Generated code is ES6

[Kobzol]

Could you please ship ES5 code (in the dist folder)?
The ES6 can cause problems with browser, UglifyJS and various other tools.
It should be enough to change target in tsconfig.json to es3 or es5.

[m0a]

sorry. dist directory is dummy. will delete it
direct use .ts

[Kobzol]

Deleting dist from this repository doesn't help, you still have the dist folder in package.json and you build it when you publish the package. A simpler fix would be to specify target: "es5" in tsconfig.json :-)