Idea: Estimate bundle sizes

This issue is a:

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

Environment

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

Start in the RequireJS tab and Bundle Generation tool, where the bundle module lists and raw sources are available. Check whether concatenating those resources and passing them through uglifyjs2 produces useful estimates. Done means either displaying estimates in Bundle Generation or documenting that the results are too inaccurate to use.