fixes based on Aniket-Engg comments

app/ui/modal-dialog-custom.d.ts

-export function alert(title: any, text: any): {
-    container: HTMLElement;
-    okListener: () => void;
-    cancelListener: () => void;
-    hide: () => void;
-};
-export function prompt(title: any, text: any, inputValue: any, ok: any, cancel: any, focus: any): void;
-export function promptPassphrase(title: any, text: any, inputValue: any, ok: any, cancel: any): void;
-export function promptPassphraseCreation(ok: any, cancel: any): {
-    container: HTMLElement;
-    okListener: () => void;
-    cancelListener: () => void;
-    hide: () => void;
-};
-export function promptMulti({ title, text, inputValue }: {
-    title: any;
-    text: any;
-    inputValue: any;
-}, ok: any, cancel: any): {
-    container: HTMLElement;
-    okListener: () => void;
-    cancelListener: () => void;
-    hide: () => void;
-};
-export function confirm(title: any, text: any, ok: any, cancel: any): {
-    container: HTMLElement;
-    okListener: () => void;
-    cancelListener: () => void;
-    hide: () => void;
-};

app/ui/modaldialog.d.ts

-declare function _exports(title: any, content: any, ok: any, cancel: any, focusSelector: any, opts: any): {
-    container: HTMLElement;
-    okListener: () => void;
-    cancelListener: () => void;
-    hide: () => void;
-};
-export = _exports;

apps/remix-ide/src/app/components/plugin-manager-component.js

@@ -48,7 +48,7 @@ class PluginManagerComponent extends ViewPlugin {
    * @param {string} name name of Plugin
    */
   isActive (name) {
-    this.appManager.actives.includes(name)
+    return this.appManager.actives.includes(name)
   }
 
   /**