Remove ember-fetch/mixins/adapter-fetch ember-fetch/ajax, drop node 8

.travis.yml

@@ -3,7 +3,7 @@ language: node_js
 node_js:
   # we recommend testing addons with the same minimum supported node version as Ember CLI
   # so that your addon works for all apps
-  - "8"
+  - "10"
 
 addons:
   chrome: stable

README.md

@@ -54,38 +54,9 @@ To use `ember-fetch` with TypeScript or enable editor's type support, You can ad
 
 ### Use with Ember Data
 
-> [email protected] was released with built-in fetch support, this mixin is no longer needed and will be removed in next major bump.
-
-To have Ember Data utilize `fetch` instead of jQuery.ajax to make calls to your backend, extend your project's `application` adapter with the `adapter-fetch` mixin.
-
-```js
-// app/adapters/application.js
-import DS from 'ember-data';
-import AdapterFetch from 'ember-fetch/mixins/adapter-fetch';
-
-export default DS.RESTAdapter.extend(AdapterFetch, {
-  ...
-});
-```
+[email protected] was released with built-in fetch support, if your ember-data is below 3.9.2, please checkout [ember-fetch v7.x](https://github.com/ember-cli/ember-fetch/tree/v7.x).
 
 ### Use with Fastboot
-#### ajax-service
-Currently, Fastboot supplies its own server-side ajax functionality, and including `ember-fetch` and the `adapter-fetch` mixin in a Fastboot app will not work without some modifications. To allow the `node-fetch` polyfill that is included with this addon to make your API calls, you must add an initializer to the consuming app's `fastboot` directory that overrides the one Fastboot utilizes to inject its own ajax.
-
-Example:
-```js
-// fastboot/initializers/ajax.js
-
-export default {
-  name: 'ajax-service',
-  initialize() {
-    // noop
-    // This is to override Fastboot's initializer which prevents ember-fetch from working
-    // https://github.com/ember-fastboot/ember-cli-fastboot/blob/master/fastboot/initializers/ajax.js
-  }
-}
-```
-
 #### relative url
 `ember-fetch` uses `node-fetch` in Fastboot, which [doesn't allow relative URL](https://github.com/bitinn/node-fetch/tree/v2.3.0#fetchurl-options).
 
@@ -199,33 +170,3 @@ export default Route.extend({
 * we actually don't bundle github/fetch rather we merely wrap/transform what
   comes from `node_modules`, so we should be resilient to changes assuming
   semver from the fetch module
-
-## Deprecations
-
-### deprecate-fetch-ember-data-support
-
-Starting with [`ember-data`](https://www.npmjs.com/package/ember-data) v3.9.2, the library comes with built-in fetch support.
-To address this deprecation, find imports and uses of the `ember-fetch/mixins/adapter-fetch` module:
-
-Before:
-
-```js
-// app/adapters/application.js
-import DS from 'ember-data';
-import AdapterFetch from 'ember-fetch/mixins/adapter-fetch';
-
-export default DS.RESTAdapter.extend(AdapterFetch, {
-  // …
-});
-```
-
-After:
-
-```js
-// app/adapters/application.js
-import DS from 'ember-data';
-
-export default DS.RESTAdapter.extend({
-  // …
-});
-```

appveyor.yml

@@ -8,7 +8,6 @@ init:
 environment:
   MOCHA_REPORTER: "mocha-appveyor-reporter"
   matrix:
-    - nodejs_version: "8"
     - nodejs_version: "10"
 
 # Install scripts. (runs after repo cloning)

assets/browser-fetch.js.t

@@ -66,8 +66,4 @@
       delete self[prop];
     });
   });
-
-  define('fetch/ajax', ['exports'], function() {
-    throw new Error('You included `fetch/ajax` but it was renamed to `ember-fetch/ajax`');
-  });
 }(typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : this));

package.json

@@ -92,7 +92,7 @@
     "**/engine.io": "~3.3.0"
   },
   "engines": {
-    "node": "8.* || >= 10"
+    "node": ">= 10"
   },
   "publishConfig": {
     "registry": "https://registry.npmjs.org/"

public/fetch-fastboot.js

@@ -81,9 +81,3 @@ define('fetch', ['exports'], function(exports) {
   exports.Response = nodeFetch.Response;
   exports.AbortController = AbortControllerPolyfill.AbortController;
 });
-
-define('fetch/ajax', ['exports'], function() {
-  throw new Error(
-    'You included `fetch/ajax` but it was renamed to `ember-fetch/ajax`'
-  );
-});