window

addEventListener

load

function

ev

var

loading

document

querySelector

#loading

);

loading

textContent

Loading entrypoint...

_flutter

loader

loadEntrypoint

({

serviceWorker

serviceWorkerVersion

serviceWorkerVersion

},

onEntrypointLoaded

async

function

engineInitializer

loading

textContent

Initializing engine...

let

appRunner

await

engineInitializer

initializeEngine

();

loading

textContent