DEV: Remove `isLegacyEmber` (#17181)

app/assets/javascripts/discourse-common/addon/lib/debounce.js

@@ -1,5 +1,5 @@
-import { debounce, next, run } from "@ember/runloop";
-import { isLegacyEmber, isTesting } from "discourse-common/config/environment";
+import { debounce, next } from "@ember/runloop";
+import { isTesting } from "discourse-common/config/environment";
 
 /**
   Debounce a Javascript function. This means if it's called many times in a time limit it
@@ -7,13 +7,11 @@ import { isLegacyEmber, isTesting } from "discourse-common/config/environment";
   Original function will be called with the context and arguments from the last call made.
 **/
 
-let testingFunc = isLegacyEmber() ? run : next;
-
 export default function () {
   if (isTesting()) {
     // Don't include the time argument (in ms)
     let args = [].slice.call(arguments, 0, -1);
-    return testingFunc.apply(void 0, args);
+    return next.apply(void 0, args);
   } else {
     return debounce(...arguments);
   }

app/assets/javascripts/discourse/app/initializers/inject-objects.js

@@ -1,54 +1,50 @@
 import { setDefaultOwner } from "discourse-common/lib/get-owner";
-import { isLegacyEmber } from "discourse-common/config/environment";
 import User from "discourse/models/user";
 import Site from "discourse/models/site";
 import deprecated from "discourse-common/lib/deprecated";
 
 export default {
   name: "inject-objects",
-  after: isLegacyEmber() ? null : "export-application-global",
+  after: "export-application-global",
   initialize(container, app) {
     // This is required for Ember CLI tests to work
     setDefaultOwner(app.__container__);
 
-    // Backwards compatibility for Discourse.SiteSettings and Discourse.User
-    if (!isLegacyEmber()) {
-      Object.defineProperty(app, "SiteSettings", {
-        get() {
-          deprecated(
-            `use injected siteSettings instead of Discourse.SiteSettings`,
-            {
-              since: "2.8",
-              dropFrom: "2.9",
-            }
-          );
-          return container.lookup("site-settings:main");
-        },
-      });
-      Object.defineProperty(app, "User", {
-        get() {
-          deprecated(
-            `import discourse/models/user instead of using Discourse.User`,
-            {
-              since: "2.8",
-              dropFrom: "2.9",
-            }
-          );
-          return User;
-        },
-      });
-      Object.defineProperty(app, "Site", {
-        get() {
-          deprecated(
-            `import discourse/models/site instead of using Discourse.Site`,
-            {
-              since: "2.8",
-              dropFrom: "2.9",
-            }
-          );
-          return Site;
-        },
-      });
-    }
+    Object.defineProperty(app, "SiteSettings", {
+      get() {
+        deprecated(
+          `use injected siteSettings instead of Discourse.SiteSettings`,
+          {
+            since: "2.8",
+            dropFrom: "2.9",
+          }
+        );
+        return container.lookup("site-settings:main");
+      },
+    });
+    Object.defineProperty(app, "User", {
+      get() {
+        deprecated(
+          `import discourse/models/user instead of using Discourse.User`,
+          {
+            since: "2.8",
+            dropFrom: "2.9",
+          }
+        );
+        return User;
+      },
+    });
+    Object.defineProperty(app, "Site", {
+      get() {
+        deprecated(
+          `import discourse/models/site instead of using Discourse.Site`,
+          {
+            since: "2.8",
+            dropFrom: "2.9",
+          }
+        );
+        return Site;
+      },
+    });
   },
 };

app/assets/javascripts/discourse/app/lib/d-popover.js

@@ -1,5 +1,3 @@
-import { isLegacyEmber } from "discourse-common/config/environment";
-import { begin, end } from "@ember/runloop";
 import tippy from "tippy.js";
 import { iconHTML } from "discourse-common/lib/icon-library";
 
@@ -39,14 +37,6 @@ export function showPopover(event, options = {}) {
     ? event.target._tippy
     : setup(event.target, options);
 
-  // hangs on legacy ember
-  if (!isLegacyEmber) {
-    begin();
-    instance.popper.addEventListener("transitionend", end, {
-      once: true,
-    });
-  }
-
   if (instance.state.isShown) {
     instance.hide();
   } else {
@@ -72,8 +62,7 @@ export default function setup(target, options) {
     options
   );
 
