diff --git a/types/aws-lambda/trigger/sns.d.ts b/types/aws-lambda/trigger/sns.d.ts
index c6d2cae29ee934..5c3ce544f2f44b 100644
--- a/types/aws-lambda/trigger/sns.d.ts
+++ b/types/aws-lambda/trigger/sns.d.ts
@@ -16,12 +16,12 @@ export interface SNSMessage {
     SignatureVersion: string;
     Timestamp: string;
     Signature: string;
-    SigningCertUrl: string;
+    SigningCertUrl: string; // Not SigningCertURL; see https://github.com/DefinitelyTyped/DefinitelyTyped/pull/73817#issuecomment-3367340170
     MessageId: string;
     Message: string;
     MessageAttributes: SNSMessageAttributes;
     Type: string;
-    UnsubscribeUrl: string;
+    UnsubscribeUrl: string; // Not UnsubscribeURL; see https://github.com/DefinitelyTyped/DefinitelyTyped/pull/73817#issuecomment-3367340170
     TopicArn: string;
     Subject?: string;
     Token?: string;
diff --git a/types/chrome/index.d.ts b/types/chrome/index.d.ts
index e8ec196ac916c0..e36e59bfcd0140 100644
--- a/types/chrome/index.d.ts
+++ b/types/chrome/index.d.ts
@@ -10156,69 +10156,74 @@ declare namespace chrome {
      * Permissions: "system.storage"
      */
     export namespace system.storage {
+        export enum EjectDeviceResultCode {
+            /** The ejection command is successful -- the application can prompt the user to remove the device. */
+            SUCCESS = "success",
+            /** The device is in use by another application. The ejection did not succeed; the user should not remove the device until the other application is done with the device. */
+            IN_USE = "in_use",
+            /** There is no such device known. */
+            NO_SUCH_DEVICE = "no_such_device",
+            /** The ejection command failed. */
+            FAILURE = "failure",
+        }
+
         export interface StorageUnitInfo {
             /** The transient ID that uniquely identifies the storage device. This ID will be persistent within the same run of a single application. It will not be a persistent identifier between different runs of an application, or between different applications. */
             id: string;
             /** The name of the storage unit. */
             name: string;
-            /**
-             * The media type of the storage unit.
-             * fixed: The storage has fixed media, e.g. hard disk or SSD.
-             * removable: The storage is removable, e.g. USB flash drive.
-             * unknown: The storage type is unknown.
-             */
-            type: string;
+            /** The media type of the storage unit. */
+            type: `${StorageUnitType}`;
             /** The total amount of the storage space, in bytes. */
             capacity: number;
         }
 
-        export interface StorageCapacityInfo {
-            /** A copied |id| of getAvailableCapacity function parameter |id|. */
+        export enum StorageUnitType {
+            /** The storage has fixed media, e.g. hard disk or SSD. */
+            FIXED = "fixed",
+            /** The storage is removable, e.g. USB flash drive. */
+            REMOVABLE = "removable",
+            /** The storage type is unknown. */
+            UNKNOWN = "unknown",
+        }
+
+        export interface StorageAvailableCapacityInfo {
+            /** A copied `id` of getAvailableCapacity function parameter `id`. */
             id: string;
             /** The available capacity of the storage device, in bytes. */
             availableCapacity: number;
         }
 
-        export interface SystemStorageAttachedEvent extends chrome.events.Event<(info: StorageUnitInfo) => void> {}
-
-        export interface SystemStorageDetachedEvent extends chrome.events.Event<(id: string) => void> {}
-
-        /** Get the storage information from the system. The argument passed to the callback is an array of StorageUnitInfo objects. */
-        export function getInfo(callback: (info: StorageUnitInfo[]) => void): void;
         /**
          * Get the storage information from the system. The argument passed to the callback is an array of StorageUnitInfo objects.
-         * @return The `getInfo` method provides its result via callback or returned as a `Promise` (MV3 only).
+         *
+         * Can return its result via Promise in Manifest V3 or later since Chrome 91.
          */
         export function getInfo(): Promise<StorageUnitInfo[]>;
+        export function getInfo(callback: (info: StorageUnitInfo[]) => void): void;
+
         /**
          * Ejects a removable storage device.
-         * @param callback
-         * Parameter result: success: The ejection command is successful -- the application can prompt the user to remove the device; in_use: The device is in use by another application. The ejection did not succeed; the user should not remove the device until the other application is done with the device; no_such_device: There is no such device known. failure: The ejection command failed.
-         */
-        export function ejectDevice(id: string, callback: (result: string) => void): void;
-        /**
-         * Ejects a removable storage device.
-         * @param callback
-         * Parameter result: success: The ejection command is successful -- the application can prompt the user to remove the device; in_use: The device is in use by another application. The ejection did not succeed; the user should not remove the device until the other application is done with the device; no_such_device: There is no such device known. failure: The ejection command failed.
-         * @return The `ejectDevice` method provides its result via callback or returned as a `Promise` (MV3 only).
-         */
-        export function ejectDevice(id: string): Promise<string>;
-        /**
-         * Get the available capacity of a specified |id| storage device. The |id| is the transient device ID from StorageUnitInfo.
-         * @since Dev channel only.
+         *
+         * Can return its result via Promise in Manifest V3 or later since Chrome 91.
          */
-        export function getAvailableCapacity(id: string, callback: (info: StorageCapacityInfo) => void): void;
+        export function ejectDevice(id: string): Promise<`${EjectDeviceResultCode}`>;
+        export function ejectDevice(id: string, callback: (result: `${EjectDeviceResultCode}`) => void): void;
+
         /**
-         * Get the available capacity of a specified |id| storage device. The |id| is the transient device ID from StorageUnitInfo.
+         * Get the available capacity of a specified `id` storage device. The `id` is the transient device ID from StorageUnitInfo.
+         *
+         * Can return its result via Promise in Manifest V3.
          * @since Dev channel only.
-         * @return The `getAvailableCapacity` method provides its result via callback or returned as a `Promise` (MV3 only).
          */
-        export function getAvailableCapacity(id: string): Promise<StorageCapacityInfo>;
+        export function getAvailableCapacity(id: string): Promise<StorageAvailableCapacityInfo>;
+        export function getAvailableCapacity(id: string, callback: (info: StorageAvailableCapacityInfo) => void): void;
 
         /** Fired when a new removable storage is attached to the system. */
-        export var onAttached: SystemStorageAttachedEvent;
+        export const onAttached: events.Event<(info: StorageUnitInfo) => void>;
+
         /** Fired when a removable storage is detached from the system. */
-        export var onDetached: SystemStorageDetachedEvent;
+        export const onDetached: events.Event<(id: string) => void>;
     }
 
     ////////////////////
diff --git a/types/chrome/test/index.ts b/types/chrome/test/index.ts
index 363306740f25f6..dee5b277f3b120 100644
--- a/types/chrome/test/index.ts
+++ b/types/chrome/test/index.ts
@@ -2863,11 +2863,50 @@ async function testSystemCpu() {
     chrome.system.cpu.getInfo(() => {}).then(() => {});
 }
 
-// https://developer.chrome.com/docs/extensions/reference/system_storage
-async function testSystemStorageForPromise() {
-    await chrome.system.storage.getInfo();
-    await chrome.system.storage.ejectDevice("id1");
-    await chrome.system.storage.getAvailableCapacity("id1");
+// https://developer.chrome.com/docs/extensions/reference/api/system/storage
+async function testSystemStorage() {
+    chrome.system.storage.EjectDeviceResultCode.FAILURE === "failure";
+    chrome.system.storage.EjectDeviceResultCode.IN_USE === "in_use";
+    chrome.system.storage.EjectDeviceResultCode.NO_SUCH_DEVICE === "no_such_device";
+    chrome.system.storage.EjectDeviceResultCode.SUCCESS === "success";
+
+    chrome.system.storage.StorageUnitType.FIXED === "fixed";
+    chrome.system.storage.StorageUnitType.REMOVABLE === "removable";
+    chrome.system.storage.StorageUnitType.UNKNOWN === "unknown";
+
+    const id = "id";
+    chrome.system.storage.ejectDevice(id); // $ExpectType Promise<"success" | "in_use" | "no_such_device" | "failure">
+    chrome.system.storage.ejectDevice(id, (result) => { // $ExpectType void
+        result; // $ExpectType "success" | "in_use" | "no_such_device" | "failure"
+    });
+    // @ts-expect-error
+    chrome.system.storage.ejectDevice(id, () => {}).then(() => {});
+
+    chrome.system.storage.getAvailableCapacity(id); // $ExpectType Promise<StorageAvailableCapacityInfo>
+    chrome.system.storage.getAvailableCapacity(id, (info) => { // $ExpectType void
+        info.availableCapacity; // $ExpectType number
+        info.id; // $ExpectType string
+    });
+    // @ts-expect-error
+    chrome.system.storage.getAvailableCapacity(id, () => {}).then(() => {});
+
+    chrome.system.storage.getInfo(); // $ExpectType Promise<StorageUnitInfo[]>
+    chrome.system.storage.getInfo((units) => { // $ExpectType void
+        units; // $ExpectType StorageUnitInfo[]
+    });
+    // @ts-expect-error
+    chrome.system.storage.getInfo(() => {}).then(() => {});
+
+    checkChromeEvent(chrome.system.storage.onAttached, (info) => {
+        info.capacity; // $ExpectType number
+        info.id; // $ExpectType string
+        info.name; // $ExpectType string
+        info.type; // $ExpectType "fixed" | "removable" | "unknown"
+    });
+
+    checkChromeEvent(chrome.system.storage.onDetached, (id) => {
+        id; // $ExpectType string
+    });
 }
 
