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typescript - Implementing a generic function with a conditional return type
I'm trying a very basic (contrived) conditional type function and getting unexpected errors: function test< T >( ... this doesn't actually work. See Question&Answers more detail:os...
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typescript - Extend interface defined in .d.ts file
In my TypeScript project, I use DefinitelyTyped definitions for external js dependencies. Sometimes it might happen that ... isArray() method?? See Question&Answers more detail:os...
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typescript - Angular 2 Routing run in new tab
I am working with a asp.net core application with angular2 and my routing is working fine. <a target=" ... page refreshes all the reference. See Question&Answers more detail:os...
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typescript - Is it possible to restrict number to a certain range
Since typescript 2.0 RC (or even beta?) it is possible to use number literal types, as in type t = 1 | 2;. Is ... /would need to use 0|1|2|... See Question&Answers more detail:os...
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typescript - angular 2 - adding 3rd party libs
I am trying to start using angular 2 cli. I want to use momentjs in my project so here is what I have done: ... a guide to add 3rd party libs. See Question&Answers more detail:os...
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typescript - Angular 6 View is not updated after changing a variable within subscribe
Why is the view not being updated when a variable changes within a subscribe? I have this code: example. ... the need of calling detectChanges. See Question&Answers more detail:os...
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typescript - localStorage is not defined (Angular Universal)
I am using universal-starter as backbone. When my client starts, it read a token about user info from ... .getItem is not a function See Question&Answers more detail:os...
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typescript - What does "... resolves to a non-module entity and cannot be imported using this construct" mean?
I have some TypeScript files: MyClass.ts class MyClass { constructor() { } } export = MyClass; MyFunc.ts ... a call signature. What gives? See Question&Answers more detail:os...
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typescript - Get all validation errors from Angular 2 FormGroup
Given this code: this.form = this.formBuilder.group({ email: ['', [Validators.required, EmailValidator.isValid] ... in the assert message. See Question&Answers more detail:os...
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typescript - Empty interface allow any object?
Why empty interface doesn't require object to be empty? interface A {}; const a: A = {a: 1}; console.log ... Is this intentional or just a bug? See Question&Answers more detail:os...
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typescript - Angular 2 ngOnInit not called
I am building an Angular 2 app with version beta.8. In this app i have a component which implements OnInit. ... string in this case 'Overview'. See Question&Answers more detail:os...
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typescript - What is the "as syntax" pointed out by tslint?
I upgraded tslint and now it complains about: ERROR: src/Metronome/JobFetcher.ts[13, 32]: Type assertion using the ... and why should I use it? See Question&Answers more detail:os...
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typescript - angular2 bootstrap with data from ajax call(s)
I want to bootstrap my application with data I am retrieving from a service. I am doing something along the ... brittle as you can imagine. See Question&Answers more detail:os...
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typescript - for-in statement
TypeScript docs say nothing about loop like for or for-in. From playing with the language it seems that ... strongly-typed iteration variable? See Question&Answers more detail:os...
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typescript - Filtering an array in angular2
I am looking into how to filter an array of data in Angular2. I looked into using a custom pipe, but I feel ... this, I would love to know! See Question&Answers more detail:os...
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typescript - Why `downlevelIteration` is not on by default?
When targeting ES5 with usage of spread operator ... to convert an Iterator to an Array, it shows the ... and error in TypeScript Playground See Question&Answers more detail:os...
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typescript - Angular 4/5 HttpClient: Argument of type string is not assignable to 'body'
The Angular docs say: The response body doesn't return all the data you may need. Sometimes servers return special headers ... map((res) => ... See Question&Answers more detail:os...
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typescript - Angular 2 : No NgModule metadata found
I'm brand new to Angular 2 and attempting to follow along with a video tutorial I found. Despite following all of ... {}; Thanks for your time. See Question&Answers more detail:os...
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typescript - How to remove index signature using mapped types
Given an interface (from an existing .d.ts file that can't be changed): interface Foo { [key: string]: any; ... has the method bar(): void; See Question&Answers more detail:os...
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typescript - Angular 2 Form "Cannot find control with path"
I try to make a dynamic form (so you can limitless add items to a list), but somehow the content of my list is ... ''])); console.log(control) } See Question&Answers more detail:os...
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typescript - async/await in Angular `ngOnInit`
I'm currently evaluating the pros n' cons of replacing Angular's resp. RxJS' Observable with plain Promise ... run into any unforseen problems? See Question&Answers more detail:os...
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typescript - tsc throws `TS2307: Cannot find module` for a local file
I've got a simple example project using TypeScript: https://github.com/unindented/ts-webpack-example Running tsc ... a configuration issue... See Question&Answers more detail:os...
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typescript - Angular 6 does not add X-XSRF-TOKEN header to http request
I've read the docs and all the related questions on SO, but still Angular's XSRF mechanism isn't working for ... the X-XSRF-TOKEN header. Why? See Question&Answers more detail:os...
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typescript - How to programmatically enumerate an enum type?
Say I have a TypeScript enum, MyEnum, as follows: enum MyEnum { First, Second, Third } What would be the best way ... / or, how to roll my own? See Question&Answers more detail:os...
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typescript - Angular 2: How to use JavaScript Date Object with NgModel two way binding
I'm working with Angular 2 and I have this code: JS, this code initiates the employee-variable for the template: ... date. How can I do this? See Question&Answers more detail:os...
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typescript - Update parent component property from child component in Angular 2
I'm using @input to receive a property from parent component in order to activate a CSS class in one of child ... . (Please update the plunker). See Question&Answers more detail:os...
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typescript - What does the tsconfig option "lib" do?
I have an existing project that has this line in tsconfig.json: lib:["2016", "DOM"] What is the purpose of ... or later. What does that mean? See Question&Answers more detail:os...
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typescript - How to deal with http status codes other than 200 in Angular 2
Right now the way I do http requests (borrowed from this answer) is this: POST(url, data) { var headers ... user experience (show errors, etc) See Question&Answers more detail:os...
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