Recent questions tagged typescript

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typescript - Provide core singleton services module in Angular 2

I tried to create some core module for just like in tutorial except one detail, I want provide only ... sharedService:SharedService ) { } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular 4 Routing not working on live web-app

My Angular 4 web-app routing works fine in my dev environment, and the menu redirects work fine on the live version. ... /i> </button> </div> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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850 views

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typescript - Replace Generic Interface Type Parameter

I am attempting to create a generic function interface for functor map, that respects the interface provided. ... your time and consideration. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular2 child property change not firing update on bound property

I have a simple custom directive with an input, that I'm binding to in my component. But for whatever reason, the ... "> Can anyone tell me why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Optional parameters based on conditional types

Is it possible to make a function have either mandatory or optional parameters based on conditional types in TypeScript? ... want this to be ok See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to exclude some services like login, register from interceptor Angular 5, HttpClient

i wanted to exclude some services using interceptor. app.module.js providers: [ UserService, RolesService, { provide: ... status)); }); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to compile a specific file with tsc using the paths compiler option

I have several files I want to compile using a script. These files rely on the paths compile option to resolve ... in 'tsconfig.json' file. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Class is using Angular features but is not decorated. Please add an explicit Angular decorator

I have some components like CricketComponent, FootballComponent, TennisComponent etc. All These Classes have some ... Angular decorator. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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967 views

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typescript - Angular: Return Observable / ES6 Promise from FileReader

I was trying to return result from FileReader and I found this implementation. But since it is outdated, I ... new to asynchronous programming. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How use async service into angular httpClient interceptor

Using Angular 4.3.1 and HttpClient, I need to modify the request and response by async service into the HttpInterceptor of ... }); } }); }); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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885 views

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typescript - Angular2 watch for route change

@RouteConfig([ {path: '/about', name: 'About', component: About, useAsDefault: true}, {path: '/test', name: ' ... for this event in Angular 2.x? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - Angular http.post without .subscribe callback

I'm wondering if I can make just a http post request without subscribing on callbacks, something like this this. ... done, null) .subscribe(); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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789 views

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typescript - Angular 2 / Angular 4 : How can I access file from the local system location?

I have one JSON file at the following location in my system: /etc/project/system.json I'm trying to access ... access file from my local system? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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typescript - How can I bind a form to a model in Angular 6 using reactive forms?

Prior to angular 6, I was using [(ngModel)] to directly bind my form field to the model. This is now ... the local form model. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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828 views

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typescript - Angular 2 conditional Validators.required?

How should I go about conditionally requiring a form field? I made a custom validator, but the conditional ... Hope this helps someone! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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935 views

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typescript - Angular ActivatedRoute data returns an empty object

I have a route registered with some data: const routes: Routes = [ {path: 'my-route', data: { title: ' ... object. How to solve this problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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982 views

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typescript - Firebase Cloud Functions Firestore Trigger produces: Error: 7 PERMISSION_DENIED: Missing or insufficient permissions

I'm trying to use a Firebase Cloud Function to update a document within my Firestore database, when one of ... of these settings. Cheers, Lars See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - TS2318: Cannot find global type 'AsyncIterableIterator' - async generator

I have an async generator: async function* foo() { yield "wait..."; await new Promise(r=>setTimeout(r, 900 ... can you run the async generator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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761 views

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typescript - Angular 2 HTTP GET 404 Not Found for URL

I am trying to integrate Angular 2 application with Java Spring Boot backend. For the moment, I place my ... be highly appreciated. Thank you See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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typescript - Angular-cli ng serve livereload not working

I have created a sample project wiht Ng-cli, then i run ng serve in the source folder, the project loads ... , and nothing solved the issue. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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typescript - How do you use typed errors in async catch()

I am using an async function to call an existing promise-based API which rejects the promise with a typed ... bug/incomplete feature of async? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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typescript - Destructuring nullable objects

Typescript (or should we say ES) doesn't allow destructuring of null/undefined objects. It throws TypeError. ... guaranteed non-null objects? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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837 views

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typescript - Angular 2 / leaflet map, How to link to a component from marker popup ? ... routerLink?

Inside my angular 2 app I have a leaflet map with a popup bound to a onClick event. The content of the popup has ... , so this is not an option. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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typescript - Limit input field to two decimal places - Angular 5

The code is as follows <input type="number" class="form-control" value="" name="cost_price" #name="ngModel" ... to achieve this using angular 5? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.9k views

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typescript - Logging request/response in Nest.js

New to Nest.js, I am trying to implement a simple logger for tracing HTTP requests like : :method :url :status :res[ ... (error); }), ); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

typescript - Optional chaining operator support in VSCode

React Native 0.56 provides native support of Optional Chaining Operator i.e ?. However the latest stable release ... all and happy hacking! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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983 views

1 answer

typescript - Angular 4 Circular dependency detected

Upgrading Angular Cli to 1.3.1 I have some warnings now WARNING in Circular dependency detected: srcappwork- ... have a lot of warnings See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

typescript - How to bind static variable of component in HTML in angular 2?

I want to use a static variable of a component in HTML page. How to bind static variable of component with a HTML ... ! {{urlArray}} </div > See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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