[chore]: require ember-auto-import 2.0.0

ref emberjs#19752

lib/index.js

@@ -11,6 +11,7 @@ const injectBabelHelpers = require('./transforms/inject-babel-helpers').injectBa
 const debugTree = require('broccoli-debug').buildDebugCallback('ember-source:addon');
 const vmBabelPlugins = require('@glimmer/vm-babel-plugins');
 const Overrides = require('./overrides');
+const semver = require('semver');
 
 const PRE_BUILT_TARGETS = [
   'last 1 Chrome versions',
@@ -46,10 +47,12 @@ module.exports = {
     this._super.init && this._super.init.apply(this, arguments);
 
     if ('ember' in this.project.bowerDependencies()) {
-      // TODO: move this to a throw soon.
-      this.ui.writeWarnLine(
-        'Ember.js is now provided by node_module `ember-source`, please remove it from bower'
-      );
+      throw new Error('Ember.js is now provided by node_module `ember-source`, please remove it from bower');
+    }
+
+    let emberAutoImport = this.project.addons.find((a) => a.name === 'ember-auto-import');
+    if (this.project.addons.length && (!emberAutoImport || semver.lt(emberAutoImport.pkg.version, '2.0.0'))) {
+      throw new Error('ember-auto-import must be present and installed as version 2.0.0 or greater. See the v2.0 upgrade guide here - https://github.com/ef4/ember-auto-import/blob/main/docs/upgrade-guide-2.0.md');
     }
 
     // resets `this.root` to the correct location by default ember-cli