 // https://developer.chrome.com/docs/extensions/reference/api/system/display
diff --git a/types/dhtmlxscheduler/.eslintrc.json b/types/dhtmlxscheduler/.eslintrc.json
deleted file mode 100644
index da61a149919e75..00000000000000
--- a/types/dhtmlxscheduler/.eslintrc.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-    "rules": {
-        "@typescript-eslint/adjacent-overload-signatures": "off",
-        "@typescript-eslint/no-unsafe-function-type": "off",
-        "@typescript-eslint/no-wrapper-object-types": "off"
-    }
-}
diff --git a/types/dhtmlxscheduler/dhtmlxscheduler-tests.ts b/types/dhtmlxscheduler/dhtmlxscheduler-tests.ts
deleted file mode 100644
index 1eb237265601a6..00000000000000
--- a/types/dhtmlxscheduler/dhtmlxscheduler-tests.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-// date operations
-var start: Date = scheduler.date.week_start(new Date());
-var next: Date = scheduler.date.add(new Date(), 1, "week");
-
-// hotkeys
-scheduler.keys.edit_cancel = 13;
-
-// config options
-scheduler.config.details_on_create = true;
-scheduler.config.xml_date = "%m-%d-%Y";
-scheduler.xy.bar_height = 40;
-
-// templates
-scheduler.templates.event_class = function(start: Date, end: Date, event: any) {
-    if (event.some) {
-        return "classA";
-    } else {
-        return "classB";
-    }
-};
-
-// locale
-scheduler.locale.labels.week_tab = "7 days";
-
-// API
-scheduler.init("scheduler_here", start);
-scheduler.load("/data/events");
-
-// events
-scheduler.attachEvent("onEmptyClick", function(ev?: Event) {
-    var date: Date = scheduler.getActionData(ev).date;
-});
-// filters
-scheduler.filter_week = (id: string, e: Event) => true;
-
-// enterprise version
-var scheduler2 = Scheduler.getSchedulerInstance();
-scheduler2.addEvent({ some: 1 });
-
-// map function for prev/next arrows
-scheduler.date.add_map = function(date, inc) {
-    return scheduler.date.add(date, inc, "month");
-};
diff --git a/types/dhtmlxscheduler/index.d.ts b/types/dhtmlxscheduler/index.d.ts
deleted file mode 100644
index 139bc8e39ac8c4..00000000000000
--- a/types/dhtmlxscheduler/index.d.ts
+++ /dev/null
@@ -1,1870 +0,0 @@
-interface SchedulerCallback {
-    (...args: any[]): any;
-}
-interface SchedulerFilterCallback {
-    (id: string | number, event: any): boolean;
-}
-
-type SchedulerEventName =
-    | "onAfterEventDisplay"
-    | "onAfterFolderToggle"
-    | "onAfterLightbox"
-    | "onAfterSchedulerResize"
-    | "onBeforeCollapse"
-    | "onBeforeDrag"
-    | "onBeforeEventChanged"
-    | "onBeforeEventCreated"
-    | "onBeforeEventDelete"
-    | "onBeforeEventDisplay"
-    | "onBeforeEventDragIn"
-    | "onBeforeEventDragOut"
-    | "onBeforeExpand"
-    | "onBeforeExternalDragIn"
-    | "onBeforeFolderToggle"
-    | "onBeforeLightbox"
-    | "onBeforeSectionRender"
-    | "onBeforeTodayDisplayed"
-    | "onBeforeTooltip"
-    | "onBeforeViewChange"
-    | "onCellClick"
-    | "onCellDblClick"
-    | "onClearAll"
-    | "onClick"
-    | "onCollapse"
-    | "onConfirmedBeforeEventDelete"
-    | "onContextMenu"
-    | "onDblClick"
-    | "onDragEnd"
-    | "onEmptyClick"
-    | "onEventAdded"
-    | "onEventCancel"
-    | "onEventChanged"
-    | "onEventCollision"
-    | "onEventCopied"
-    | "onEventCreated"
-    | "onEventCut"
-    | "onEventDeleted"
-    | "onEventDrag"
-    | "onEventDragIn"
-    | "onEventDragOut"
-    | "onEventDropOut"
-    | "onEventIdChange"
-    | "onEventLoading"
-    | "onEventPasted"
-    | "onEventSave"
-    | "onExpand"
-    | "onExternalDragIn"
-    | "onLightbox"
-    | "onLightboxButton"
-    | "onLimitViolation"
-    | "onLoadError"
-    | "onLocationError"
-    | "onMouseDown"
-    | "onMouseMove"
-    | "onOptionsLoad"
-    | "onOptionsLoadFinal"
-    | "onOptionsLoadStart"
-    | "onSaveError"
-    | "onScaleAdd"
-    | "onScaleDblClick"
-    | "onSchedulerReady"
-    | "onSchedulerResize"
-    | "onTemplatesReady"
-    | "onTimelineCreated"
-    | "onViewChange"
-    | "onViewMoreClick"
-    | "onXLE"
-    | "onXLS"
-    | "onXScaleClick"
-    | "onXScaleDblClick"
-    | "onYScaleClick"
-    | "onYScaleDblClick";
-
-interface SchedulerTemplates {
-    /**
-     * specifies the date in the header of the view
-     * @param start the start date of the view
-     * @param end the end date of the view
-     */
-    agenda_date(start: Date, end: Date): string;
-
-    /**
-     * specifies the text in the second column of the Agenda view
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    agenda_text(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date in the first column of the Agenda view
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    agenda_time(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the format of dates that are set by means of API methods. Used to parse incoming dates
-     * @param date the date which needs formatting
-     */
-    api_date(date: Date): string;
-
-    /**
-     * specifies the format of the date in a cell
-     * @param date the cell's date
-     */
-    calendar_date(date: Date): string;
-
-    /**
-     * specifies the date in the header of the calendar
-     * @param date the date which needs formatting
-     */
-    calendar_month(date: Date): string;
-
-    /**
-     * specifies the day name in the week sub-header of the view
-     * @param date the date which needs formatting
-     */
-    calendar_scale_date(date: Date): string;
-
-    /**
-     * specifies the date format of the lightbox's start and end date inputs
-     * @param date the date which needs formatting
-     */
-    calendar_time(date: Date): string;
-
-    /**
-     * specifies the date in the header of the Day and Units views
-     * @param date the date which needs formatting
-     */
-    day_date(date: Date): string;
-
-    /**
-     * specifies the date in the sub-header of the Day view
-     * @param date the date which needs formatting
-     */
-    day_scale_date(date: Date): string;
-
-    /**
-     * specifies the CSS class that will be applied to the highlighted event's duration on the time scale
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param ev the event's object
-     */
-    drag_marker_class(start: Date, end: Date, ev: any): void;
-
-    /**
-     * specifies the content of the highlighted block  on the time scale
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param ev the event's object
-     */
-    drag_marker_content(start: Date, end: Date, ev: any): void;
-
-    /**
-     * specifies the date of an event. Applied to one-day events only
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    event_bar_date(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the event's text. Applied to multi-day events only
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event's object
-     */
-    event_bar_text(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the CSS class that will be applied to the event's container
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param ev the event's object
-     */
-    event_class(start: Date, end: Date, ev: any): string;
-
-    /**
-     * specifies the time part of the start and end dates of the event. Mostly used by other templates for presenting time periods
-     * @param date the date which needs formatting
-     */
-    event_date(date: Date): string;
-
-    /**
-     * specifies the event's header
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event's object
-     */
-    event_header(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the event's text
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    event_text(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the items of the Y-Axis
-     * @param date the date which needs formatting
-     */
-    hour_scale(date: Date): string;
-
-    /**
-     * specifies the format of requests in the dynamic loading mode
-     * @param date the date which needs formatting
-     */
-    load_format(date: Date): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param start the start date of the view
-     * @param end the end date of the view
-     */
-    map_date(start: Date, end: Date): string;
-
-    /**
-     * specifies the text in the second column of the view
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    map_text(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date in the first column of the view
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    map_time(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date of the event in the Google Maps popup marker
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    marker_date(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the text of the event in the Google Maps popup marker
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    marker_text(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param date the date which needs formatting
-     */
-    month_date(date: Date): string;
-
-    /**
-     * specifies the CSS class that will be applied to a day cell
-     * @param date the date which needs formatting
-     */
-    month_date_class(date: Date): string;
-
-    /**
-     * specifies the format of the day in a cell
-     * @param date the date which needs formatting
-     */
-    month_day(date: Date): string;
-
-    /**
-     * specifies the presentation of the 'View more' link in the cell of the Month view
-     * @param date the date of a month cell
-     * @param count the number of events in the cell
-     */
-    month_events_link(date: Date, count: number): string;
-
-    /**
-     * specifies the date format of the X-Axis of the view
-     * @param date the date which needs formatting
-     */
-    month_scale_date(date: Date): string;
-
-    /**
-     * specifies the content of the pop-up edit form
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    quick_info_content(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date of the pop-up edit form
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    quick_info_date(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the title of the pop-up edit form
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    quick_info_title(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date string before events parse and load methods
-     * @param start the date string before assigned to event
-     */
-    parse_date(date: string): string;
-
-    /**
-     * specifies the drop-down time selector in the lightbox
-     */
-    time_picker(): string;
-
-    /**
-     * specifies the format of start and end dates displayed in the tooltip
-     * @param date the date which needs formatting
-     */
-    tooltip_date_format(date: Date): string;
-
-    /**
-     * specifies the text of tooltips
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    tooltip_text(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the event's text
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     * @param cellDate the date of a day cell that a one-day event or a single occurrence of <br> the recurring event displays in
-     * @param pos the position of a single occurrence in the recurring event: 'start' - the first occurrence, 'end' - the last occurrence, 'middle' - for remaining occurrences
-     */
-    week_agenda_event_text(start: Date, end: Date, event: any, cellDate: Date, pos: string): string;
