browser build does not work out of the box for webpack

[andykais]

This isa:

• Bug Report

Which concerns:

• flow-runtime
• The documentation website

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I am not sure about rollup, but using flow-runtime in browser, compiled with webpack does not work out of the box. The user has to either:

• import 'regenerator-runtime' at the entrypoint
• webpack config resolver.alias: { 'flow-runtime': 'flow-runtime/dist/flow-runtime.es2015.js' }
  otherwise the browser throws the following error.

Uncaught Error: Cannot find module 'regenerator-runtime'
    at webpackMissingModule (webpack:///./node_modules/flow-runtime/dist/flow-runtime.umd.js?:13)

I have found the issue #29 which created a separate browser bundle, though it appears regenerator-runtime was originally part of that bundle. If this separation intentional, then perhaps the documentation should be updated to explain how to fix this. Otherwise, regenerator-runtime is not being added to the browser bundle like it should be.