Go wasm 学习相关demo，主要功能包括:md5处理，图像旋转，excel和csv生成,图像缩略图，gzip压缩和解压，切片上传和切片下载

Simple util that will return the gzip uncompressed filesize

Package archive is a convenience package for walking/enumerating the contents of zip files, tar files, and compressed tar files through callback functions.