-
-    /**
-     * the date of a day cell of the view
-     * @param date the date which needs formatting
-     */
-    week_agenda_scale_date(date: Date): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param start the start date of the view
-     * @param end the end date of the view
-     */
-    week_date(start: Date, end: Date): string;
-
-    /**
-     * specifies the CSS class that will be applied to a day cell
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    week_date_class(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date in the sub-header of the view
-     * @param date the date which needs formatting
-     */
-    week_scale_date(date: Date): string;
-
-    /**
-     * a string from an XML file is converted into a date object in conformity with this template
-     * @param date the string which need to be parsed
-     */
-    xml_date(date: Date): Date;
-
-    /**
-     * a date object is converted into a string in conformity with this template. Used to send data back to the server
-     * @param date the date which needs formatting
-     */
-    xml_format(date: Date): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param date the date which needs formatting
-     */
-    year_date(date: Date): string;
-
-    /**
-     * specifies the month's name in the header of a month block of the view.
-     * @param date the date which needs formatting
-     */
-    year_month(date: Date): string;
-
-    /**
-     * specifies the day's name in the sub-header of a month block of the view
-     * @param date the date which needs formatting
-     */
-    year_scale_date(date: Date): string;
-
-    /**
-     * specifies the tooltip over a day cell containing some scheduled event(s)
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    year_tooltip(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the lightbox's header
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    lightbox_header(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param start the start date of the view
-     * @param end the end date of the view
-     */
-    grid_date(start: Date, end: Date): string;
-
-    /**
-     * specifies the format of dates in columns with id='date'
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param ev the event object
-     */
-    grid_full_date(start: Date, end: Date, ev: any): string;
-
-    /**
-     * specifies the format of dates in columns with id='start_date' or id='end_date'
-     * @param date the date which needs formatting
-     */
-    grid_single_date(date: Date): string;
-
-    /**
-     * specifies the text in the columns
-     * @param field_name the column's id
-     * @param event the event object
-     */
-    grid_field(field_name: string, event: any): string;
-
-    /**
-     * specifies the number of scheduled events in a cell of the view
-     * @param evs an array of objects of events contained in a cell
-     * @param date the date of a cell
-     */
-    timeline_cell_value(evs: any[], date: Date): string;
-
-    /**
-     * specifies the CSS class that will be applied to a cell of the view
-     * @param evs an array of objects of events contained in a cell (defined only in the 'cell' mode)
-     * @param date the date of a column
-     * @param section the section object
-     */
-    timeline_cell_class(evs: any[], date: Date, section: any): string;
-
-    /**
-     * specifies the name of a CSS class that will be applied to items of the X-Axis
-     * @param date the date which needs formatting
-     */
-    timeline_scalex_class(date: Date): string;
-
-    /**
-     * specifies the name of a CSS class that will be applied to items of the second X-Axis
-     * @param date the date which needs formatting
-     */
-    timeline_second_scalex_class(date: Date): string;
-
-    /**
-     * specifies the name of a CSS class that will be applied to items of the Y-Axis
-     * @param key the section's id
-     * @param label the section's label
-     * @param section the section object that contains the 'key' and 'label' properties
-     */
-    timeline_scaley_class(key: string, label: string, section: any): string;
-
-    /**
-     * specifies items of the Y-Axis
-     * @param key the section's id (key)
-     * @param label the section's label
-     * @param section the section object containing the 'key' and 'label' properties
-     */
-    timeline_scale_label(key: string, label: string, section: any): string;
-
-    /**
-     * specifies the tooltip over a day cell containing some scheduled event(s)
-     * @param start the date when an event is scheduled to begin
-     * @param end the date when an event is scheduled to be completed
-     * @param event the event object
-     */
-    timeline_tooltip(start: Date, end: Date, event: any): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param date1 the date when an event is scheduled to begin
-     * @param date2 the date when an event is scheduled to be completed
-     */
-    timeline_date(date1: Date, date2: Date): string;
-
-    /**
-     * specifies items of the X-Axis
-     * @param date the date which needs formatting
-     */
-    timeline_scale_date(date: Date): string;
-
-    /**
-     * specifies items of the second X-Axis
-     * @param date the date which needs formatting
-     */
-    timeline_second_scale_date(date: Date): string;
-
-    /**
-     * specifies the date in the header of the view
-     * @param date the date which needs formatting
-     */
-    units_date(date: Date): string;
-
-    /**
-     * specifies items of the X-Axis
-     * @param key the unit's id (key)
-     * @param label the unit's label
-     * @param unit the unit object containing the 'key' and 'label' properties
-     */
-    units_scale_text(key: string, label: string, unit: any): string;
-}
-
-interface SchedulerConfigOptions {
-    /**
-     * 'says' to present the numbers of days in the Month view as clickable links that open the related day in the specified view
-     */
-    active_link_view: string;
-
-    /**
-     * sets the date to display events until
-     */
-    agenda_end: Date;
-
-    /**
-     * sets the date to start displaying events from
-     */
-    agenda_start: Date;
-
-    /**
-     * specifies how to display the default error notification in case the XML data loading failed
-     */
-    ajax_error: string | boolean;
-
-    /**
-     * 'says' to show multi-day events in  the regular way (as one-day events are displayed)
-     */
-    all_timed: boolean | string;
-
-    /**
-     * sets the date format that will be used by the addEvent() method to parse the start_date, end_date properties in case they are specified as strings
-     */
-    api_date: string;
-
-    /**
-     * enables automatic changing of the end event date after changing the start date
-     */
-    auto_end_date: boolean;
-
-    /**
-     * stores a collection of buttons resided in the left bottom corner of the lightbox
-     */
-    buttons_left: any[];
-
-    /**
-     * stores a collection of buttons resided in the right bottom corner of the lightbox
-     */
-    buttons_right: any[];
-
-    /**
-     * sets the maximum number of events in a cascade
-     */
-    cascade_event_count: number;
-
-    /**
-     * sets the 'cascade' display mode
-     */
-    cascade_event_display: boolean;
-
-    /**
-     * sets the left margin for a cascade of events
-     */
-    cascade_event_margin: number;
-
-    /**
-     * activates/disables checking of limits
-     */
-    check_limits: boolean;
-
-    /**
-     * sets the maximum allowable number of events per time slot
-     */
-    collision_limit: number;
-
-    /**
-     * forces the scheduler container to automatically change its size to show the whole content without scrolling
-     */
-    container_autoresize: boolean;
-
-    /**
-     * sets the date format for the X-Axis of the Week and Units views
-     */
-    day_date: string;
-
-    /**
-     * enables the possibility to create events by double click
-     */
-    dblclick_create: boolean;
-
-    /**
-     * sets the date format used by the templates 'day_date', 'week_date', 'day_scale_date' for setting date in the views' headers
-     */
-    default_date: string;
-
-    /**
-     * sets a timeout (in milliseconds) that wraps the api/scheduler_updateview.md and api/scheduler_setcurrentview.md calls  ( that cause re-drawing of the scheduler )
-     */
-    delay_render: number;
-
-    /**
-     * 'says' to use the extended form while creating new events by drag or double click
-     */
-    details_on_create: boolean;
-
-    /**
-     * 'says' to open the lightbox after double clicking on an event
-     */
-    details_on_dblclick: boolean;
-
-    /**
-     * defines whether the marked(blocked) time spans should be highlighted in the scheduler
-     */
-    display_marked_timespans: boolean;
-
-    /**
-     * sets the default background color for the events retrieved by the showEvent() method
-     */
-    displayed_event_color: string;
-
-    /**
-     * sets the default font color for the events retrieved by the showEvent() method
-     */
-    displayed_event_text_color: string;
-
-    /**
-     * enables the possibility to create new events by drag-and-drop
-     */
-    drag_create: boolean;
-
-    /**
-     * highlights the event's duration on the time scale when you drags an event over the scheduler
-     */
-    drag_highlight: boolean;
-
-    /**
-     * restrict dragging events to the calling scheduler from any other scheduler(s)
-     */
-    drag_in: boolean;
-
-    /**
-     * enables the possibility to drag the lightbox by the header
-     */
-    drag_lightbox: boolean;
-
-    /**
-     * enables the possibility to move events by drag-and-drop
-     */
-    drag_move: boolean;
-
-    /**
-     * restrict dragging events from the calling scheduler to any other scheduler(s)
-     */
-    drag_out: boolean;
-
-    /**
-     * enables the possibility to resize events by drag-and-drop
-     */
-    drag_resize: boolean;
-
-    /**
-     * 'says' to open the lightbox while creating new events
-     */
-    edit_on_create: boolean;
-
-    /**
-     * sets the initial duration of events in minutes
-     */
-    event_duration: number;
-
-    /**
-     * sets the minimum value for the hour scale (Y-Axis)
-     */
-    first_hour: number;
-
-    /**
-     * moves views' tabs from the left to the right side
-     */
-    fix_tab_position: boolean;
-
-    /**
-     * enables setting of the event's duration to the full day
-     */
-    full_day: boolean;
-
-    /**
-     * specifies whether events retrieved by the showEvent method should be highlighted while displaying
-     */
-    highlight_displayed_event: boolean;
-
-    /**
-     * sets the time format of Y-Axis. Also used in the default event and lighbox  templates for setting the time part.
-     */
-    hour_date: string;
-
-    /**
-     * sets the height of an hour unit in pixels
-     */
-    hour_size_px: number;
-
-    /**
-     * stores a collection of icons visible in the side edit menu of the event's box
-     */
-    icons_edit: any[];
-
-    /**
-     * stores a collection of icons visible in the side selection menu of the event's box
-     */
-    icons_select: any[];
