Question

我正在使用Typescript，Express，TypeORM，GraphQL和TypeGraphQL来构建一个允许用户登录的小型应用程序。

但是，当我在GraphQL操场上点击测试查询bye时，我得到：

Cannot read property 'context' of undefined
"TypeError: Cannot read property 'context' of undefined",
            "    at new exports.isAuth // isAuth is a JS file I wrote

MyContext.js

import { Request, Response } from "express";

export interface MyContext {
  req: Request;
  res: Response;
  payload?: { userId: string };
}

isAuth.js

import { MiddlewareFn } from "type-graphql";
import { verify } from "jsonwebtoken";
import { MyContext } from "./MyContext";

export const isAuth: MiddlewareFn<MyContext> = ({ context }, next) => {
  const authorization = context.req.headers["authorization"];

  if (!authorization) {
    throw new Error("not authorized");
  }
...

UserResolver

  @Query(() => String)
  @UseMiddleware(isAuth)
  bye(@Ctx() { payload }: MyContext) {
    console.log(payload);
    return `your user id is: ${payload!.userId}`;
  }

我不确定为什么在文件context中未定义isAuth.js

Answer 1

已解决：https://github.com/MichalLytek/type-graphql/issues/433

1）进入./tsconfig.json

2）将"target": "es5"更改为"target": "es6"

无法读取未定义的属性“上下文”-GraphQL

1 个答案: