Questions tagged [TypeScript] (498)

In angular, how to access chrome.... runtime component?

public subscribe(channel: string, handler: (value: any) => void) { return this.data.subscribe(handler); } Does this mean that the second argument is a function with a parameter value? And that it is returned as the result from a function? What will return the function subscribe

<input onKeyUp={onKeyUp} /> const onKeyUp = (e) => { if (e.keyCode === 13) { e.target.blur(); } }; how to describe function onKeyUp in aid of ts right?

Write a tool to TypeScript. There is a need to use the library: npm i ad Types it is not found. Slowly he tried to create for themselves. And do not understand how to declare function types: ad.user().get(filter) await the ad.user().get({fields: 'sAMAccountName'}); ad.user().add(options) await the ad.user().add({ userNam...

There is a code that works, but the IDE complains: currentElement can be null export function verifyRequired (event: { target: HTMLInputElement }, ignoreError: boolean = false) { updateStepButton(ignoreError) const currentElement: HTMLInputElement = event.target const parentElement = currentElement.parentNode.querySe...

Try to use this in arrow functions, pre-specifying a type for this. I get this error: An arrow function cannot have a 'this' parameter.ts(2730) According to this PR ( https://github.com/Microsoft/TypeScript/pull/6739 ) in typescript, you can use this pointer in functions this way. On the Internet there is absolutely no hi...

The error itself import httpRequest from './httpRequest'; ^^^^^^^^^^^ SyntaxError: Unexpected identifier Code file import httpRequest from './httpRequest'; const http = require('http'); const PORT = 3000; const app = http.createServer((req: any, res: any) => { Res. end('Hello World!\n'); httpRequest.sendRequest(idCo...

Good time of day. Typescript + webpack when you compile a simple class file with this class available for the treatment of globalno. If you add export / import file is executed, but the global class is not available. How to fix? Assuming you can somehow separately to compile ts files without importing, after collecting into...

I write backend server for your application and decided to change the executor from babel-node on the ts-node. My team package.json: "server": "cd server && ts-node --project tsconfig.json -ts r-node/Server register.ts", But get the same error: > nodejs-server@1.0.0 server D:\Projects\Visual Studio Code\NodeJS Se...

Make a plugin for typescript, you need to create a closure in order not to break someone else's code by accident. Without circuit protection is exported normally:class Model { settings = { min: 0, max: 100 }; constructor(options: Object) { this.settings = $.extend(this.settings, options); } static pow(num: number, p...