-
-    /**
-     * defines whether the date specified in the 'End by' field should be exclusive or inclusive
-     */
-    include_end_by: boolean;
-
-    /**
-     * disables the keyboard navigation in the scheduler
-     */
-    key_nav: boolean;
-
-    /**
-     * sets the maximum value of the hour scale (Y-Axis)
-     */
-    last_hour: number;
-
-    /**
-     * adds the dotted left border to the scheduler
-     */
-    left_border: boolean;
-
-    /**
-     * specifies the lightbox object
-     */
-    lightbox: any;
-
-    /**
-     * defines the lightbox's behavior, when the user opens the lightbox to edit a recurring event
-     */
-    lightbox_recurring: string;
-
-    /**
-     * denies to drag events out of the visible area of the scheduler
-     */
-    limit_drag_out: boolean;
-
-    /**
-     * sets the right border of the allowable date range
-     */
-    limit_end: Date;
-
-    /**
-     * sets the left border of the allowable date range
-     */
-    limit_start: Date;
-
-    /**
-     * sets the max and min values of the time selector in the lightbox to the values of the 'last_hour' and 'first_hour' options
-     */
-    limit_time_select: boolean;
-
-    /**
-     * limits the date period during which the user can view the events
-     */
-    limit_view: boolean;
-
-    /**
-     * sets the format of server request parameters 'from', 'to' in case of dynamic loading
-     */
-    load_date: string;
-
-    /**
-     * sets the date to display events until
-     */
-    map_end: Date;
-
-    /**
-     * sets the position that will be displayed on the map in case the event's location can't be identified
-     */
-    map_error_position: any;
-
-    /**
-     * the maximum width of the Google Maps's popup marker in the Map view
-     */
-    map_infowindow_max_width: number;
-
-    /**
-     * sets the initial position of the map
-     */
-    map_initial_position: any;
-
-    /**
-     * sets the initial zoom of Google Maps in the Map view
-     */
-    map_initial_zoom: number;
-
-    /**
-     * activates attempts to resolve the event's location, if the database doesn't have  the event's coordinates stored
-     */
-    map_resolve_event_location: boolean;
-
-    /**
-     * enables/disables prompts asking the user to share their location for displaying on the map
-     */
-    map_resolve_user_location: boolean;
-
-    /**
-     * sets the date to start displaying events from
-     */
-    map_start: Date;
-
-    /**
-     * sets the type of Google Maps
-     */
-    map_type: any;
-
-    /**
-     * sets the zoom that will be used to show the user's location, if the user agrees to the browser's offer to show it
-     */
-    map_zoom_after_resolve: number;
-
-    /**
-     * enables/disables the marker displaying the current time
-     */
-    mark_now: boolean;
-
-    /**
-     * sets the maximum number of events displayable in a cell
-     */
-    max_month_events: number;
-
-    /**
-     * specifies the mini calendar object
-     */
-    minicalendar: any;
-
-    /**
-     * sets the format for the header of the Month view
-     */
-    month_date: string;
-
-    /**
-     * sets the format for the day in the cells of the Month and Year views
-     */
-    month_day: string;
-
-    /**
-     * sets the minimum height of cells in the Month view
-     */
-    month_day_min_height: number;
-
-    /**
-     * enables rendering of multi-day events
-     */
-    multi_day: boolean;
-
-    /**
-     * sets the height of the area that displays multi-day events
-     */
-    multi_day_height_limit: number | boolean;
-
-    /**
-     * enables the possibility to render the same events in several sections of the Timeline or Units view
-     */
-    multisection: boolean;
-
-    /**
-     * specifies whether while dragging events that assigned to several sections of the Timeline or Units view, all  instances should be dragged at once ('true') or just the selected one ('false')
-     */
-    multisection_shift_all: boolean;
-
-    /**
-     * sets the date for the current-time marker in the Limit extension (enabled by the configuration - mark_now)
-     */
-    now_date: Date;
-
-    /**
-     * allows working with recurring events independently of time zones
-     */
-    occurrence_timestamp_in_utc: boolean;
-
-    /**
-     * defines the 'saving' behaviour for the case, when  the user edits the event's text directly in the event's box
-     */
-    positive_closing: boolean;
-
-    /**
-     * preserves the visible length of an event while dragging along a non-linear time scale
-     */
-    preserve_length: boolean;
-
-    /**
-     * cancels preserving of the current scroll position while navigating between dates of the same view
-     */
-    preserve_scroll: boolean;
-
-    /**
-     * enables/disables caching of GET requests in the browser
-     */
-    prevent_cache: boolean;
-
-    /**
-     * defines whether the event form will appear from the left/right side of the screen or near the selected event
-     */
-    quick_info_detached: boolean;
-
-    /**
-     * activates the read-only mode for the scheduler
-     */
-    readonly: boolean;
-
-    /**
-     * activates the read-only mode for the lightbox
-     */
-    readonly_form: boolean;
-
-    /**
-     * specifies working days that will affect the recurring event when the user selects the ""Every workday" option in the lightbox
-     */
-    recurring_workdays: any[];
-
-    /**
-     * sets the date format of the 'End by' field in the 'recurring' lightbox
-     */
-    repeat_date: string;
-
-    /**
-     * prevents including past days to events with the 'weekly' recurrence
-     */
-    repeat_precise: boolean;
-
-    /**
-     * enables the possibility to resize multi-day events in the Month view by drag-and-drop
-     */
-    resize_month_events: boolean;
-
-    /**
-     * enables the possibility to resize single-day events in the Month view by drag-n-drop
-     */
-    resize_month_timed: boolean;
-
-    /**
-     * sets the initial position of the vertical scroll in the scheduler (an hour in the 24-hour clock format)
-     */
-    scroll_hour: number;
-
-    /**
-     * specifies the delimeter that will be used to separate several sections/units in the related data property of the event
-     */
-    section_delemiter: string;
-
-    /**
-     * shows/hides the select bar in the event's box
-     */
-    select: boolean;
-
-    /**
-     * allows preventing short events from overlapping
-     */
-    separate_short_events: boolean;
-
-    /**
-     * enables converting server-side dates from UTC to a local time zone (and backward) while sending data to the server
-     */
-    server_utc: boolean;
-
-    /**
-     * enables showing a progress/spinner while data is loading (useful for dynamic loading)
-     */
-    show_loading: boolean;
-
-    /**
-     * activates/disables the 'quick_info' extension (pop-up task's details form)
-     */
-    show_quick_info: boolean;
-
-    /**
-     * sets the start day of weeks
-     */
-    start_on_monday: boolean;
-
-    /**
-     * sets the minimum step (in minutes) for event's time values
-     */
-    time_step: number;
-
-    /**
-     * enables/disables the touch support in the scheduler
-     */
-    touch: boolean | string;
-
-    /**
-     * defines the time period in milliseconds that is used to differ the long touch gesture from the scroll gesture
-     */
-    touch_drag: number | boolean;
-
-    /**
-     * enables/disables prompting messages in the right top corner of the screen
-     */
-    touch_tip: boolean;
-
-    /**
-     * disables dhtmxlScheduler's tooltips on the touch devices
-     */
-    touch_tooltip: boolean;
-
-    /**
-     * updates the mode when the scheduler fully repaints itself on any action
-     */
-    update_render: boolean;
-
-    /**
-     * 'says' events to occupy the whole width of the cell
-     */
-    use_select_menu_space: boolean;
-
-    /**
-     * sets the format of the date in the sub-header of the Month view
-     */
-    week_date: string;
-
-    /**
-     * enables/disables displaying the standard (wide) lightbox instead of the short one
-     */
-    wide_form: boolean;
-
-    /**
-     * sets the date format that is used to parse data from the data set
-     */
-    xml_date: string;
-
-    /**
-     * sets the number of rows in the Year view
-     */
-    year_x: number;
-
-    /**
-     * sets the number of columns in the Year view
-     */
-    year_y: number;
-}
-
-interface SchedulerDateHelpers {
-    add(origin: Date, count: number, unit: string): Date;
-    add_map(origin: Date, count: number): Date;
-    copy(origin: Date): Date;
-
-    date_part(origin: Date): Date;
-    time_part(origin: Date): Date;
-
-    day_start(origin: Date): Date;
-    month_start(origin: Date): Date;
-    week_start(origin: Date): Date;
-    year_start(origin: Date): Date;
-
-    getISOWeek(origin: Date): number;
-    getUTCISOWeek(origin: Date): number;
-
-    date_to_str(format: string): any;
-    str_to_date(format: string): any;
-    convert_to_utc(origin: Date): Date;
-    to_fixed(value: number): string;
-}
-
-interface SchedulerHotkeys {
-    edit_save: number;
-    edit_cancel: number;
-}
-
-interface SchedulerLocaleDate {
-    month_full: string[];
-    month_short: string[];
-    day_full: string[];
-    day_short: string[];
-}
-
-interface SchedulerLocaleLabels {
-    dhx_cal_today_button: string;
-    day_tab: string;
-    week_tab: string;
-    month_tab: string;
-    new_event: string;
-    icon_save: string;
-    icon_cancel: string;
-    icon_details: string;
-    icon_edit: string;
-    icon_delete: string;
-    confirm_closing: string;
-    confirm_deleting: string;
-    section_description: string;
-    section_time: string;
-    unit_tab: string;
-}
-
-interface SchedulerLocale {
-    date: SchedulerLocaleDate;
-    labels: SchedulerLocaleLabels;
-}
-
-interface SchedulerSizes {
-    /**
-     * the height of day cells in the month view
-     */
-    bar_height: number;
-
-    /**
-     * the width of the event text input    140    day
-     */
-    editor_width: number;
-
-    /**
-     * increases the length of the lightbox
-     */
-    lightbox_additional_height: number;
-
-    /**
-     * the width of the date column in the Map view
-     */
-    map_date_width: number;
-
-    /**
-     * the width of the description column in the Map view
-     */
-    map_description_width: number;
-
-    /**
-     * the left margin of the main scheduler area
-     */
-    margin_left: number;
-
-    /**
-     * the bottom margin of the main scheduler area
-     */
-    margin_top: number;
-
-    /**
-     * the width of the selection menu
-     */
-    menu_width: number;
-
-    /**
-     * the minimal height of the event box
-     */
-    min_event_height: number;
-
-    /**
-     * the top offset of an event in a cell in the month view
-     */
-    month_scale_height: number;
-
-    /**
-     * the height of the navigation bar
-     */
-    nav_height: number;
-
-    /**
-     * the height of the X-Axis
-     */
-    scale_height: number;
-
-    /**
-     * the width of the Y-Axis
-     */
-    scale_width: number;
-
-    /**
-     * the width of the scrollbar area
-     */
-    scroll_width: number;
-}
-
