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Recent questions tagged Typescript
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typescript - How to structure utility class
I have several utility functions. What is the best way to package these up, and then import them? This is what ... does not exist on type util. See Question&Answers more detail:os...
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typescript - How to run a service when the app starts in Angular 2
I created a service SocketService, basically it initializes the socket to let the app listen on the port. This ... I do it correctly? Thanks See Question&Answers more detail:os...
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typescript - "private" and "public" in Angular component
If I don't add private before foo, loadBar, andtext, I believe they are public by default. export class ... private text: string; } Thanks See Question&Answers more detail:os...
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typescript - Angular - "has no exported member 'Observable'"
Typescript code: import { Injectable } from '@angular/core'; import { Observable } from 'rxjs/Observable'; ... json file with Angular version: See Question&Answers more detail:os...
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typescript - node_modules/rxjs/internal/types.d.ts(81,44): error TS1005: ';' expected error after installation of Angular 6
I got an error of node_modules/rxjs/internal/types.d.ts(81,44): error TS1005: ';' expected. after the ... ): error TS1109: Expression expected. See Question&Answers more detail:os...
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typescript elegantly enforce a constraint while preserving types
so originally to enforce a constraint, i'd just apply an interface like this // this is the constraint ... a different approach? thanks! See Question&Answers more detail:os...
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typescript - ionic 3 native plugins stopped working . I tried putting ngx at last.the red line error is gone.But the plugin is not working
import { Market } from '@ionic-native/market/ngx'; constructor(public platform: Platform, public statusBar: StatusBar ... working. Please help. See Question&Answers more detail:os...
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typescript - Angular-SpringBoot downlod excel file HttpErrorResponse
I am working a spring boot server with an angular front page. I have a service to download a .xlsx file from ... .js:3240:31) at Object` See Question&Answers more detail:os...
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typescript - why is return type `null` (or any other type) assignable to return type `void`?
As you may know, in strict mode only undefined is assignable to type void. So if you try: declare let _void: void ... this a bug or a feature? See Question&Answers more detail:os...
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typescript - Angular 4 : Mega menu is not closed after clicked on a menu inside it
I am working in an angular 4 project ,In this I have a mega menu .What I want to do is when I clicked on a ... can anyone help me to fix it . See Question&Answers more detail:os...
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typescript - Angular how to get headers value in the canActive function?
I need to redirect into different user page depends on the userRole value received from the header. angular. ... recieve he header value. See Question&Answers more detail:os...
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typescript - Issue when using distributive conditional types combined with generic method
I've been trying to make a generic function which receives and object T and receives a string property name ... type 'string'. Playground link See Question&Answers more detail:os...
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typescript - Password validation is not working in Angular 5
I am new to angular 5 ,Here I am trying to validate user password based on some conditions . Minimum six ... the pattern directly in HTML). See Question&Answers more detail:os...
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typescript - @Inject custom provider in Angular 2.0.1
i have issue with my custom provider in Angular 2.0.1. I create a custom provider for my http request to add ... }) export class AppModule { } See Question&Answers more detail:os...
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typescript - Electron & Angular: fs.existsSync is not a function
I've created a new Electron-Project with Angular. I build my app with the Angular CLI. Now, I want to communicate ... and hope, you can help me. See Question&Answers more detail:os...
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typescript - Is modifying method's return type by decorator possible?
Let's imagine that I have an A decorator that is being applied on a method that returns a string. The decorator ... fact returns B, not string? See Question&Answers more detail:os...
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typescript - Infer tuple type instead of union type
Does anybody know how to make compiler to infer tuple type automatically ? // Now: (string | number)[] // Wanted: [string, ... 2], ["b", 2] ]; See Question&Answers more detail:os...
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typescript - Make two types different by parameter
Consider next simplified example: type Ref<T extends {id: string}> = T['id'] This type represents ref to object ... compile check for it in TS? See Question&Answers more detail:os...
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typescript - Using enums as types allows values that don't exist in the enum
I have this typescript code (typescript playground): const enum Something { None = 0, Email = 10, All = 20 } ... enum, so shouldn't it throw? See Question&Answers more detail:os...
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typescript - Conditional injection of a service in AngularJS
I have defined a service like this : angular.module('myApp').service('myService', [ '$rootScope', ... ... I want ... if the user is an old one. See Question&Answers more detail:os...
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typescript - Importing an external module in TS causes "ReferenceError: require is not defined"
So when importing an external module like so import GameObjects = module("GameObjects") the outputed JS has this at ... I get by this error? See Question&Answers more detail:os...
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typescript - Angular 2 Injectable Interface?
Today I stumbled upon something that I didn't think would cause me trouble. In Java and Spring, I can declare ... out to an alternative design? See Question&Answers more detail:os...
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typescript - What is "type '{}'"?
In TypeScript, what exactly is type '{}' and how does it relate to other built-in types? For example, ... : number = call(get_the_answer); See Question&Answers more detail:os...
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typescript - Angular2 (rc4) - Check active child route in parent component
I am trying to check the active child route in a parent component, but I am having difficulties with it. I ... a parent component. Any ideas? See Question&Answers more detail:os...
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typescript - ngControl with ngFor in Angular2
Q1. Is it possible to have one Control ie: ValidNumber = new Control('', CustomValidators.number({min:1, ... want from ngControl is Validation. See Question&Answers more detail:os...
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typescript - Combining generics with index type
Since this works: const f = <T extends string>(x: T) => x; f(""); interface Dictionary<T> { [key ... string which is required by indexed type). See Question&Answers more detail:os...
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typescript - Electron, Angular2, "fs"
I am very new to the topic of Angular, Javascript etc. I try to write a (TypeScript) Angular2-Electron application which ... > <!-- endbuild --> See Question&Answers more detail:os...
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typescript - Angular2: Inject a non @Injectable class
angular: 2.0.0-beta.9 Is it possible to inject a non @Injectable class into a component ? For example, this ... come from a Third party library. See Question&Answers more detail:os...
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