some package which base on spm3.6 .
$ npm install spm -gMake sure your spm version is 3.6.x .
# !-- 1. enter directory
$ cd case01-filesaver
# !-- 2. debug
$ spm server
$ open http://127.0.0.1:8000/
# !-- 3. build
$ spm build
$ open dist/index.html