npm install
npm test
Then navigate to example.html.
The example-v{1,4}.js demonstrate that treeshaking works as expected (webpack output below):
Asset Size Chunks Chunk Names
all.js 8.54 KiB 0 [emitted] all
v1.js 2.6 KiB 1 [emitted] v1
v4.js 2 KiB 2 [emitted] v4