Web Reference: This post provides a step-by-step guide on how to fix the error message "Type annotations can only be used in TypeScript files" and resolve issues related to TypeScript syntax in JavaScript files. Dec 24, 2022 · I am using nest js as my backend and i get this type annotation error often. I am unable to solve this error. The file extension by default is .ts file. I even get this error when i use React with typecript. Is there any other options to solve this problem without disabling the validation. Learn how to fix the `Type annotations can only be used in TypeScript files` error in your React project with a simple solution.---This video is based on the...
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