-  // legacy support
-  delete tippyOptions.textContent;
+  // legacy support delete tippyOptions.textContent;
   delete tippyOptions.htmlContent;
 
   return tippy(target, tippyOptions);

app/assets/javascripts/discourse/app/pre-initializers/map-routes.js

@@ -1,9 +1,5 @@
-import Application from "@ember/application";
-import { isLegacyEmber } from "discourse-common/config/environment";
 import { registerRouter, teardownRouter } from "discourse/mapping-router";
 
-let originalBuildInstance;
-
 export default {
   name: "map-routes",
   after: "inject-discourse-objects",
@@ -12,17 +8,6 @@ export default {
     let routerClass = registerRouter(app);
     container.registry.register("router:main", routerClass);
     this.routerClass = routerClass;
-
-    if (isLegacyEmber()) {
-      // HACK to fix: https://github.com/emberjs/ember.js/issues/10310
-      originalBuildInstance =
-        originalBuildInstance || Application.prototype.buildInstance;
-
-      Application.prototype.buildInstance = function () {
-        this.buildRegistry();
-        return originalBuildInstance.apply(this);
-      };
-    }
   },
 
   teardown() {

app/assets/javascripts/discourse/app/services/presence.js

@@ -12,7 +12,6 @@ import {
 } from "@ember/runloop";
 import Session from "discourse/models/session";
 import { Promise } from "rsvp";
-import { isLegacyEmber, isTesting } from "discourse-common/config/environment";
 import User from "discourse/models/user";
 import userPresent, {
   onPresenceChange,
@@ -20,6 +19,7 @@ import userPresent, {
 } from "discourse/lib/user-presence";
 import { bind } from "discourse-common/utils/decorators";
 import Evented from "@ember/object/evented";
+import { isTesting } from "discourse-common/config/environment";
 
 const PRESENCE_INTERVAL_S = 30;
 const PRESENCE_DEBOUNCE_MS = isTesting() ? 0 : 500;
@@ -549,13 +549,6 @@ export default class PresenceService extends Service {
         }
       });
     } catch (e) {
-      if (e.jqXHR?.status === 403 && isTesting() && isLegacyEmber()) {
-        // Legacy testing environment will remove the User.current() value before disposing of controllers/components.
-        // Presence often involves making HTTP calls during disposal of components, so this can cause issues.
-        // Modern Ember-CLI environment does not require this hack
-        return;
-      }
-
       // Put the failed events back in the queue for next time
       this._queuedEvents.unshift(...queue);
       if (e.jqXHR?.status === 429) {

app/assets/javascripts/discourse/tests/setup-tests.js

@@ -34,9 +34,9 @@ import { flushMap } from "discourse/services/store";
 import { registerObjects } from "discourse/pre-initializers/inject-discourse-objects";
 import sinon from "sinon";
 import { run } from "@ember/runloop";
-import { isLegacyEmber } from "discourse-common/config/environment";
 import { disableCloaking } from "discourse/widgets/post-stream";
 import { clearState as clearPresenceState } from "discourse/tests/helpers/presence-pretender";
+import { addModuleExcludeMatcher } from "ember-cli-test-loader/test-support/index";
 
 const Plugin = $.fn.modal;
 const Modal = Plugin.Constructor;
@@ -298,19 +298,11 @@ function setupTestsCommon(application, container, config) {
 
     createHelperContext({
       get siteSettings() {
-        if (isLegacyEmber() && container.isDestroyed) {
-          return settings;
-        } else {
-          return container.lookup("site-settings:main");
-        }
+        return container.lookup("site-settings:main");
       },
       capabilities: {},
       get site() {
-        if (isLegacyEmber() && container.isDestroyed) {
-          return Site.current();
-        } else {
-          return container.lookup("site:main") || Site.current();
-        }
+        return container.lookup("site:main") || Site.current();
       },
       registry: app.__registry__,
     });
@@ -389,19 +381,7 @@ function setupTestsCommon(application, container, config) {
     return true;
   };
 
-  if (isLegacyEmber()) {
-    Object.keys(requirejs.entries).forEach(function (entry) {
-      if (shouldLoadModule(entry)) {
-        require(entry, null, null, true);
-      }
-    });
-  } else {
-    // Ember CLI
-    const emberCliTestLoader = require("ember-cli-test-loader/test-support/index");
-    emberCliTestLoader.addModuleExcludeMatcher(
-      (name) => !shouldLoadModule(name)
-    );
-  }
+  addModuleExcludeMatcher((name) => !shouldLoadModule(name));
 
   // forces 0 as duration for all jquery animations
   // eslint-disable-next-line no-undef