ts.imgpreload (npm): In a single page simple application, if there are too many images, preload them first and return a percentage, similar to the game's resource loading progress.  在单页简单应用(小型的H5游戏)中如果图片过多，先预加载并且返回百分比，类似游戏加载资源进度。
Keywords: typescript|imgpreload|react|vue