Typescript files to JS

I have project on express using typescript. When i try to use tsc to convert typescript files to js and create build folder, It’s creating and everything is fine but when i try to start server in build folder am getting error SyntaxError: Cannot use import statement outside a module.

>Solution :

please update more information about the steps that you did this.
But have a guide to do typescript.

this StackOverflow: Typescript: Cannot use import statement outside a module

orr Blog: https://bobbyhadz.com/blog/typescript-cannot-use-import-statement-outside-module#:~:text=To%20solve%20the%20error%20%22Cannot,run%20them%20directly%20with%20node%20.