Errors when using decorators in Visual Studio Code

I've been having issues trying to compile TypeScript to JavaScript when using decorators. The error I get is this:

app.ts:11:7 - error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.

11 class Person {
         ~~~~~~

I've been searching here in StackOverflow for ways to fix it, and also on other websites, and nothing seemed to work for me. Here's what I've already tried:

• I already have "experimentalDecorators": true in my tsconfig.json file
• I added "javascript.implicitProjectConfig.experimentalDecorators": true in my settings file
• I tried disabling all my VSCode extensions
• I tried restarting VSCode multiple times and opening the project folders in multiple ways

I keep getting this same error anyways. My TypeScript version is 4.1.2.

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