Function canvasToDataURL

src/renderer/src/utils/exporter.ts:74–76

(canvas: HTMLCanvasElement, type: string = 'image/png')

 * 将 canvas 转换为 data URL
 */
export function canvasToDataURL(canvas: HTMLCanvasElement, type: string = 'image/png'): string {
  return canvas.toDataURL(type)
}

/**
 * 将 data URL 转换为 blob（避免 CSP 问题）