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1 Answer

113 Views

Asked: Dec 23,2019In: Type Script

How to create an TypeScript static constant in a class?

How to create an TypeScript static constant in a class? That mean I can refer a constant without initialize the class. This is my class: export class CallTree{ public static readonly active = 1; ...

angular typescript

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1 Answer

113 Views

0 Vote

0 Answer

192 Views

Asked: Dec 23,2019In: Type Script

looping through array of promises with setInterval and return single promise after all resolves so the return TS-type does not change

I have a seeds file running functions to create local data, however, the createdAt field is readonly, so I need to change the logic such that the logic runs every second therefore creating a ...

javascript typescript promise

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0 Answer

192 Views

0 Vote

1 Answer

110 Views

Asked: Dec 23,2019In: Type Script

Is there a difference between initializing at declare and assigning after declare

Here's the code : [Initialize ver.] interface ContactList { group?: string, list?: { name: string, tel: string }[] } const myList: ContactList = { group: 'Friends', list: [{ ...

typescript

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1 Answer

110 Views

0 Vote

0 Answer

188 Views

Asked: Dec 23,2019In: Type Script

Antd Custom validator and validateFields are not working together as expected

I'm working on a form (Ant Design <Form>) where I want a custom validation of phone number (as it depends on country field and has some extra logic), and other fields validated by antd built-in ...

reactjs typescript forms antd

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0 Answer

188 Views

0 Vote

1 Answer

68 Views

Asked: Dec 23,2019In: Type Script

Typescript Class Variable Not Updating / Retaining Value

I am trying to create a class that will fetch / cache users from my Firestore database. For some reason, I can't seem to save or expose the previous promise that was created. Here is my class: export ...

javascript typescript react-native

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1 Answer

68 Views

0 Vote

0 Answer

0 Views

0 Vote

0 Answer

75 Views

Asked: Dec 23,2019In: Type Script

typescript angular: can't understand the isisue of “get and set accessor mush have the same type”

In my angular project, I have a service as following: @Injectable({ providedIn: "root"}) export class NameDataService { private _name$: Subject<Name[]> = new Subject(); private ...

typescript setter getter

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75 Views

0 Vote

1 Answer

70 Views

Asked: Dec 23,2019In: Type Script

How can I get catchError message from service method in component?

getFinanceDetails(clientId: string, type: OnvioClientUpdateType): Observable <ClientFinance> { return this.getClientContactDetailsById(clientId, type).pipe(mergeMap((data: any) => { ...

angular typescript

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1 Answer

70 Views

0 Vote

0 Answer

61 Views

Asked: Dec 23,2019In: Type Script

Workaround for “no-unnecessary-generics” rule from dtslint if I really need some properties from extended type

Rule details: Forbids a function to use a generic type parameter only once. Generic type parameters allow you to relate the type of one thing to another; if they are used only once, they can be ...

typescript typescript-typings

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0 Answer

61 Views

0 Vote

0 Answer

70 Views

Asked: Dec 23,2019In: Type Script

Why Object check by key is not recognized by typescript compiler?

I have an object like this in typescript": "3.5.2 enum setting02Steps { CSV_UPLOAD, CSV_EDITION, COMPLETED } enum setting02Tabs { TABLE, TREE, CSV } interface Setting02State ...

typescript

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0 Answer

70 Views

0 Vote

1 Answer

84 Views

Asked: Dec 23,2019In: Type Script

Angular async pipe with rxjs switchmap

this.users$ = this.http.getUsers(criteria).pipe( switchMap(user => this.http.getUserData(user.id)), map(res => res.data) ); I want to assign res.data to user.data But the result is only res....

angular typescript rxjs async-pipe

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