check this snippet: interface Foo { id: string; } const fooFunc = (arr: Foo[]): Foo[] => arr .map((item: Foo): Foo | null => { const so
The usual examples of how to break a computation and release using setTimeout() seem to rely on having a shallow (1-deep) call stack. But what about when you ar
I am working on an express app(in typescript) and a react app bootstrapped with create-react-app(in js). The directory structure is here. The server directory c
I'm trying to make a request in Angular and I know that the HTTP response will not be in JSON but in text. However, Angular seems to be expecting a JSON respons
why I get this error: Type 'ListRenderItem<IPhotos>' is not assignable to type 'ListRenderItem<unknown> Code: import { Dimensions, Image, ListRend
I’m trying to add a property to express request object from a middleware using typescript. However I can’t figure out how to add extra properties to
I'm trying to extend the color palette that mui provides. The overriding of primary, secondary etc colors works well but if I want to create a custom set of col
I've created a very simple custom hook: export function useI18n() : [ string, Dispatch<SetStateAction<string>> ] { const [ language, setLanguage
1st error: Namespace '"D:/desktop/Programming/oauthAngular/node_modules/firebase/compat/index"' has no exported member 'User'. 2nd error: Type 'import("D:/desk
I've created a very simple custom hook: export function useI18n() : [ string, Dispatch<SetStateAction<string>> ] { const [ language, setLanguage
How can I filter the material data table with specific column ? public dataSource; this.dataSource = new MatTableDataSource(this.items); this.dataSo
Note : I'm not a front end dev, even if I do a bit of it. If anything you see can be improved, do not hesitate to share ;) Strange behavior here, I can't find o
I feel like the preserveModulesRoot option while using preserveModules does not work as it should. Let's say I have a src/index.ts and a bunch of src/components
Please have a look at the validate method inside the elfe-if condition in the below code. I am unable to call the useLocation method of react-router-dom. I have
Using: ts-node: 10.7.0 MongoDB: 4.4.1 GraphQL: 16.3 I am trying to get a response back from a mongo db request. The request is successfully coming back, but typ
I just started using create-react-app with typescript create-react-app my-app --scripts-version=react-scripts-ts and the default tslint.json configuration d
Let's suppose there's a typing file for library X which includes some interfaces. interface I1 { x: any; } interface I2 { y: { a: I1,
In the following line of code: internalWhiteList = process.env.INTERNAL_IP_WHITELIST.split( ',' ) I get an error saying, Object is possibly undefined. env va
Here is my code async getAll(): Promise<GetAllUserData[]> { return await dbQuery(); // dbQuery returns User[] } class User { id: number; name
I'm trying to run a test project on the server. Gives an error message ~/www/ork-wiki-admin-back-test $ npm run test-start > [email protected] test-