README.md

jscs-ember-deprecations

This is a JSCS plugin to include errors for features that are deprecated in Ember.js

Installation

npm install jscs-ember-deprecations --save-dev

You'll also need to tell JSCS to load the plugin. Modify your .jscsrc file to include

"plugins": [
  "jscs-ember-deprecations"
],
"disallowObjectController": true,
"disallowInstanceInInitializer": true,
"disallowPrototypeExtension": true,
"disallowAtEachLeafNode": true,
// ...

If you invoke JSCS with --fix (see http://jscs.info/overview#cli) some deprecation errors can be fixed automatically.

See Supported deprecations for valid keys

Why

Migrating to a newer Ember version can be tricky if you haven't already gone back and removed all uses of deprecated features. Instead, this plugin intends to enable a migration path in a codebase, where developers can be warned when they use deprecated features.

A sample use case is to:

• Use a tool like Lint Review to automagically annotate pull requests. Developers will be warned if they're using a feature that is deprecated. Put these "aspirational" rules in .toolbot_jscsrc
• Use broccoli-jscs so that JSCS gets run at the same time you're running unit tests. Put rules that are "mandatory" in your codebase's .jscsrc. Any violations of those rules will result in the test suite failing.

This way a codebase can be gradually brought into compliance over time.

Supported deprecations

Deprecations added in Ember 1.11

• disallowObjectController will warn you if you use the deprecated Ember.ObjectController. See http://emberjs.com/deprecations/v1.x/#toc_objectcontroller for details.

• disallowInstanceInInitializer will warn you if you are looking up instances within an initializer. See http://emberjs.com/deprecations/v1.x/#toc_access-to-instances-in-initializers for details.

Deprecations added in Ember 1.12

• disallowCoreView will warn you if you use the deprecated Ember.CoreView. See emberjs/ember.js#10585 for details.

• disallowEmberTryCatch will warn you if you use the deprecated Ember.tryCatch or Ember.tryCatchFinally helpers. See emberjs/ember.js#10667 for details.

• disallowEmberRequired will warn you if you use the deprecated Ember.required() helper. See emberjs/ember.js#10668 for details.

• disallowDualGetterSetter will warn you if you use a dual setter/getter function argument to Ember.computed(). See http://emberjs.com/deprecations/v1.x/#toc_computed-properties-with-a-shared-getter-and-setter for details.

Deprecations added in Ember 1.13

• disallowAtEachLeafNode will warn you if you use the deprecated foo.@each notation. See emberjs/ember.js#11994 for details.

• disallowArrayComputed will warn you if you use the deprecated Ember.ArrayComputedProperty or Ember.arrayComputed(). See emberjs/ember.js#11403 for details.

• disallowReduceComputed will warn you if you use the deprecated Ember.ReduceComputedProperty or Ember.reduceComputed(). See emberjs/ember.js#11403 for details.

• disallowEmberCreate will warn you if you use the deprecated Ember.create() function. See http://emberjs.com/deprecations/v1.x/#toc_ember-create for details.

• disallowEmberKeys will warn you if you use the deprecated Ember.keys() function. See http://emberjs.com/deprecations/v1.x/#toc_ember-keys for details.

• disallowEmberOneway will warn you if you use the deprecated Ember.oneWay() function. See http://emberjs.com/deprecations/v1.x/#toc_ember-oneway for details.

• disallowEmberView will warn you if you use the deprecated Ember.View, Ember.LinkView, Ember.Select, Ember.ContainerView, or Ember.CollectionView classes. See http://emberjs.com/deprecations/v1.x/#toc_ember-view for details.

• disallowPositionalParamsExtend will warn you if you use positionalParams within .extend() instead of setting it as a static property on the class itself. See http://emberjs.com/deprecations/v1.x/#toc_set-code-positionalparams-code-as-a-static-property-on-the-class for details.

• disallowBeforeObserver will warn you if you use the deprecated Ember.addBeforeObserver(), Ember.removeBeforeObserver(), or Ember.beforeObserversFor() functions. Additionally, it will warn you if you use the deprecated .observesBefore() prototype extenion. Note that .observesBefore() is also deprecated in disallowPrototypeExtension. See http://emberjs.com/deprecations/v1.x/#toc_beforeobserver for details.

• disallowImmediateObserver will warn you if you use the deprecated Ember.immediateObserver helper. See http://emberjs.com/deprecations/v1.x/#toc_ember-immediateobserver for details.

• disallowArrayController will warn you if you use the deprecated Ember.ArrayController. See http://emberjs.com/deprecations/v1.x/#toc_arraycontroller for details.

• disallowControllerNeeds will warn you if you're doing dependency injection via the needs property on a controller. See http://emberjs.com/deprecations/v1.x/#toc_controller-needs for details.

• disallowFreezableMixin will warn you if you use the deprecated Ember.Freezable mixin. See http://emberjs.com/deprecations/v1.x/#toc_ember-freezeable for details.

• disallowObserverArgumentOrdering requires that Ember.observer() takes callable argument as the final argument. See http://emberjs.com/deprecations/v1.x/#toc_reversed-ember-observer-arguments for details.

• disallowCreateWithMixins will warn you if you use the deprecated Ember.Object.createWithMixins method. See http://emberjs.com/deprecations/v1.x/#toc_ember-createwithmixins for details.

• disallowComputedAny will warn you if you use the deprecated Ember.computed.any() helper. See http://emberjs.com/deprecations/v1.x/#toc_ember-computed-any for details.

• disallowHandlebarsHelpers will warn you if you use the deprecated Ember.HTMLBars.makeBoundHelper() or Ember.Handlebars.registerHelper() helpers. See http://emberjs.com/deprecations/v1.x/#toc_handlebars-htmlbars-helpers for details.

Deprecations added in Ember 2.0

None. Ember 2.0 removed support for the above deprecations.

Deprecations added in Ember 2.1

• disallowInitializerArity will warn you if you have more than 1 argument to an initializer. See http://emberjs.com/deprecations/v2.x/#toc_initializer-arity for details.

• disallowPrivateRegistryProperty will warn you if you use one of the private app.registry.* deprecations. See http://emberjs.com/deprecations/v2.x/#toc_ember-application-registry-ember-applicationinstance-registry for details.

• disallowAppInstanceContainer will warn you if you use the private app.container.lookup() depreprecation in an initializer. See http://emberjs.com/deprecations/v2.x/#toc_ember-applicationinstance-container for details.

• disallowDebugMissingArguments will warn you if you use one of the Ember.warn(), Ember.deprecate(), Ember.deprecateFunc() or Ember.computed.deprecatingAlias() function without passing in an options object that at a minimum contains an id property. See http://emberjs.com/deprecations/v2.x/#toc_ember-debug-function-options for details.

• disallowDefaultLayout will warn you if you use the defaultLayout property inside a Component. See http://emberjs.com/deprecations/v2.x/#toc_ember-component-defaultlayout for details.

• disallowCurrentState will warn you if you use the private currentState or _currentState property inside a Component. See http://emberjs.com/deprecations/v2.x/#toc_ember-component-currentstate for details.

Other Ember best practices

• disallowPrototypeExtension will warn you if you are using .property(), .observes() or observesBefore(). See http://guides.emberjs.com/v1.10.0/configuring-ember/disabling-prototype-extensions/#toc_functions for details.

Deprecations added in Ember 2.3

• disallowInjectedContainerAccess will warn you if you are using the injected container (this.container). See http://emberjs.com/deprecations/v2.x/#toc_injected-container-access for details.

License

This library is lovingly brought to you by @minichate. It is released under the MIT license.