Idea: Estimate bundle sizes

[DrewML]

This issue is a:

• Bug
• Feature suggestion
• Documentation issue
• Other (Please Specify)

Environment

Question	Answer
Magento version	N/A
Browser + version	N/A
node.js version (node -v)	N/A
npm version (npm -v)	N/A

Description

When recording in the RequireJS tab is completed, a user of this extension is presented with a configuration they can use with the RequireJS Optimizer.

At that time, we have the following data:

• A full list of which modules will be included in each bundle
• The raw source for each module

In a bundled file, the RequireJS Optimizer only makes 1 change to each included AMD module: it adds a string literal as the first value in the define call.

I suspect we could get a decent estimate of a final bundle's size by:

1. Collecting all resources that will be in the bundle
2. Concatenating all those sources together
3. Running the result through uglifyjs2 (used by the RequireJS Optimizer)

Expected result:

Either one of 2 results should come from this issue:

• Bundle size estimates are included in the Bundle Generation tool
• It's determined the estimates will be too incorrect to be useful