Monday, December 15, 2025
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

Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array)) in Java

May 26, 2020 beroza

How to dynamically add property of nested object JavaScript

July 29, 2021 beroza

Write a JavaScript curry function to add n numbers

April 23, 2022 beroza

Write a Program to Find Island Perimeter

January 15, 2023 beroza

Write a program to match decrement increment string

June 10, 2022 beroza

Difference between session.timeout.ms and max.poll.interval.ms for Kafka

June 9, 2020 beroza

What is CircleCI and why should we use it compare to other CI/CD?

January 13, 2021 beroza

How to delete an array element in JavaScript?

November 1, 2019 beroza

Write an efficient program to print prime numbers.

November 19, 2021 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 © 2025 Upokary. All rights reserved.