Core Team Meeting Minutes - 2014/02/28

Although most of our collaboration takes place on Github, IRC (#emberjs on, and our Discourse site the Ember.js Core Team meets privately every Friday at 2pm EST/11am PST through Google Hangout for a weekly discussion of all things Ember.

If you have a topic you'd like to see covered, contact your favorite core team member and let them know!


@ebryn, @krisselden, @machty, @rwjblue, @stefanpenner, @tomdale, @trek, @wycats


Hello, Ghost

A few weeks ago @jacob4u2 reached out over twitter to let us know the popular Node.js-based blogging platform Ghost was looking to reinvent their admin interface and were discussing various browser JavaScript libraries. The ensuing discussion is a great read.

This week the Ghost team announced they'd be rebuilding in Ember.js. We're super geeked to see Ghost join Balanced, TravisCI, Discourse, and the rest of the great community of open source projects adopting Ember.js.

Thanks to everyone who chimed in on the discussion and the Ember.js community members who helped with advice, feedback, and tender loving care on Github, Twitter, and IRC.


  • @ebryn is going to do a video walkthrough of how he'd organize Ghost's admin interface
  • @rwjblue and @trek have been in #Ghost IRC and will keep that up
  • We'll ask the Ghost to team to draw our attention to PRs/Issues related to the migration

ES6ifying core

The migration of ember-metal, ember-runtime, and ember-debug to ES6-style modules is completed but not yet merged. In making large changes we're always especially cautious about accidentally breaking existing features, reducing performance, or increasing file size. Modularizing doesn't appear to have an effect on build speed or runtime performance, but did lead to a 5k min/gzip size increase that we're not happy with.

We're currently tracking down the various causes of size bloat and doing some cleanup to bring build size back to its previous size.


  • @rwjblue is going to do some cleanup and work with the transpiler maintainers to add some output improvements.

Features pending 'Go' decision.

The core team reviewed the following pull requests for future inclusion in the 1.6.x beta series:

  • ember-routing-named-substates #3655 Still blocked on module vs global object lookup form, which causes naming collisions.

    Resolution: will remain on canary until we've moved to modules and have a modular loader.

  • ember-handlebars-caps-lookup #3218 The original author has become unresponsive.

    Resolution: approach @mixonic to take over.

  • ember-routing-add-model-option #4293

    Resolution: It’s a go.

PR's/Issues To Review

  • Do not setup listeners for destroyed Arrays

    Sometimes due to timing in test suites, an array that has become destroyed (most likely due to a call to DS.Store#unloadAll in Ember Data) is assigned to an array proxy. This leads to an intermittent problem where an assertion is raised due to a destroyed array-like object no longer being considered an array by Ember.

    The root cause is that Ember.isArray relies on Ember.Array.detect to determine "Array-ness", and when Ember.Array.detect is used on a destroyed object false is returned because the meta information has been removed.

    Resolution: this error is the symptom, needs further investigation. @stefanpenner will investigate, and consult @krisselden and @ebryn

  • Resolve target issue on actions and with-controller

    Fixes issues where actions inside a {{with controller='foo'}} block bypass the FooController's action handling.

    Resolution: @ebryn, @krisselden, @wycats should review. Future changes that touch scope manipulation must be reviewed by @ebryn, @krisselden, @wycats.

  • The each helper checks that the metamorph tags have the same parent.

    In some cases, the browser may add or fix tags, which change the parentage of metamorph tags. This problem happens frequently when the developer doesn't not include the TBODY tag inside a table for example. This prevents the framework to update or clean the underlying DOM elements.

    This helps to detect the issue described in #4273.

    Resolution: @trek will offer some feedback on wording. This should be a total non-issue once we can emit HTMLBars.

  • Expose asObject to Ember.Handlebars.precompile

    Resolution: This belongs in handlebars, so reopen on Handlebars repo

  • FEATURE ember-handlebars-radio-buttons Implement radio buttons

    Resolution: hold off and talk about this at the next face to face.

  • Deprecate edge-case get and normalizeTuple behavior before fixes

    PR #3852 changes some edge case behavior for get and normalizeTuple. Ahead of those changes, this commit introduces deprecation notices.


    • Deprecate get for local paths on global contexts, only if they return data.
    • Deprecate normalizeTuple calls that return a non-global context and a simple global path.
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