fix: fixes jest globals type error

This commit makes sure that no '@jest/globals' types missing error is
thrown when working in vscode.

__tests__/main.test.ts

@@ -2,7 +2,6 @@ import {wait} from '../src/wait'
 import * as process from 'process'
 import * as cp from 'child_process'
 import * as path from 'path'
-import {expect, test} from '@jest/globals'
 
 test('throws invalid number', async () => {
   const input = parseInt('foo', 10)