Does Playwright Test support globalThis? (typescript/javascript)

1. I defined in global.d.ts file as the following

declare global {
  var some: string
}

2. I assigned the value in global.setup.ts as the following

globalThis.some="fff"

3. I referred it in test file as the following

console.log(globalThis.some)

And I did not see fff in console log, and neither it reports any error.

Any clue?

expecting seeing fff in console log.