Issue with Tree Shaking

I'm having an issue with tree shaking, and I'm not sure why. I'm not certain this is a bug, but it may be. I'm using Create React App, and have a very large bundle. I've simplified the problem by just importing two modules, and still i have a bloated bundle.

Here's my only import line for giraffe:

```
import { newTable, Table } from '@influxdata/giraffe';
```

And here's how the bundle looks:


I took a peek into the code, and it seems as though they're es6 exports that should allow for tree shaking. Am I missing something?

Thanks!

Start by reproducing the Create React App bundle with the reported `@influxdata/giraffe` import of `newTable` and `Table`, then inspect the generated bundle and package exports. Trace why unrelated code remains included and document a confirmed cause or reproducible limitation; the issue is resolved when the tree-shaking behavior is explained and verified.

Written by the indexing model from the issue text.