pub const START_URL: &str = "about:blank";Expand description
The page a real launch opens, as Puppeteer and Playwright do.
Without a URL, Chrome opens its New Tab page and Microsoft Edge opens the
MSN New Tab page plus edge://welcome-new-profile/, whose flow closes the
window and exits the browser a few seconds after launch (measured with
Edge 153, experiments/issue-103/edge-headful.mjs). A URL is not a switch,
so both engines see the same command line a person gets from chrome about:blank. A start URL among the caller’s arguments replaces it.