When compiling my TypeScript file, I encountered an error stating that a block-scoped variable cannot be redeclared

In my Visual Studio Code, I have written just one line of code in my ex1.ts file:

let n: number = 10;

Upon compiling using the command tsc ex1.ts, the compiler successfully generates the ex1.js file. However, VSC promptly displays an error in the .ts file:

Cannot redeclare block-scoped variable 'n'.ts(2451)
ty1.js(1, 5): 'n' was also declared here.

VSC is indicating that there is another variable 'n', although it exists in the .js file rather than the .ts file. I thought TypeScript was meant for compiling .js files with strict typechecking. Why does it cause a conflict between unrelated .js and .ts files?

The error vanishes when I remove the .js file. These files are located within a straightforward "exercises" folder.

What could be a solution to this issue?

Answer №1

While coding in TypeScript, make sure to keep the .js file closed for a smoother experience.

I trust that you have already resolved this issue.

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