About

A few tests on what webpack can tree shake

cases folder contains a few entry points that import things from their library folder.

All cases are built with 2 different webpack configs.

Note: right now the configs are identical except for the modules.rules settings in webpack.config.2.js that don't seem to have any effect.

Observations

cases/simple tree shaking works as expected
cases/simple-with-cjs is exactly the same as cases/simple, but library includes a commonjs module 'object-hash' instead of a simple es6 module. Even though it is never referenced it is still included.
- Seems like webpack assumes the module produces side effects
- how can i tell it that's not the case?
cases/simple-with-asm same as for case above - even though the asm module is never referenced it is included in the bundle

npm install
npm run build