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Make @glimmer/tracking an ember-cli addon for Ember apps. #306
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Today, when `@glimmer/tracking` is a dependency in an application (or addon) that also has a dependency on either `ember-auto-import` or is using Embroider the code that exists here for `@glimmer/tracking` is actually shipped in the main vendor.js bundle. This is _bad_ because that code is actually completely unused (since the babel transpilation will transform imports from `@glimmer/tracking` into `Ember` globals method calls). The other issue is that Ember currently provides more capabilities from the `@glimmer/tracking` package than what is available to Glimmer.js users (for now): `@glimmer/tracking/primitives/cache`. Ember 3.22 adds built in support for these caching primitives and enables that import path to work properly. Prior to these changes, attempting to import from `@glimmer/tracking/primtives/cache` would result in a build time resolution error: ``` Can't resolve '@glimmer/tracking/primitives/cache' in '/some/folder/name' ``` This works around the error by declaring that this package is an Ember addon, and it just happens to provide _no files_.
pzuraq
approved these changes
Sep 18, 2020
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Today, when
@glimmer/trackingis a dependency in an application (or addon) that also has a dependency on eitherember-auto-importor is using Embroider the code that exists here for@glimmer/trackingis actually shipped in the main vendor.js bundle. This is bad because that code is actually completely unused (since the babel transpilation will transform imports from@glimmer/trackingintoEmberglobals method calls).The other issue is that Ember currently provides more capabilities from the
@glimmer/trackingpackage than what is available to Glimmer.js users (for now):@glimmer/tracking/primitives/cache. Ember 3.22 adds built in support for these caching primitives and enables that import path to work properly.Prior to these changes, attempting to import from
@glimmer/tracking/primtives/cachewould result in a build time resolution error:This works around the error by declaring that this package is an Ember addon, and it just happens to provide no files.
Fixes ember-polyfills/ember-cache-primitive-polyfill#3