Thursday, February 19, 2026
Latest:
  • Wichtige wörter für B1 prüfung
  • What are the main differences between ApplicationContext and BeanFactory?
  • German B1 Word list
  • How does Lazy annotation work in Spring?
  • How Spring framework resolves circular dependencies?
Upokary

Upokary

Quality information

  • Health
  • Life
  • Fashion
  • Food
  • Code
  • English
  • বাংলা
Technology 

Type ‘null’ is not assignable to type ‘T’

Published: December 1, 2021 JavaScript, TypeScript

We got into this issue when we tried to return null from a generic function. See the code segment below:

function bar(x: T): T {
  if(x === null){
     return null; 
  }   
}

Solution:

To solve this issue, we can amend the code like below:

function bar(x: T): T | null{
  if(x === null){
     return null; 
  }   
}

OR

function bar(x: T): T {
  if(x === null){
     return null as any; 
  }   
}

You May Also Like

How to get element by class name in JavaScript?

June 10, 2021 beroza

How to check variable is an object in JavaScript?

August 13, 2021 beroza

Useful docker commands

October 17, 2020 beroza

The following SDK component was not installed: sys-img-x86-addon-google_apis-google-21

December 4, 2018 beroza

How to install or setup WordPress multisite?

December 4, 2019 beroza

Big O Notation

June 22, 2023 beroza

How to raise exception for http errors in python?

September 2, 2019 beroza

java.lang.IllegalStateException: Ambiguous handler methods mapped for ‘/’

January 21, 2019 beroza

Write a program to find permutations

December 25, 2022 beroza

Why Upokary?

Upokary.com is a useful application in everyday life. It provides very handy information regarding every aspect of life. Each and every tip of upokary.com is meant to make life better.

Upokary tools

  • Youtube thumbnail
  • Youtube video downloader

Useful Links

  • Handy code
  • Technology
  • People
  • Programming
  • Quote
  • Travel
  • WordPress
  • IELTS
  • Kids

Pages

  • Sitemap
  • Privacy policy
  • About us
  • Contact us

Support

For any kind of query or question please drop a message in the following email: upokary@gmail.com
Copyright © 2026 Upokary. All rights reserved.