Trending questions in TypeSript

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Typescript: Property "XXX" does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes

Double check the newly added object types. ...READ MORE

Jun 8, 2022 in TypeSript by Nina
 • 3,020 points • 17,854 views
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1 answer

TypeScript error: "'Foo' only refers to a type, but is being used as a value here."?

To do type checking at runtime with ...READ MORE

Jun 8, 2022 in TypeSript by Nina
 • 3,020 points • 13,735 views
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What is "not assignable to parameter of type never" error in TypeScript?

All you have to do is define ...READ MORE

May 31, 2022 in TypeSript by Nina
 • 3,020 points • 12,383 views
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How to fix Definition for rule typescript-eslint no-use-before-declare was not found eslint typescript-eslint no-use-before-declare

Well according to this page, this rule is ...READ MORE

Jun 1, 2022 in TypeSript by Nina
 • 3,020 points • 6,711 views
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Typescript: TS7006: Parameter 'xxx' implicitly has an 'any' type

You are using the --noImplicitAny and TypeScript doesn't know ...READ MORE

Jun 10, 2022 in TypeSript by Nina
 • 3,020 points • 5,619 views
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TypeScript - ',' expected.ts(1005)

You can't put statements in JSX curly braces, only expressions. You ...READ MORE

Jun 9, 2022 in TypeSript by Nina
 • 3,020 points • 5,366 views
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TypeScript error TS2304: cannot find name ' require'

Here's a really easy work around: declare var ...READ MORE

May 31, 2022 in TypeSript by Nina
 • 3,020 points • 5,613 views
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TypeScript TS7015: Element implicitly has an 'any' type because index expression is not of type 'number'

If you want a key/value data structure ...READ MORE

Jun 7, 2022 in TypeSript by Nina
 • 3,020 points • 5,119 views
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Typescript: Debug Failure. False expression: Non-string value passed to `ts.resolveTypeReferenceDirective`

The same as a couple of days ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 1,741 views
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1 answer

Typescript: Can't find names - Error: cannot find name

A known issue: https://github.com/angular/angular/issues/4902 Core reason: the .d.ts file implicitly included ...READ MORE

Jun 7, 2022 in TypeSript by Nina
 • 3,020 points • 4,225 views
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TypeScript ES6: import module "File is not a module error"

We need the export, as a part of ...READ MORE

Jun 7, 2022 in TypeSript by Nina
 • 3,020 points • 4,092 views
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Javascript Arrays Opposite of Includes

What is the proper approach to remove ...READ MORE

Aug 8, 2022 in TypeSript by krishna
 • 2,820 points • 794 views
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1 answer

How to use useState hook in React with typescript correctly?

You can set a string type for it Explicit way: const ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 826 views
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What is record in TypeScript

A Record<K, T> is an object type whose property ...READ MORE

Jun 7, 2022 in TypeSript by Nina
 • 3,020 points • 3,311 views
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1 answer

Why is Event.target not Element in Typescript?

JLRishe's answer is correct, so I simply ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 754 views
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1 answer

TypeScript: 'tsc command not found'

A few tips in order restart the terminal restart ...READ MORE

Jun 7, 2022 in TypeSript by Nina
 • 3,020 points • 3,288 views
0 votes
1 answer

How to define string literal union type from constants in Typescript

You can also use enum for this ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 712 views
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1 answer

Using TypeScript, and Object.assign gives me an error "property 'assign' does not exist on type 'ObjectConstructor'"

You can use type assertion, like this: (<any>Object).as ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 714 views
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1 answer

The Angular Compiler requires TypeScript >=3.4.0 and <3.5.0 but 3.5.3 was found instead

Run this script to find exact version npm ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 602 views
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1 answer

Redux + TypeScript -> Error: A case reducer on a non-draftable value must not return undefined redux

The actual problem is with this line: state ...READ MORE

Jun 16, 2022 in TypeSript by Nina
 • 3,020 points • 2,622 views
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1 answer

Experimental decorators warning in TypeScript compilation

Although VS Code is an excellent editor ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 455 views
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0 answers

Typescript says: "types '"a"' and '"b"' have no overlap". What does it mean?

const value = Math.random() < 0.5 ? ...READ MORE

Jul 5, 2022 in TypeSript by Logan
 • 2,140 points • 1,711 views
0 votes
1 answer

What is the question mark for in a Typescript parameter name?

It is to mark the parameter as optional. TypeScript ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 281 views
0 votes
1 answer

Is there any official Typescript definition for fabric.js?

