Update brfs to the latest version 🚀

Version 2.0.0 of brfs was just published.

Dependency	`[brfs](https://github.com/substack/brfs)`
Current Version	1.6.1
Type	devDependency

The version 2.0.0 is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

It might be worth looking into these changes and trying to get this project onto the latest version of brfs.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

Release Notes

v2.0.0

Update to static-module 3. This adds scope tracking, and keeps fs requires around if they are still used.

Scope tracking

Previously the below:

var fs = require('fs')
function x (fs) { return fs.readFileSync(__filename) }
x({ readFileSync: function () { return 10 } })

would compile the fs.readFileSync() call, even though it's not actually referring to the fs module. This may seem contrived but it can happen easily if a file was minified before being passed to brfs, and a million different variables are all named e.

Retain used requires

Previously the below:

var fs = require('fs')
fs.readFileSync(someDynamicValue())
fs.readFileSync(__filename)

would compile to:

fs.readFileSync(someDynamicValue())
Buffer('...', 'base64')

But now it compiles to:

var fs = require('fs')
fs.readFileSync(someDynamicValue())
Buffer('...', 'base64')

This is primarily helpful when bundling for node or electron.

Commits

The new version differs by 5 commits.

7e13064 2.0.0
5920e0f Add Node 10 to CI.
27be82e Add test for scope tracking features in static-module@3
a365cb7 Merge pull request #89 from browserify/static-module-3
8149ee7 Update static-module to v3 with scope tracking.

See the full diff

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