[3.0.0-alpha.0] Publishing ES and CJS

[roderickhsiao]

Summery

This is the first 3.0.0 alpha PR, tracked in a master issue #224

This PR change to es syntax and publish both cjs and es module.

Enhancement:

• Modernize package, publishing ES module and CJS

Breaking Changes

• Drop mixin usage
• Drop deprecated props followLink
• Remove Node 6 support

@kaesonho @redonkulus How do you think?

Put out the WIP PR to get some early feedback, also if I can get some help will be lovely.

[kaesonho]

Thank you for updating this! ❤️

I personally feel it makes sense to make breaking changes then bump major version.
May I know the scope for this PR? When you get you unblocked I can also help updating these.

React.lazy and intersection observer actually look higher priority to me as they are actual perf improvement!

[roderickhsiao]

@kaesonho I think you are the person who knows the viewport and lifecycle/context use case :) I could do most of the build/es module part, and will be good if you could help for the places you are most familiar to.

I think we could seclude several alpha release so people could test out and slowing moving to the direction we want.

[roderickhsiao]

Will work on this PR again cause its preventing user to use the new context API cause react can only use one type of context api now.

Discussed with Kaeson, we will probably do small alpha release for each features so we won't be blocked by the whole list.

[roderickhsiao]

Issue for multiple context: facebook/react#14005

[roderickhsiao]

Split into separate small PRs

[kaesonho]

LGTM! 💯 🎆 thank you for making this change!

[roderickhsiao]

@redonkulus Do you think the approach of progressively release small version make sense to you?
Do you have anything you wish to put in 3.0.0 so we can work on it in the same time? (I'm trying to coordinate with @kaesonho and @antonychan to see if we can move this forward).

[redonkulus]

@roderickhsiao I'm fine with this approach, makes more sense to do a series of small PR's, instead of one massive one.

[redonkulus]

I'd get rid of Grunt entirely in another PR.

[roderickhsiao]

Yes

[roderickhsiao]

Release Log

• Version: 3.0.0-alpha.0

Enhancement

• We are now exporting cjs and es build

Breaking changes

• Remove support for mixin
• Remove deprecated props followLink
• Drop Node 6 supports

Build

• Use babel-present-env instead of preset 2015
• Eslint integration
• use nyc instead of Istanbul for test code instrumentation