This documentation is a guide about how to update ThinkJS from 2.1 to 2.2, look at here if you want to update from 2.0 to 2.1.
The version 2.2 is compatible with version 2.01. The new version has appended more functions and changed something lightly, you can reference it's ChangeLog to know what has changed.
Change Thinkjs's version to 2.2.x in package.json.
Run npm install source-map-support --save to install dependency in the project folder.
If it's typescript project, it needs run npm install source-map --save.
If your project is ES2015+ (not TypeScript), modify compile command as following in package.json:
babel --presets es2015-loose,stage-1 --plugins transform-runtime src/ --out-dir app/ --source-mapsapp/ folderdelete app/ folder in the project and run npm start to restart project.