maplibre-gl/src/util/offscreen_canvas_supported.ts

BSD licensed community fork of mapbox-gl, a WebGL interactive maps library

let supportsOffscreenCanvas: boolean;

export function offscreenCanvasSupported(): boolean {
    supportsOffscreenCanvas ??= typeof OffscreenCanvas !== 'undefined' &&
            new OffscreenCanvas(1, 1).getContext('2d') &&
            typeof createImageBitmap === 'function';

    return supportsOffscreenCanvas;
}