-interface SchedulerEnterprise {
-    /**
-     * Creates a new instance of Scheduler
-     */
-    getSchedulerInstance(): SchedulerStatic;
-}
-
-interface SchedulerStatic {
-    templates: SchedulerTemplates;
-    config: SchedulerConfigOptions;
-    date: SchedulerDateHelpers;
-    keys: SchedulerHotkeys;
-    skin: String;
-    version: String;
-    xy: SchedulerSizes;
-    locale: SchedulerLocale;
-
-    /**
-     * filter events that will be displayed on the day view
-     */
-    filter_day: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the week view
-     */
-    filter_week: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the month view
-     */
-    filter_month: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the year view
-     */
-    filter_year: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the agenda view
-     */
-    filter_agenda: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the timeline view
-     */
-    filter_timeline: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the units view
-     */
-    filter_units: SchedulerFilterCallback;
-
-    /**
-     * filter events that will be displayed on the grid view
-     */
-    filter_grid: SchedulerFilterCallback;
-
-    /**
-     * removes all blocking sets from the scheduler
-     */
-    deleteMarkedTimespan();
-
-    /**
-     * removes marking/blocking set by the addMarkedTimespan() and blockTime() methods
-     * @param configuration for deleting
-     */
-    deleteMarkedTimespan(config: any);
-
-    /**
-     * adds a new event
-     * @param event the event object
-     */
-    addEvent(event: any): string;
-
-    /**
-     * adds a new event and opens the lightbox to confirm
-     * @param event the event object
-     */
-    addEventNow(event: any): string;
-
-    /**
-     * marks dates, but with certain settings makes blocking (unlike blockTime() allows setting custom styling for the limit)
-     * @param config the configuration object of the timespan to mark/block
-     */
-    addMarkedTimespan(config: any): number;
-
-    /**
-     * adds a new keyboard shortcut
-     * @param shortcut the key name or the name of keys combination for a shortcut (shortcut syntax)
-     * @param handler the handler of the shortcut call
-     * @param scope the name of the context element to attach the handler function to (list of scopes)
-     */
-    addShortcut(shortcut: string, handler: () => void, scope?: any): void;
-
-    /**
-     * adds a section to the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     * @param section the object of the section to add
-     * @param parent_id the id of the parent section. Pass 'null' if you are adding a section to the root
-     */
-    addSection(section: any, parent_id: string): boolean;
-
-    /**
-     * attaches the handler to an inner event of dhtmlxScheduler
-     * @param name the event's name, case-insensitive
-     * @param handler the handler function
-     */
-    attachEvent(name: SchedulerEventName, handler: SchedulerCallback): string;
-
-    /**
-     * makes the scheduler reflect all data changes in the Backbone model and vice versa
-     * @param events the Backbone data collection
-     */
-    backbone(events: any): void;
-
-    /**
-     * blocks the specified date and applies the default 'dimmed' style to it.
-     * @param date a date to block ( if a number is provided, the parameter will be treated as a week <br> day: '0' index refers to Sunday,'6' - to Saturday )
-     * @param time_points an array <b>[start_minute,end_minute,..,start_minute_N,end_minute_N]</b>, <br> where each pair sets a certain limit range. The array can have any number of <br> such pairs
-     * @param items defines specific items of  view(s) to block
-     */
-    blockTime(date: Date | number, time_points: any[], items?: any): void;
-
-    /**
-     * calls an inner event
-     * @param name the event's name, case-insensitive
-     * @param params an array of the event-related data
-     */
-    callEvent(name: string, params: any[]): boolean;
-
-    /**
-     * changes the event's id
-     * @param id the current event's id
-     * @param new_id the new event's id
-     */
-    changeEventId(id: string, new_id: string): void;
-
-    /**
-     * checks whether the specified event occurs at the time that has already been occupied by another event(s)
-     * @param event the event object
-     */
-    checkCollision(event: any): boolean;
-
-    /**
-     * checks whether an event has some handler(s) specified
-     * @param name the event's name
-     */
-    checkEvent(name: SchedulerEventName): boolean;
-
-    /**
-     * checks whether an event resides in a timespan of a specific type
-     * @param event the event object
-     * @param timespan the timespan's type
-     */
-    checkInMarkedTimespan(event: any, timespan: string): boolean;
-
-    /**
-     * checks whether the specified event takes place at the blocked time period
-     * @param event the event object
-     */
-    checkLimitViolation(event: any): boolean;
-
-    /**
-     * removes all events from the scheduler
-     */
-    clearAll(): void;
-
-    /**
-     * closes all sections in the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     */
-    closeAllSections(): void;
-
-    /**
-     * closes the specified section in the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     * @param section_id the section's id
-     */
-    closeSection(section_id: string): void;
-
-    /**
-     * collapses the expanded scheduler back to the normal size
-     */
-    collapse(): void;
-
-    /**
-     * creates the Grid view in the scheduler
-     * @param config the configuration object of the Grid view
-     */
-    createGridView(config: any): void;
-
-    /**
-     * creates the Timeline view in the scheduler
-     * @param config the configuration object of the Timeline view
-     */
-    createTimelineView(config: any): void;
-
-    /**
-     * creates the Units view in the scheduler
-     * @param config the configuration object of the Units view
-     */
-    createUnitsView(config: any): void;
-
-    /**
-     * deletes all sections from  the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     */
-    deleteAllSections(): void;
-
-    /**
-     * deletes the specified event
-     * @param id the event's id
-     */
-    deleteEvent(id: string | number): void;
-
-    /**
-     * removes marking/blocking set by the addMarkedTimespan() and blockTime() methods
-     * @param id the timespan's id
-     */
-    deleteMarkedTimespan(id: string): void;
-
-    /**
-     * deletes a section from  the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     * @param section_id the section's id
-     */
-    deleteSection(section_id: string): boolean;
-
-    /**
-     * destroys previously created mini-calendar
-     * @param name the mini-calendar's object (if not specified, the scheduler attempts <br> to destroy the last created mini calendar)
-     */
-    destroyCalendar(name?: any): void;
-
-    /**
-     * detaches a handler from an event (which was attached before by the attachEvent method)
-     * @param id the event's id
-     */
-    detachEvent(id: string): void;
-
-    /**
-     * opens the inline editor to alter the event's text  (the editor in the event's box)
-     * @param id the event's id
-     */
-    edit(id: string): void;
-
-    /**
-     * closes the inline event editor, if it's currently open
-     * @param id the event's id
-     */
-    editStop(id: string): void;
-
-    /**
-     * closes the lightbox
-     * @param mode if set to <i>true</i>, the changes, made in the lightbox, will be saved before closing. <br> If - <i>false</i>, the changes will be cancelled.
-     * @param box the HTML container for the lightbox
-     */
-    endLightbox(mode: boolean, box?: HTMLElement): void;
-
-    /**
-     * expands the scheduler to the full screen view
-     */
-    expand(): void;
-
-    /**
-     * gives access to the objects of lightbox's sections
-     * @param name the name of a lightbox section
-     */
-    formSection(name: string): any;
-
-    /**
-     * returns the current cursor-pointed date and section (if defined)
-     * @param e a native event object
-     */
-    getActionData(e: Event): any;
-
-    /**
-     * returns the event object by its id
-     * @param event_id the  event's id
-     */
-    getEvent(event_id: string | number): any;
-
-    /**
-     * gets the event's end date
-     * @param id the event's id
-     */
-    getEventEndDate(id: string | number): Date;
-
-    /**
-     * gets the event's start date
-     * @param id the event's id
-     */
-    getEventStartDate(id: string | number): Date;
-
-    /**
-     * gets the event's text
-     * @param id the event's id
-     */
-    getEventText(id: string | number): string;
-
-    /**
-     * returns a collection of events which occur during the specified period
-     * @param from the start date of the period
-     * @param to the end date of the period
-     */
-    getEvents(from?: Date, to?: Date): any;
-
-    /**
-     * gets the label of a select control in the lightbox
-     * @param property the name of a data property that the control is mapped to
-     * @param key the option's id. This parameter is compared with the event's data property <br> to assign the select's option to an event
-     */
-    getLabel(property: string, key: string | number): any;
-
-    /**
-     * gets the lightbox's HTML object element
-     */
-    getLightbox(): HTMLElement;
-
-    /**
-     * returns all occurrences of a recurring event
-     * @param id the id of a recurring event
-     * @param number the maximum number of occurrences to return (by default, 100)
-     */
-    getRecDates(id: string, number: number): any;
-
-    /**
-     * gets the object of the currently displayed event
-     * @param id the event's id
-     */
-    getRenderedEvent(id: string): HTMLElement;
-
-    /**
-     * gets the object of the specified section in the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     * @param section_id the section's id
-     */
-    getSection(section_id: string): any;
-
-    /**
-     * gets the current state of the scheduler
-     */
-    getState(): any;
-
-    /**
-     * gets the user data associated with the specified event
-     * @param id the event's id
-     * @param name the user data name
-     */
-    getUserData(id: string, name: string): any;
-
-    /**
-     * hides the lightbox modal overlay that blocks interactions with the remaining screen
-     * @param box an element to hide
-     */
-    hideCover(box?: HTMLElement): void;
-
-    /**
-     * hides the pop-up event form (if it's currently active)
-     */
-    hideQuickInfo(): void;
-
-    /**
-     * highlights the event's duration on the time scale
-     * @param event the event object
-     */
-    highlightEventPosition(event: any): void;
-
-    /**
-     * constructor. Initializes a dhtmlxScheduler object
-     * @param container an HTML container ( or its id) where a dhtmlxScheduler object will be initialized
-     * @param date the initial date of the scheduler (by default, the current date)
-     * @param view the name of the initial view (by default, "week")
-     */
-    init(container: string | HTMLElement, date?: Date, view?: string): void;
