VS Code refactoring in JS doesn't seem to work in unopened files

When trying to refactor function names, variable names, or class names within all files using F2 (as shown at https://code.visualstudio.com/docs/editor/refactoring#_rename-symbol), I only seem to have success when those other files are open in the editor. If they're closed, VS Code won't rename those instances. Am I missing something?

Before rename with files closed:

After rename with files closed:

Before rename with files open:

After rename with files open:

I tried looking into settings for refactor or replace, but didn't find anything that wasn't enabled that obviously should be. If I successfully rename something when a file is open, undo it, then close the file and re-attempt the refactor, it fails again.

EDIT: I submitted this as a bug to the vscode team on github: https://github.com/microsoft/vscode/issues/146120

Thanks to Andrii Dieiev on Github.

https://github.com/microsoft/vscode/issues/146120#issuecomment-1079793615

Adding a basic jsconfig.json file is enough to ensure all files in our project are interpreted as part of the workspace:

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es6"
  },
  "exclude": ["node_modules"]
}