yeoman webext-typescript

generates a basic firefox webextension with typescript support

$ npm install -g yo
$ npm install -g generator-webext-typescript
$ mkdir extension
$ cd extension
$ yo webext-typescript myExtensionName myExtension@example.com http://example.com

for developing, run

$ npm run watch &
$ npm run firefox:start

for packaging, run

$ npm run build

for more information (signing etc.), see the Documentation at mozilla