How to Solve ‘Property ‘X’ does not exist on type ‘Y’’ Error in TypeScript

In TypeScript, the error message ‘Property ‘X’ does not exist on type ‘Y’’ is one of the most frequent gotchas for developers, especially for those who are new to the language. In this write-up, we’ll explore what this error message means, why it occurs, and provide concrete examples on how to solve it.

Understanding the Error

This error message typically occurs due to type mismatches between your object and the type annotation you’ve provided. TypeScript, being a…