12 files changed, 53 insertions, 15 deletions
diff --git a/resources/assets/javascripts/bootstrap/application.js b/resources/assets/javascripts/bootstrap/application.js
index f97dd90..1f0561e 100644
--- a/resources/assets/javascripts/bootstrap/application.js
+++ b/resources/assets/javascripts/bootstrap/application.js
@@ -1,5 +1,5 @@
 import { $gettext } from '../lib/gettext.js';
-import eventBus from "../lib/event-bus";
+import eventBus from "../lib/event-bus.ts";
 
 /* ------------------------------------------------------------------------
  * application.js
diff --git a/resources/assets/javascripts/bootstrap/multi_select.js b/resources/assets/javascripts/bootstrap/multi_select.js
index 38fa362..9e817b8 100644
--- a/resources/assets/javascripts/bootstrap/multi_select.js
+++ b/resources/assets/javascripts/bootstrap/multi_select.js
@@ -1,5 +1,5 @@
 import { $gettext } from '../lib/gettext.js';
-import eventBus from "../lib/event-bus";
+import eventBus from "../lib/event-bus.ts";
 
 eventBus.on('studip:set-locale', () => {
     $.extend($.ui.multiselect, {
diff --git a/resources/assets/javascripts/chunks/vue.js b/resources/assets/javascripts/chunks/vue.js
index 53748c9..cf95ed3 100644
--- a/resources/assets/javascripts/chunks/vue.js
+++ b/resources/assets/javascripts/chunks/vue.js
@@ -1,7 +1,7 @@
 import Vue from 'vue';
 import Vuex from 'vuex';
 import Router from "vue-router";
-import eventBus from '../lib/event-bus.js';
+import eventBus from '../lib/event-bus.ts';
 import GetTextPlugin from 'vue-gettext';
 import { getLocale, getVueConfig } from '../lib/gettext.js';
 import PortalVue from 'portal-vue';
diff --git a/resources/assets/javascripts/init.js b/resources/assets/javascripts/init.js
index e01f84e..a37a466 100644
--- a/resources/assets/javascripts/init.js
+++ b/resources/assets/javascripts/init.js
@@ -16,13 +16,13 @@ import CalendarDialog from './lib/calendar_dialog.js';
 import Clipboard from './lib/clipboard.js';
 import Cookie from './lib/cookie.js';
 import CourseWizard from './lib/course_wizard.js';
-import createURLHelper from './lib/url_helper.js';
+import { createURLHelper } from './lib/url_helper.ts';
 import CSS from './lib/css.js';
 import Dates from './lib/dates.js';
 import Dialog from './lib/dialog.js';
 import DragAndDropUpload from './lib/drag_and_drop_upload.js';
 import enrollment from './lib/enrollment.js';
-import eventBus from './lib/event-bus.js';
+import eventBus from './lib/event-bus.ts';
 import extractCallback from './lib/extract_callback.js';
 import Files from './lib/files.js';
 import FilesDashboard from './lib/files_dashboard.js';
diff --git a/resources/assets/javascripts/lib/calendar.js b/resources/assets/javascripts/lib/calendar.js
index bfe0054..2f1cd67 100644
--- a/resources/assets/javascripts/lib/calendar.js
+++ b/resources/assets/javascripts/lib/calendar.js
@@ -1,5 +1,5 @@
 import { $gettext } from '../lib/gettext.js';
-import eventBus from "./event-bus";
+import eventBus from "./event-bus.ts";
 
 eventBus.on('studip:set-locale', () => {
     Calendar.day_names = [
diff --git a/resources/assets/javascripts/lib/event-bus.d.ts b/resources/assets/javascripts/lib/event-bus.d.ts
new file mode 100644
index 0000000..812c738
--- /dev/null
+++ b/resources/assets/javascripts/lib/event-bus.d.ts
@@ -0,0 +1,2 @@
+declare const eventBus: import("mitt").Emitter;
+export default eventBus;
diff --git a/resources/assets/javascripts/lib/event-bus.js b/resources/assets/javascripts/lib/event-bus.ts
index 3f6a58d..3f6a58d 100644
--- a/resources/assets/javascripts/lib/event-bus.js
+++ b/resources/assets/javascripts/lib/event-bus.ts
diff --git a/resources/assets/javascripts/lib/forum.js b/resources/assets/javascripts/lib/forum.js
index fbada1f..8dcc076 100644
--- a/resources/assets/javascripts/lib/forum.js
+++ b/resources/assets/javascripts/lib/forum.js
@@ -1,5 +1,5 @@
 import { $gettext } from "./gettext.js";
-import eventBus from "./event-bus";
+import eventBus from "./event-bus.ts";
 
