method_path_params_type.ts

type MethodPathParams = {
  get: {
    'foo/:fooId': {
      fooId: number
      foo?: number
    }
    'bar/:baz': {
      baz: number
      bar?: number
    }
  }
  delete: {
    'foo/:fooId': { id: number }
  }
}

function request<M extends keyof MethodPathParams, P extends keyof MethodPathParams[M]>(
  method: M,
  path: P,
  params: MethodPathParams[M][P]
) {
  console.log(method, path, params)
}

request('get', 'foo/:fooId', { fooId: 3 })