'Using explicit wait with Async mode in WebDriverIO

If I am using the async mode in WebDriver IO, Given the following test case:

search the user name input and fill it with the user name

1 it("Explicit Wait Example", async () => {
2    const userNameInput = await $('//input[@id="username"]');
3    await userNameInput.waitForExist();
4    await userNameInput.setValue("My User Name");
5  });

since the await function will wait the promise (line 2), is needed to use the waitForExist() (line 3)? or Can I avoid it?



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