app.get('/api/async-data', async (req: Request, res: Response, next: NextFunction) => { try { const data = await getDataFromDatabaseAsync(); res.json(data); } catch (error) { next(error); } }); // 异步数据库查询 async function getDataFromDatabaseAsync(): Promise<any> { retur...
AI代码解释 // 变量declareletuserName:string;declareconstwx:any;// 函数、函数重载declarefunctiongetName(uid:number):string;declarefunctiongetName():string;declarefunctiongetName(cb:()=>any):any;// 类declareclassCourse{cid:number;constructor(cid){};getCoursePrice():number;}// 枚举declareenumStatus...
this section of my previous REST API article if needed) A ready installation of Node.js (preferably version 14+) In a terminal (or command prompt), we’ll create a folder for the project. From that folder, run npm init. That will create some of the basic Node.js project files we ...
getMetadata("data:parse", p, "moveX"); console.log("moveXParseMethod is: ", moveXParseMethod); // moveXParseMethod is: JSON 需要注意的是 Reflect.metadata(metadataKey, metadataValue) API 返回的是一个装饰器函数,该装饰器函数会在 TypeScript 编译的时候自动执行, 并为对应的属性上定义元数据...
此时已经定义好了一个路由地址api/trpc/[trpc].ts(这里 endpoint(端点)会在客户端中使用到),以及greeting函数,服务端的工作就暂且完毕。 创建客户端 创建utils/trpc.ts文件,代码如下 代码语言:typescript title='utils/trpc.ts' AI代码解释 import{httpBatchLink}from'@trpc/client'import{createTRPCNext}from'@...
This could be a pain if some API expected a function returning undefined –you would need to have either at least one explicit return of undefined or a return statement and an explicit annotation. Copy declare function takesFunction(f: () => undefined): undefined; // error! // Argument of...
axios({method:'get',url:'/api/handleRequestURL/get#hash?bar=baz',params: {foo:'bar'} }) 最终请求的url是/api/handleRequestURL/get,当原始url中存在哈希标记(#)时,所携带的所有参数params会被忽略,并且请求的url不包含#之后的东西。 2.8 url 中已存在的参数 ...
指定API 项的发布阶段为“测试版”。它已通过实验性发布给第三方开发人员 为了收集反馈。 例如: /*** Represents a book in the catalog.* @public*/export class Book {/*** The title of the book.* @beta*/public get title(): string;/*** The author of the book.*/public get author(): st...
import { createSourceFile } from "typescript"; // works now! import * as ts from "typescript"; ts.createSourceFile // works now! For more information, see the change here. The transpileDeclaration API TypeScript’s API exposes a function called transpileModule. It’s intended to make it...
假设两个不相关的类T和U拥有相同的publicAPI: classT{publicname:string=''publicgreet():void{console.log('Hello, '+this.name); } }classU{publicname:string=''publicgreet():void{console.log('Greetings, '+this.name); } } 能把类型为T的值赋给类型为U的变量吗?