Examples - code block highlights

[Maksims]

It would be great to label a block of code (line ranges), so that it would highlight it and show nice UI. As many examples have repeating code, and relevant blocks of code are lost in long files.

[kungfooman]

Monaco supports for instance // #region App Creation with a closing // #endregion:

async function example({ canvas, deviceType, glslangPath, twgslPath }) {

    // #region App Creation
    const gfxOptions = {
        deviceTypes: [deviceType],
        glslangUrl: glslangPath + 'glslang.js',
        twgslUrl: twgslPath + 'twgsl.js'
    };

    const device = await pc.createGraphicsDevice(canvas, gfxOptions);
    const createOptions = new pc.AppOptions();
    createOptions.graphicsDevice = device;

    createOptions.componentSystems = [
        pc.RenderComponentSystem,
        pc.CameraComponentSystem,
        pc.LightComponentSystem
    ];
    createOptions.resourceHandlers = [
        // @ts-ignore
        pc.TextureHandler,
        // @ts-ignore
        pc.ContainerHandler
    ];

    const app = new pc.AppBase(canvas);
    app.init(createOptions);
    app.start();

    // Set the canvas to fill the window and automatically change resolution to be the same as the canvas size
    app.setCanvasFillMode(pc.FILLMODE_FILL_WINDOW);
    app.setCanvasResolution(pc.RESOLUTION_AUTO);

    // Ensure canvas is resized when window changes size
    const resize = () => app.resizeCanvas();
    window.addEventListener('resize', resize);
    app.on('destroy', () => {
        window.removeEventListener('resize', resize);
    });
    // #endregion

    // create box entity
    const box = new pc.Entity('cube');
    box.addComponent('render', {
        type: 'box'
    });
    app.root.addChild(box);

    // create camera entity
    const camera = new pc.Entity('camera');
    camera.addComponent('camera', {
        clearColor: new pc.Color(0.5, 0.6, 0.9)
    });
    app.root.addChild(camera);
    camera.setPosition(0, 0, 3);

    // create directional light entity
    const light = new pc.Entity('light');
    light.addComponent('light');
    app.root.addChild(light);
    light.setEulerAngles(45, 0, 0);

    // rotate the box according to the delta time since the last frame
    app.on('update', (/** @type {number} */ dt) => box.rotate(10 * dt, 20 * dt, 30 * dt));
    return app;
}

Then it would look like:

But not sure what you mean with highlight + nice UI, something else than these region code folding blocks?

[Maksims]

If it would be possible to change background (lines background) color of those blocks, to make the whole block pop out?