valaxy-addon-live2d/app/PixiApp.js

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import { Application } from '@pixi/app';
import { BatchRenderer, extensions } from '@pixi/core';
import { Extract } from '@pixi/extract';
import { TickerPlugin } from '@pixi/ticker';
extensions.add(TickerPlugin, Extract, BatchRenderer);
export class PixiApp extends Application {
    constructor(stats) {
        const view = document.getElementById('live2d-canvas');
        if (!view)
            console.warn('The view element with id "live2d" was not found in the document.');
        else if (!(view instanceof HTMLCanvasElement))
            console.warn('The view element must be an instance of HTMLCanvasElement.');
        super({
            view,
            antialias: true,
            resolution: 2,
            autoStart: true,
            autoDensity: true,
            backgroundAlpha: 0,
            width: 0,
            height: 0,
        });
        this.ticker.remove(this.render, this);
        this.ticker.add(() => {
            stats?.begin();
            this.render();
            stats?.end();
        });
    }
}