Typically, packages in Definitely Typed aren't official ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 239 views
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1 answer

Using spread syntax and new Set() with typescript

This seems to be a typescript ES6 ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 214 views
0 votes
1 answer

Is TypeScript really a superset of JavaScript?

The purpose of TypeScript is to have ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 211 views
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0 answers

Angular & eslint - Definition for rule '@typescript-eslint/space-infix-ops' was not found

I recently removed the tslint from my ...READ MORE

Aug 1, 2022 in TypeSript by Elton
 • 400 points • 321 views
0 votes
1 answer

What does the @ (at sign) mean in the latest TypeScript (presumably v1.5) example?

The big news this week is the ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 184 views
0 votes
1 answer

How to use document.getElementById() method in TypeScript?

Typescript will force you to check the ...READ MORE

Jun 15, 2022 in TypeSript by Nina
 • 3,020 points • 2,238 views
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1 answer

Get typescript definition files via bower?

It is possible with bower. First install bower ...READ MORE

Aug 3, 2022 in TypeSript by Abhinaya
 • 1,160 points • 65 views
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What is the way of declaring an array in JavaScript?

These are some of the way to ...READ MORE

Aug 3, 2022 in TypeSript by krishna
 • 2,820 points • 64 views
0 votes
1 answer

Typescript Errors: How do I ignore the error "property does not exist on value of type"

The easiest solution to this is: (y as ...READ MORE

May 31, 2022 in TypeSript by Nina
 • 3,020 points • 2,740 views
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Typescript open-api cilent generation and usage of `fetch`

I am trying to generate a typescript ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 583 views
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Why typescript complains that XXX is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint X?

My code is this: export interface TreeItem { ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 471 views
0 votes
1 answer

Typescript compiler can't find node with yarn - Cannot find type definition file for 'node'

I solved it on my computer by ...READ MORE

Jun 22, 2022 in TypeSript by Nina
 • 3,020 points • 1,512 views
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Typescript: Changing the definition of some third party types d.ts

I am a little bit lost how ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 277 views
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TypeScript types to restrict array values

Can I use TypeScript types to restrict ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 226 views
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Why typescript complains that XXX is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint X?

My code is this: export interface TreeItem { ...READ MORE

Jul 13, 2022 in TypeSript by Logan
 • 2,140 points • 408 views
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TypeScript type cast & D3.js errors

Now, how should I solve this/typecast this? import ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 190 views
0 votes
1 answer

Error TS1005: ';' expected. TypeScript for First Build error rxjs inside node_modules

 I investigated that rxjs released a new version: 6.4.0. And ...READ MORE

Jun 10, 2022 in TypeSript by Nina
 • 3,020 points • 1,806 views
0 votes
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How can I include pug templates in compiled typescript?

My nodejs based application uses Pug for ...READ MORE

Jul 13, 2022 in TypeSript by Logan
 • 2,140 points • 397 views
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0 answers

User-Defined Extended Enums in TypeScript

I am writing a TypeScript library that ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 131 views
0 votes
0 answers

TypeScript: Typing the result of an external module's non-mutating extension function

Let's say I'm using external package "foo". ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 113 views
0 votes
1 answer

Interface type check with Typescript

You can achieve what you want without ...READ MORE

May 31, 2022 in TypeSript by Nina
 • 3,020 points • 2,132 views
0 votes
0 answers

Jest + Typescript cannot mock AWS transcribe function

I've been trying to figure out how ...READ MORE

Jul 14, 2022 in TypeSript by Logan
 • 2,140 points • 251 views
0 votes
0 answers

Typescript: Clicking 'X' doesn't successfully close my popup banner

I've created a popup banner with the ...READ MORE

Jul 14, 2022 in TypeSript by Logan
 • 2,140 points • 219 views
0 votes
0 answers

TypeScript -- new Image() from global scope

I have a class MYMODULE.Image{}, but I ...READ MORE

Jul 13, 2022 in TypeSript by Logan
 • 2,140 points • 261 views
0 votes
0 answers

What is TypeScript and why would I use it in place of JavaScript?

Can you please describe what the TypeScript ...READ MORE

Jul 18, 2022 in TypeSript by Logan
 • 2,140 points • 45 views
0 votes
0 answers

ngx-image-cropper imageloaded() not passing any image data to typescript file event method

I'm using ngx-image-cropper to load and crop images. According ...READ MORE

Jul 5, 2022 in TypeSript by Logan
 • 2,140 points • 493 views
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