 eventBus.on('studip:set-locale', () => {
     Forum.warning_text = $gettext('Wenn Sie die Seite verlassen, gehen ihre Änderungen verloren!');
diff --git a/resources/assets/javascripts/lib/gettext.js b/resources/assets/javascripts/lib/gettext.js
index 0e3eb9a..5742466 100644
--- a/resources/assets/javascripts/lib/gettext.js
+++ b/resources/assets/javascripts/lib/gettext.js
@@ -1,6 +1,6 @@
 import { translate } from 'vue-gettext';
 import defaultTranslations from '../../../../locale/de/LC_MESSAGES/js-resources.json';
-import eventBus from './event-bus.js';
+import eventBus from './event-bus.ts';
 
 const DEFAULT_LANG = 'de_DE';
 const DEFAULT_LANG_NAME = 'Deutsch';
diff --git a/resources/assets/javascripts/lib/url_helper.d.ts b/resources/assets/javascripts/lib/url_helper.d.ts
new file mode 100644
index 0000000..ec8920e
--- /dev/null
+++ b/resources/assets/javascripts/lib/url_helper.d.ts
@@ -0,0 +1,33 @@
+/**
+ * This class helps to handle URLs of hyperlinks and change their parameters.
+ * For example a javascript-page may open an item and the user expects other links
+ * on the same page to "know" that this item is now open. But because we don't use
+ * PHP session-variables here, this is difficult to use. This class can help. You
+ * can overwrite the href-attribute of the link by:
+ *
+ *  [code]
+ *  link.href = STUDIP.URLHelper.getURL("adresse.php?hello=world#anchor");
+ *  [/code]
+ * Returns something like:
+ * "http://uni-adresse.de/studip/adresse.php?hello=world&mandatory=parameter#anchor"
+ */
+declare class URLHelper {
+    base_url: string;
+    parameters: Record<string, string>;
+    constructor(base_url?: string, parameters?: {});
+    /**
+     * returns a readily encoded URL with the mandatory parameters and additionally passed
+     * parameters.
+     *
+     * @param url string: any url-string
+     * @param param_object map: associative object for extra values
+     * @param ignore_params boolean: ignore previously bound parameters
+     * @return: url with all necessary and additional parameters, encoded
+     */
+    getURL(url: string, param_object: any, ignore_params: boolean): string;
+}
+export declare function createURLHelper(config: {
+    base_url?: string;
+    parameters?: Record<string, string>;
+}): URLHelper;
+export {};
diff --git a/resources/assets/javascripts/lib/url_helper.js b/resources/assets/javascripts/lib/url_helper.ts
index 0aa08c3..b9ebbf6 100644
--- a/resources/assets/javascripts/lib/url_helper.js
+++ b/resources/assets/javascripts/lib/url_helper.ts
@@ -13,7 +13,10 @@
  */
 
 class URLHelper {
-    constructor(base_url = null, parameters = {}) {
+    base_url: string;
+    parameters: Record<string, string>;
+
+    constructor(base_url = "", parameters = {}) {
         //the base url for all links
         this.base_url = base_url;
 
@@ -30,7 +33,7 @@ class URLHelper {
      * @param ignore_params boolean: ignore previously bound parameters
      * @return: url with all necessary and additional parameters, encoded
      */
-    getURL(url, param_object, ignore_params) {
+    getURL(url: string, param_object: any, ignore_params: boolean): string {
         let result;
 
         if (url === '' || url.match(/^[?#]/)) {
@@ -40,14 +43,14 @@ class URLHelper {
         }
 
         if (!ignore_params) {
-            for (let key in this.parameters) {
+            for (const key in this.parameters) {
                 if (!result.searchParams.has(key)) {
                     result.searchParams.set(key, this.parameters[key]);
                 }
             }
         }
 
-        for (let key in param_object) {
+        for (const key in param_object) {
             if (param_object[key] !== null) {
                 result.searchParams.set(key, param_object[key]);
             } else {
@@ -59,6 +62,6 @@ class URLHelper {
     }
 }
 
-export default function createURLHelper(config) {
-    return new URLHelper(config && config.base_url, config && config.parameters);
+export function createURLHelper(config: { base_url?: string, parameters?: Record<string, string>}): URLHelper {
+    return new URLHelper(config?.base_url, config?.parameters);
 }
diff --git a/resources/assets/javascripts/studip-ui.js b/resources/assets/javascripts/studip-ui.js
index fdb3255..41897b2 100644
--- a/resources/assets/javascripts/studip-ui.js
+++ b/resources/assets/javascripts/studip-ui.js
@@ -1,5 +1,5 @@
 import { $gettext } from './lib/gettext.js';
-import eventBus from "./lib/event-bus";
+import eventBus from "./lib/event-bus.ts";
 
 /**
  * This file contains extensions/adjustments for jQuery UI.