-
-    /**
-     * inverts the specified time zones
-     * @param zones an array **[start_minute,end_minute,..,start_minute_N,end_minute_N]** <br >where each pair sets a certain limit range (in minutes). The array can have any <br> number of such pairs
-     */
-    invertZones(zones: any[]): void;
-
-    /**
-     * checks whether the calendar is currently opened in the scheduler
-     */
-    isCalendarVisible(): boolean | HTMLElement;
-
-    /**
-     * checks whether the specified event one-day or multi-day
-     * @param event the event object
-     */
-    isOneDayEvent(event: any): boolean;
-
-    /**
-     * checks whether a view with the specified name exists
-     * @param name the view name
-     */
-    isViewExists(name: string): boolean;
-
-    /**
-     * 'says' to change the active date in the mini calendar each time, the active date in the scheduler is changed
-     * @param calendar the mini calendar object
-     * @param shift a function that defines the difference between active dates in the mini-calendar <br> and the scheduler. The function takes the scheduler's date as a parameter and <br> returns the date that should be displayed in the mini calendar
-     */
-    linkCalendar(calendar: any, shift: SchedulerCallback): void;
-
-    /**
-     * loads data to the scheduler from an external data source
-     * @param url the server side url (may be a static file or a server side script which outputs data <br>  as XML)
-     * @param type <i>('json', 'xml', 'ical')</i> the data type. The default value - <i>'xml'</i>
-     * @param callback the callback function
-     */
-    load(url: string, type?: string, callback?: SchedulerCallback): void;
-
-    /**
-     * applies a css class to the specified date
-     * @param calendar the calendar object
-     * @param date the date to mark
-     * @param css the name of a css class
-     */
-    markCalendar(calendar: any, date: Date, css: string): void;
-
-    /**
-     * marks and/or blocks date(s) by applying the default or a custom style to them. Marking is cancelled right after any internal update in the app. Can be used for highlighting
-     * @param config the configuration object of the timespan to mark/block
-     */
-    markTimespan(config: any): void;
-
-    /**
-     * opens all sections in the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     */
-    openAllSections(): void;
-
-    /**
-     * opens the specified section in the currently active view (if the opened view isn't Timeline in the 'Tree' mode - the method will be ignored)
-     * @param section_id the section's id
-     */
-    openSection(section_id: string): void;
-
-    /**
-     * loads data from a client-side resource
-     * @param data a string or object which represents data
-     * @param type (<i>'json', 'xml', 'ical'</i>) the data type. The default value - <i>'xml'</i>
-     */
-    parse(data: any, type?: string): void;
-
-    /**
-     * removes a keyboard shortcut
-     * @param shortcut the key name or the name of keys combination for a shortcut (shortcut syntax)
-     * @param scope the element to which the shortcut is attached (list of scopes)
-     */
-    removeShortcut(shortcut: string, scope: any): void;
-
-    /**
-     * creates a mini calendar
-     * @param config the calendar configuration object
-     */
-    renderCalendar(config: any): void;
-
-    /**
-     * generates HTML content for a custom event's box
-     * @param container the event container
-     * @param event the event object
-     */
-    renderEvent(container: HTMLElement, event: any): boolean;
-
-    /**
-     * removes the current lightbox's HTML object element
-     */
-    resetLightbox(): void;
-
-    /**
-     * scrolls the specified number of units in the Units view
-     * @param step the number of units to scroll (<i>set the positive value to scroll units to the right <br> side,  the negative value - to the left side</i>).
-     */
-    scrollUnit(step: number): void;
-
-    /**
-     * selects the specified event
-     * @param id the event's id
-     */
-    select(id: string): void;
-
-    /**
-     * returns a list of options
-     * @param list_name the name of a list
-     * @param options an array of options
-     */
-    serverList(list_name: string, options?: any[]): void;
-
-    /**
-     * displays the specified view and date
-     * @param date the date to display
-     * @param view the name of a view to display
-     */
-    setCurrentView(date?: Date, view?: string): void;
-
-    /**
-     * adds a new event to the scheduler's data pool
-     * @param id the event's id
-     * @param event the event object
-     */
-    setEvent(id: string | number, event: any): void;
-
-    /**
-     * sets the event's end date
-     * @param id the event's id
-     * @param date the new end date of the event
-     */
-    setEventEndDate(id: string, date: Date): void;
-
-    /**
-     * sets the event's start date
-     * @param id the event's id
-     * @param date the new start date of the event
-     */
-    setEventStartDate(id: string, date: Date): void;
-
-    /**
-     * sets the event's text
-     * @param id the event's id
-     * @param text the new text of the event
-     */
-    setEventText(id: string, text: string): void;
-
-    /**
-     * forces the lightbox to resize
-     */
-    setLightboxSize(): void;
-
-    /**
-     * sets the mode that allows loading data by parts (enables the dynamic loading)
-     * @param mode the loading mode
-     */
-    setLoadMode(mode: string): void;
-
-    /**
-     * sets the user data associated with the specified event
-     * @param id the event's id
-     * @param name the user data name
-     * @param value the user data value
-     */
-    setUserData(id: string, name: string, value: any): void;
-
-    /**
-     * shows the lightbox modal overlay that blocks interactions with the remaining screen
-     * @param box an element to hide
-     */
-    showCover(box?: HTMLElement): void;
-
-    /**
-     * shows and highlights the specified event in the current or specified view
-     * @param id the event's id
-     * @param view the view name
-     */
-    showEvent(id: string, view?: string): void;
-
-    /**
-     * opens the lightbox for the specified event
-     * @param id the event's id
-     */
-    showLightbox(id: string): void;
-
-    /**
-     * displays the pop-up event form for the specified event
-     * @param id the event's id
-     */
-    showQuickInfo(id: string): void;
-
-    /**
-     * shows a custom lightbox in the specified HTML container centered on the screen
-     * @param id the event's id
-     * @param box the lightbox's HTML container
-     */
-    startLightbox(id: string, box: HTMLElement): void;
-
-    /**
-     * converts scheduler's data to the ICal format
-     * @param header sets the value for the content's header field
-     */
-    toICal(header?: string): string;
-
-    /**
-     * converts scheduler's data into the JSON format
-     */
-    toJSON(): string;
-
-    /**
-     * exports the  current view to a PDF document (can be used for printing)
-     * @param url the path to the server-side PDF converter
-     * @param mode the color map of the resulting PDF document
-     */
-    toPDF(url: string, mode?: string): void;
-
-    /**
-     * exports several scheduler's views to a PDF document (can be used for printing)
-     * @param from the date to start export events from
-     * @param to the date to export events until
-     * @param view the name of a view that the export should be applied to
-     * @param path the path to the php file which generates a PDF file (<a href="pdf.md#configuringservice">details</a>)
-     * @param color the color map in use
-     */
-    toPDFRange(from: Date, to: Date, view: string, path: string, color: string): void;
-
-    /**
-     * converts scheduler's data into the XML format
-     */
-    toXML(): string;
-
-    /**
-     * generates a unique ID (unique inside the current scheduler, not GUID)
-     */
-    uid(): void;
-
-    /**
-     * removes blocking set by the blockTime() method
-     * @param days (<i>Date, number,array, string</i>) days that should be limited
-     * @param zones the period in minutes that should be limited. Can be set to 'fullday' value <br> to limit the entire day
-     * @param sections allows blocking date(s) just for specific items of specific views. BTW, the specified date(s) will be blocked just in the related view(s)
-     */
-    unblockTime(days: any, zones?: any[], sections?: any): void;
-
-    /**
-     * removes a css class from the specified date
-     * @param calendar the mini calendar object
-     * @param date the date to unmark
-     * @param css the name of a css class to remove
-     */
-    unmarkCalendar(calendar: any, date: Date, css: string): void;
-
-    /**
-     * removes marking/blocking set by the markTimespan() method
-     * @param divs a timespan to remove marking/blocking from (or an array of timespans)
-     */
-    unmarkTimespan(divs: HTMLElement | any[]): void;
-
-    /**
-     * unselects the specified event
-     * @param id the event's id (if not specified, the currently selected event will be unselected)
-     */
-    unselect(id?: string): void;
-
-    /**
-     * displays the specified date in the mini calendar
-     * @param calendar the mini calendar object
-     * @param new_date a new date to display in the mini calendar
-     */
-    updateCalendar(calendar: any, new_date: Date): void;
-
-    /**
-     * updates the specified collection with new options
-     * @param collection the name of the collection to update
-     * @param options the new values of the collection
-     */
-    updateCollection(collection: string, options: any[]): boolean;
-
-    /**
-     * updates the specified event
-     * @param id the event's id
-     */
-    updateEvent(id: string): void;
-
-    /**
-     * displays the specified view and date (doesn't invoke any events)
-     * the function will just refresh the current view if invoked without parameters.
-     * @param date the date to set
-     * @param view the view name
-     */
-    updateView(date?: Date, view?: string): void;
-}
-
-declare var scheduler: SchedulerStatic;
-declare var Scheduler: SchedulerEnterprise;
diff --git a/types/dhtmlxscheduler/package.json b/types/dhtmlxscheduler/package.json
deleted file mode 100644
index 7063edc6ecb24f..00000000000000
--- a/types/dhtmlxscheduler/package.json
+++ /dev/null
@@ -1,19 +0,0 @@
-{
-    "private": true,
-    "name": "@types/dhtmlxscheduler",
-    "version": "4.3.9999",
-    "nonNpm": true,
-    "nonNpmDescription": "dhtmlxscheduler",
-    "projects": [
-        "http://dhtmlx.com/docs/products/dhtmlxScheduler"
-    ],
-    "devDependencies": {
-        "@types/dhtmlxscheduler": "workspace:."
-    },
-    "owners": [
-        {
-            "name": "Maksim Kozhukh",
-            "githubUsername": "mkozhukh"
-        }
-    ]
-}
diff --git a/types/dom-speech-recognition/index.d.ts b/types/dom-speech-recognition/index.d.ts
index f03791e03e43a8..d0192fc719c585 100644
--- a/types/dom-speech-recognition/index.d.ts
+++ b/types/dom-speech-recognition/index.d.ts
@@ -76,15 +76,15 @@ declare var SpeechRecognitionEvent: {
 };
 
