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+---
+stage: accepted
+start-date: 2024-05-11T00:00:00.000Z
+release-date: # In format YYYY-MM-DDT00:00:00.000Z
+release-versions:
+teams: # delete teams that aren't relevant
+  - data
+prs:
+  accepted: https://github.com/emberjs/rfcs/pull/1026
+project-link:
+suite: 
+---
+
+# EmberData | Deprecate Store extending EmberObject
+
+## Summary
+
+This RFC deprecates the Store extending from EmberObject. All EmberObject specific
+APIs included.
+
+## Motivation
+
+There are two motivations:
+
+First, extending EmberObject is vestigial. The Store makes no use of any EmberObject API,
+not even for use with Ember's container or service injection.
+
+Second, in order to support any Ember version, support any non-Ember framework, and support
+EmberData running in non-browser environments we want to remove unnecessary coupling to the Ember framework.
+
+## Detailed design
+
+Instead of deprecating every EmberObject method, we will feature flag the Store extending
+EmberObject at the module level. This ensures the deprecation only prints once, and that
+once resolved the Store will no longer extend thereby making it feasible to utilize the
+benefits of not extending EmberObject immediately.
+
+To resolve the deprecation, users will need to confirm they are not using EmberObject APIs
+on the Store. Generally speaking, this has been limited to `.extend` e.g.
+
+```ts
+const AppStore = Store.extend({});
+```
+
+This pattern is now rare in the wild, but where it exists can be safely refactored to
+
+```ts
+class AppStore extends Store {}
+```
+
+Once confirmed (or in order to confirm) that the Store in an app no longer requires
+extending EmberObject, the deprecation config boolean may be used to both remove the
+deprecation AND the deprecated code.
+
+```ts
+const app = new EmberApp(defaults, {
+  emberData: {
+    deprecations: {
+      DEPRECATE_STORE_EXTENDS_EMBER_OBJECT: false
+    }
+  }
+});
+```
+
+An upcoming shift in how EmberData manages configuration would mean that applications
+using the new configuration (not yet released) would do the following:
+
+```ts
+'use strict';
+
+const EmberApp = require('ember-cli/lib/broccoli/ember-app');
+
+module.exports = async function (defaults) {
+  const { setConfig } = await import('@warp-drive/build-config');
+
+  const app = new EmberApp(defaults, {});
+
+  setConfig(app, __dirname, {
+    deprecations: {
+      DEPRECATE_STORE_EXTENDS_EMBER_OBJECT: false
+    }
+  });
+
+  return app.toTree();
+};
+```
+
+## How we teach this
+
+Guides would be added for this deprecation to both the deprecation app and the API docs.
+
+Generally, folks do not tend to treat the Store as an EmberObject or utilize legacy EmberObject
+APIs with it, so both the teaching and the migration overhead are low.
+
+## Drawbacks
+
+none
+
+## Alternatives
+
+- deprecate every classic method to help folks find usage
+    - not chosen as it's rare *and* setting the deprecation flag to `false` will cause any such locations to be findable via error
+- create a new package `@warp-drive/core` or `@warp-drive/store` and have users migrate by swapping import
+  locations.
+    - not chosen as this is too minimal a change
+
+## Unresolved questions
+
+None
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