Learn
Learn
Learn web development from expert teachers. Build real projects, join our community, and accelerate your career
Get Started
Fullstack Rust Fullstack Node.js Fullstack D3 Fullstack React Fullstack React with TypeScript view all books →
The newline Guide to Building Your First GraphQL Server with Node and TypeScript
In this course, we'll show you how to create your first GraphQL server with Node.js and TypeScript
Enroll for free
Teach
Teach
Share your knowledge with others, earn money, and help people with their career
Apply Now
Apply To Teach A Course What Our Teachers Say
Amelia Wattenberger
Author of Fullstack D3
"Writing Fullstack D3 was a thoroughly enjoyable, fun process.

The writing was over before I knew it, and we've sold way more copies than I expected! Plus, the compliments from my peers have been really amazing."
Community
Community
Get help with programming projects, find collaborators, and make friends
Join Now
Explore new Communities Join our Discord Server What Our Students Say
Tools
Free Tools
AI-powered tools to help you land your dream job in tech
View All Tools
AI Job ListingsCurated AI and ML jobs updated weeklyATS Resume CheckerAI-powered resume analysis and optimizationStartup PerksFree credits & discounts for startups
Blog
Pricing
AI School
In-Person Event

Find and RegExp Match - How to Fix Object is possibly 'undefined' and Object is possibly 'null' Errors in TypeScript

Last Updated: August 3rd, 2022

Consider the following TypeScript code snippet: Let's assume that the list of cars is fetched from a remote API service. In this TypeScript code snippet, we... However, there are two problems with this TypeScript code snippet: