How to test the application in Incognito mode using puppetter?

Question

When ever I tried using the below code, it launches a second window in incognito mode.

const context = await browser.createIncognitoBrowserContext();
const page = await context.newPage();

When I tried the below code, it launches the Incognito mode. But opens the url in regular chrome mode

    const browser = await puppeteer.launch({ 
    headless: false,
    args: [
          "--incognito"
    ]
});