Methods declared on paths[P], restricted to HttpMethod. Returns never when the document has no matching path entry.