Ionic 4 with Phaser 3 doesn't work?

Hi,
I have been trying to create a Phaser 3 with blank project in Ionic 4. In the Typescript code, upload to Phaser (let Phaser) using an Index.html.’s Script reference. The console on the screen shows that Phaser is running, but on the screen it shows absolutely nothing.

there is any Phaser 3 support in Ionic 4? Exist some examples in github but none of them work. I’m starting to think Phaser doesn’t run on Ionic 4