 // https://wicg.github.io/speech-api/#enumdef-speechrecognitionerrorcode
-type SpeechRecognitionErrorCode =
-    | "aborted"
-    | "audio-capture"
-    | "bad-grammar"
-    | "language-not-supported"
-    | "network"
-    | "no-speech"
-    | "not-allowed"
-    | "service-not-allowed";
+// type SpeechRecognitionErrorCode =
+//     | "aborted"
+//     | "audio-capture"
+//     | "bad-grammar"
+//     | "language-not-supported"
+//     | "network"
+//     | "no-speech"
+//     | "not-allowed"
+//     | "service-not-allowed";
 
 // https://wicg.github.io/speech-api/#dictdef-speechrecognitionerroreventinit
 interface SpeechRecognitionErrorEventInit extends EventInit {
diff --git a/types/dom-speech-recognition/package.json b/types/dom-speech-recognition/package.json
index c3d87de3868047..d3bfcb00103c53 100644
--- a/types/dom-speech-recognition/package.json
+++ b/types/dom-speech-recognition/package.json
@@ -7,6 +7,14 @@
     "projects": [
         "https://wicg.github.io/speech-api/"
     ],
+    "types": "index",
+    "typesVersions": {
+        "<=5.9": {
+            "*": [
+                "ts5.9/*"
+            ]
+        }
+    },
     "devDependencies": {
         "@types/dom-speech-recognition": "workspace:."
     },
diff --git a/types/dom-speech-recognition/ts5.9/dom-speech-recognition-tests.ts b/types/dom-speech-recognition/ts5.9/dom-speech-recognition-tests.ts
new file mode 100644
index 00000000000000..8b6dd40f6dd9aa
--- /dev/null
+++ b/types/dom-speech-recognition/ts5.9/dom-speech-recognition-tests.ts
@@ -0,0 +1,86 @@
+function eventMap(ev: Event, errorEv: SpeechRecognitionErrorEvent, srEvent: SpeechRecognitionEvent): void {
+    const speechRecognitionEventMap: SpeechRecognitionEventMap = {
+        audioend: ev,
+        audiostart: ev,
+        end: ev,
+        error: errorEv,
+        nomatch: srEvent,
+        result: srEvent,
+        soundend: ev,
+        soundstart: ev,
+        speechend: ev,
+        speechstart: ev,
+        start: ev,
+    };
+}
+
+const speechGrammar = new SpeechGrammar();
+const speechGrammar2: SpeechGrammar = {
+    src: "abc",
+    weight: 3,
+};
+
+const speechGrammarList = new SpeechGrammarList();
+const speechGrammarList2: SpeechGrammarList = {
+    length: 1,
+    addFromString: (string: string, weight?: number) => undefined,
+    addFromURI: (src: string, weight?: number) => undefined,
+    item: (index: number) => speechGrammar2,
+};
+const speechGrammarList3 = new webkitSpeechGrammarList();
+
+const speechRecognition = new SpeechRecognition();
+const speechRecognition2: SpeechRecognition = {
+    continuous: true,
+    grammars: speechGrammarList,
+    interimResults: false,
+    lang: "eng",
+    maxAlternatives: 2,
+    onaudioend: null,
+    onaudiostart: null,
+    onend: null,
+    onerror: null,
+    onnomatch: null,
+    onresult: null,
+    onsoundend: null,
+    onsoundstart: null,
+    onspeechend: null,
+    onspeechstart: null,
+    onstart: null,
+    abort: () => undefined,
+    start: () => undefined,
+    stop: () => undefined,
+    dispatchEvent: (ev: Event) => true,
+    addEventListener: (
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | EventListenerOptions,
+    ) => undefined,
+    removeEventListener: (
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | EventListenerOptions,
+    ) => undefined,
+};
+const speechRecognition3 = new webkitSpeechRecognition();
+
+const speechRecognition4: SpeechRecognition = {
+    ...speechRecognition2,
+    start: (audioTrack: MediaStreamTrack) => undefined,
+};
+
+const speechRecognitionResultList = new SpeechRecognitionResultList();
+
+const speechRecognitionEventInit: SpeechRecognitionEventInit = {
+    resultIndex: 5,
+    results: speechRecognitionResultList,
+};
+
+const speechRecognitionEvent = new SpeechRecognitionEvent("type", speechRecognitionEventInit);
+const speechRecognitionEvent2 = new webkitSpeechRecognitionEvent("type", speechRecognitionEventInit);
+
+const speechRecognitionErrorEventInit: SpeechRecognitionErrorEventInit = {
+    error: "aborted",
+    message: "abcde",
+};
+const speechRecognitionErrorEvent = new SpeechRecognitionErrorEvent("type", speechRecognitionErrorEventInit);
diff --git a/types/dom-speech-recognition/ts5.9/index.d.ts b/types/dom-speech-recognition/ts5.9/index.d.ts
new file mode 100644
index 00000000000000..f03791e03e43a8
--- /dev/null
+++ b/types/dom-speech-recognition/ts5.9/index.d.ts
@@ -0,0 +1,135 @@
+// https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition#events
+interface SpeechRecognitionEventMap {
+    audioend: Event;
+    audiostart: Event;
+    end: Event;
+    error: SpeechRecognitionErrorEvent;
+    nomatch: SpeechRecognitionEvent;
+    result: SpeechRecognitionEvent;
+    soundend: Event;
+    soundstart: Event;
+    speechend: Event;
+    speechstart: Event;
+    start: Event;
+}
+
+// https://wicg.github.io/speech-api/#speechreco-section
+interface SpeechRecognition extends EventTarget {
+    continuous: boolean;
+    grammars: SpeechGrammarList;
+    interimResults: boolean;
+    lang: string;
+    maxAlternatives: number;
+    onaudioend: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onaudiostart: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onend: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onerror: ((this: SpeechRecognition, ev: SpeechRecognitionErrorEvent) => any) | null;
+    onnomatch: ((this: SpeechRecognition, ev: SpeechRecognitionEvent) => any) | null;
+    onresult: ((this: SpeechRecognition, ev: SpeechRecognitionEvent) => any) | null;
+    onsoundend: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onsoundstart: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onspeechend: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onspeechstart: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onstart: ((this: SpeechRecognition, ev: Event) => any) | null;
+    abort(): void;
+    start(audioTrack?: MediaStreamTrack): void;
+    stop(): void;
+    addEventListener<K extends keyof SpeechRecognitionEventMap>(
+        type: K,
+        listener: (this: SpeechRecognition, ev: SpeechRecognitionEventMap[K]) => any,
+        options?: boolean | AddEventListenerOptions,
+    ): void;
+    addEventListener(
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | AddEventListenerOptions,
+    ): void;
+    removeEventListener<K extends keyof SpeechRecognitionEventMap>(
+        type: K,
+        listener: (this: SpeechRecognition, ev: SpeechRecognitionEventMap[K]) => any,
+        options?: boolean | EventListenerOptions,
+    ): void;
+    removeEventListener(
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | EventListenerOptions,
+    ): void;
+}
+
+declare var SpeechRecognition: { prototype: SpeechRecognition; new(): SpeechRecognition };
+
+// https://wicg.github.io/speech-api/#speechrecognitionevent
+interface SpeechRecognitionEventInit extends EventInit {
+    resultIndex?: number;
+    results: SpeechRecognitionResultList;
+}
+
+// https://wicg.github.io/speech-api/#dictdef-speechrecognitioneventinit
+interface SpeechRecognitionEvent extends Event {
+    readonly resultIndex: number;
+    readonly results: SpeechRecognitionResultList;
+}
+
+declare var SpeechRecognitionEvent: {
+    prototype: SpeechRecognitionEvent;
+    new(type: string, eventInitDict: SpeechRecognitionEventInit): SpeechRecognitionEvent;
+};
+
+// https://wicg.github.io/speech-api/#enumdef-speechrecognitionerrorcode
+type SpeechRecognitionErrorCode =
+    | "aborted"
+    | "audio-capture"
+    | "bad-grammar"
+    | "language-not-supported"
+    | "network"
+    | "no-speech"
+    | "not-allowed"
+    | "service-not-allowed";
+
+// https://wicg.github.io/speech-api/#dictdef-speechrecognitionerroreventinit
+interface SpeechRecognitionErrorEventInit extends EventInit {
+    error: SpeechRecognitionErrorCode;
+    message?: string;
+}
+
+// https://wicg.github.io/speech-api/#speechrecognitionerrorevent
+interface SpeechRecognitionErrorEvent extends Event {
+    readonly error: SpeechRecognitionErrorCode;
+    readonly message: string;
+}
+
+declare var SpeechRecognitionErrorEvent: {
+    prototype: SpeechRecognitionErrorEvent;
+    new(type: string, eventInitDict: SpeechRecognitionErrorEventInit): SpeechRecognitionErrorEvent;
+};
+
+// https://wicg.github.io/speech-api/#speechgrammar
+interface SpeechGrammar {
+    src: string;
+    weight: number;
+}
+
+declare var SpeechGrammar: {
+    prototype: SpeechGrammar;
+    new(): SpeechGrammar;
+};
+
+// https://wicg.github.io/speech-api/#speechgrammarlist
+interface SpeechGrammarList {
+    readonly length: number;
+    addFromString(string: string, weight?: number): void;
+    addFromURI(src: string, weight?: number): void;
+    item(index: number): SpeechGrammar;
+    [index: number]: SpeechGrammar;
+}
+
+declare var SpeechGrammarList: { prototype: SpeechGrammarList; new(): SpeechGrammarList };
+
+// prefixed global variables in Chrome; should match the equivalents above
+// https://developer.mozilla.org/en-US/docs/Web/API/Web_Speech_API/Using_the_Web_Speech_API#chrome_support
+declare var webkitSpeechRecognition: { prototype: SpeechRecognition; new(): SpeechRecognition };
+declare var webkitSpeechGrammarList: { prototype: SpeechGrammarList; new(): SpeechGrammarList };
+declare var webkitSpeechRecognitionEvent: {
+    prototype: SpeechRecognitionEvent;
+    new(type: string, eventInitDict: SpeechRecognitionEventInit): SpeechRecognitionEvent;
+};
diff --git a/types/dom-speech-recognition/ts5.9/tsconfig.json b/types/dom-speech-recognition/ts5.9/tsconfig.json
new file mode 100644
index 00000000000000..0a8da2222dc059
--- /dev/null
+++ b/types/dom-speech-recognition/ts5.9/tsconfig.json
@@ -0,0 +1,20 @@
+{
+    "compilerOptions": {
+        "module": "node16",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "dom-speech-recognition-tests.ts"
+    ]
+}
diff --git a/types/es6-collections/index.d.ts b/types/es6-collections/index.d.ts
index 7073bc1973f1e5..40ed0ec3c1c9d0 100644
--- a/types/es6-collections/index.d.ts
+++ b/types/es6-collections/index.d.ts
@@ -13,10 +13,7 @@ See the Apache Version 2.0 License for specific language governing permissions
 and limitations under the License.
 ***************************************************************************** */
 
