Fastify打字稿:身体不明

Question

这是我第一次使用Fastify，我正面临一个问题，试图在打字稿中获取身体中的值。

有什么想法或建议吗？谢谢!

更新：我想避免使用app.get(...)等来简化代码

这是我的密码：

App.ts

const buildServer = (options = {}) => {
  const app = fastify(options);
  app.register(routesApiV1, { prefix: '/api'});
  return app;
}

Routes.ts

const routesApiV1: FastifyPluginCallback = (fastify, options, done) => {
  fastify.route(userRoute);
  done();
}

User.ts

const handler: RouteHandlerMethod = async (req, res) => {
  const {
    name,
    lastName,
    dateOfBirth,
    addressLine,
    zipCode,
    city,
    country
  } = req.body; // Property '...' does not exist on type 'unknown'
  
  ...
}

const route: RouteOptions = {
  method: 'GET',
  url: '/user/:id',
  // schema: fastifySchema, Tried but not working
  handler,
  preValidation,
}

Answer 1

FastifyRequest类型是泛型类型。你应该把它传给你的体型..。

import type { FastifyRequest } from 'fastify'

interface BodyType {
  name: string
}

const handler = async (req: FastifyRequest<{ Body: BodyType }>) => {
    const { name } = req.body
}

使用RouteHandlerMethod时，默认情况下将请求对象键入为FastifyRequest<{ Body: unknown }>，因此主体的类型未知。

Answer 2

您需要声明类型并键入RouteHandlerMethod和RouteOptions，方法如下：

类型

type Body = {
  name: string;
  // ...
}

type Response = {
   // ...
}

RouteHandlerMethod

import { RawReplyDefaultExpression, RawRequestDefaultExpression, RawServerDefault, RouteHandler, RouteHandlerMethod } from "fastify";

const handler: RouteHandlerMethod<
    RawServerDefault,
    RawRequestDefaultExpression,
    RawReplyDefaultExpression,
    { Reply: Response; Body: Body }
>  = async (req, res) => {
  const {
    name,
    lastName,
    dateOfBirth,
    addressLine,
    zipCode,
    city,
    country
  } = req.body; // Property '...' does not exist on type 'unknown'
  
  ...
}

RouteOptions

import { RawReplyDefaultExpression, RawRequestDefaultExpression, RawServerDefault, RouteHandler, RouteHandlerMethod, RouteOptions } from "fastify";

const route: RouteOptions<RawServerDefault,
RawRequestDefaultExpression,
RawReplyDefaultExpression,
{ Reply: Response, Body: Body }> = {
  method: 'GET',
  url: '/user/:id',
  // schema: fastifySchema, Tried but not working
  handler,
  preValidation,
}