-interface IteratorResult<T> {
-    done: boolean;
-    value?: T | undefined;
-}
+/// <reference lib="es2015" />
 
 interface Iterator<T> {
     next(value?: any): IteratorResult<T>;
@@ -38,13 +35,13 @@ interface Map<K, V> {
     entries(): Iterator<[K, V]>;
     keys(): Iterator<K>;
     values(): Iterator<V>;
-    size: number;
+    readonly size: number;
 }
 
 interface MapConstructor {
     new<K, V>(): Map<K, V>;
     new<K, V>(iterable: ForEachable<[K, V]>): Map<K, V>;
-    prototype: Map<any, any>;
+    readonly prototype: Map<any, any>;
 }
 
 declare var Map: MapConstructor;
@@ -58,13 +55,13 @@ interface Set<T> {
     entries(): Iterator<[T, T]>;
     keys(): Iterator<T>;
     values(): Iterator<T>;
-    size: number;
+    readonly size: number;
 }
 
 interface SetConstructor {
     new<T>(): Set<T>;
     new<T>(iterable: ForEachable<T>): Set<T>;
-    prototype: Set<any>;
+    readonly prototype: Set<any>;
 }
 
 declare var Set: SetConstructor;
@@ -80,7 +77,7 @@ interface WeakMap<K extends object, V> {
 interface WeakMapConstructor {
     new<K extends object, V>(): WeakMap<K, V>;
     new<K extends object, V>(iterable: ForEachable<[K, V]>): WeakMap<K, V>;
-    prototype: WeakMap<any, any>;
+    readonly prototype: WeakMap<object, any>;
 }
 
 declare var WeakMap: WeakMapConstructor;
@@ -93,9 +90,9 @@ interface WeakSet<T> {
 }
 
 interface WeakSetConstructor {
-    new<T>(): WeakSet<T>;
-    new<T>(iterable: ForEachable<T>): WeakSet<T>;
-    prototype: WeakSet<any>;
+    new<T extends WeakKey = WeakKey>(): WeakSet<T>;
+    new<T extends WeakKey = WeakKey>(iterable: ForEachable<T>): WeakSet<T>;
+    readonly prototype: WeakSet<object>;
 }
 
 declare var WeakSet: WeakSetConstructor;
diff --git a/types/es6-shim/index.d.ts b/types/es6-shim/index.d.ts
index e4c7ce3d06e36e..6f228f5847814c 100644
--- a/types/es6-shim/index.d.ts
+++ b/types/es6-shim/index.d.ts
@@ -1,7 +1,4 @@
-interface IteratorResult<T> {
-    done: boolean;
-    value?: T | undefined;
-}
+/// <reference lib="es2015" />
 
 interface IterableShim<T> {
     /**
@@ -237,7 +234,7 @@ interface NumberConstructor {
      * that is representable as a Number value, which is approximately:
      * 2.2204460492503130808472633361816 x 10‍−‍16.
      */
-    EPSILON: number;
+    readonly EPSILON: number;
 
     /**
      * Returns true if passed value is finite.
@@ -272,14 +269,14 @@ interface NumberConstructor {
      * a Number value.
      * The value of Number.MIN_SAFE_INTEGER is 9007199254740991 2^53 − 1.
      */
-    MAX_SAFE_INTEGER: number;
+    readonly MAX_SAFE_INTEGER: number;
 
     /**
      * The value of the smallest integer n such that n and n − 1 are both exactly representable as
      * a Number value.
      * The value of Number.MIN_SAFE_INTEGER is −9007199254740991 (−(2^53 − 1)).
      */
-    MIN_SAFE_INTEGER: number;
+    readonly MIN_SAFE_INTEGER: number;
 
     /**
      * Converts a string to a floating-point number.
@@ -335,7 +332,7 @@ interface RegExp {
      *
      * If no flags are set, the value is the empty string.
      */
-    flags: string;
+    readonly flags: string;
 }
 
 interface Math {
@@ -499,7 +496,7 @@ interface PromiseConstructor {
     /**
      * A reference to the prototype.
      */
-    prototype: Promise<any>;
+    readonly prototype: Promise<any>;
 
     /**
      * Creates a new Promise.
@@ -564,7 +561,7 @@ interface Map<K, V> {
     get(key: K): V | undefined;
     has(key: K): boolean;
     set(key: K, value: V): Map<K, V>;
-    size: number;
+    readonly size: number;
     entries(): IterableIteratorShim<[K, V]>;
     keys(): IterableIteratorShim<K>;
     values(): IterableIteratorShim<V>;
@@ -573,7 +570,7 @@ interface Map<K, V> {
 interface MapConstructor {
     new<K, V>(): Map<K, V>;
     new<K, V>(iterable: IterableShim<[K, V]>): Map<K, V>;
-    prototype: Map<any, any>;
+    readonly prototype: Map<any, any>;
 }
 
 declare var Map: MapConstructor;
@@ -584,7 +581,7 @@ interface Set<T> {
     delete(value: T): boolean;
     forEach(callbackfn: (value: T, index: T, set: Set<T>) => void, thisArg?: any): void;
     has(value: T): boolean;
-    size: number;
+    readonly size: number;
     entries(): IterableIteratorShim<[T, T]>;
     keys(): IterableIteratorShim<T>;
     values(): IterableIteratorShim<T>;
@@ -594,7 +591,7 @@ interface Set<T> {
 interface SetConstructor {
     new<T>(): Set<T>;
     new<T>(iterable: IterableShim<T>): Set<T>;
-    prototype: Set<any>;
+    readonly prototype: Set<any>;
 }
 
 declare var Set: SetConstructor;
@@ -609,7 +606,7 @@ interface WeakMap<K extends object, V> {
 interface WeakMapConstructor {
     new<K extends object, V>(): WeakMap<K, V>;
     new<K extends object, V>(iterable: IterableShim<[K, V]>): WeakMap<K, V>;
-    prototype: WeakMap<any, any>;
+    readonly prototype: WeakMap<object, any>;
 }
 
 declare var WeakMap: WeakMapConstructor;
@@ -621,9 +618,9 @@ interface WeakSet<T> {
 }
 
 interface WeakSetConstructor {
-    new<T>(): WeakSet<T>;
-    new<T>(iterable: IterableShim<T>): WeakSet<T>;
-    prototype: WeakSet<any>;
+    new<T extends WeakKey = WeakKey>(): WeakSet<T>;
+    new<T extends WeakKey = WeakKey>(iterable: IterableShim<T>): WeakSet<T>;
+    readonly prototype: WeakSet<object>;
 }
 
 declare var WeakSet: WeakSetConstructor;
diff --git a/types/office-js-preview/index.d.ts b/types/office-js-preview/index.d.ts
index d84c3f4fc9dce7..88ff58e4a342bc 100644
--- a/types/office-js-preview/index.d.ts
+++ b/types/office-js-preview/index.d.ts
@@ -10467,6 +10467,10 @@ declare namespace Office {
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Organizer
+         *
+         * **Important**: To manage the locations of an appointment in Outlook clients that don't support Mailbox requirement set 1.8, use the `location` property instead.
+         * For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         enhancedLocation: EnhancedLocation;
         /**
@@ -10500,9 +10504,15 @@ declare namespace Office {
          *
          * @remarks
          *
+         * [Api set: Mailbox 1.1]
+         *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Organizer
+         *
+         * **Important**: The `enhancedLocation` property was introduced in Mailbox requirement set 1.8. Use the `enhancedLocation` property to better identify and manage
+         * appointment locations, especially if you need to determine the location type. For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         location: Location;
         /**
@@ -12001,6 +12011,10 @@ declare namespace Office {
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Attendee
+         *
+         * **Important**: To manage the locations of an appointment in Outlook clients that don't support Mailbox requirement set 1.8, use the `location` property instead.
+         * For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         enhancedLocation: EnhancedLocation;
         /**
@@ -12069,9 +12083,15 @@ declare namespace Office {
          *
          * @remarks
          *
+         * [Api set: Mailbox 1.1]
+         *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Attendee
+         *
+         * **Important**: The `enhancedLocation` property was introduced in Mailbox requirement set 1.8. Use the `enhancedLocation` property to better identify and manage
+         * appointment locations, especially if you need to determine the location type. For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         location: string;
         /**
@@ -14832,6 +14852,10 @@ declare namespace Office {
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
      *
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose or Read
+     *
+     * **Important**: To manage the locations of an appointment in Outlook clients that don't support Mailbox requirement set 1.8, use the Office.Location API instead.
+     * For guidance on selecting the right location API for your scenario, see
+     * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
      */
     export interface EnhancedLocation {
         /**
@@ -14876,9 +14900,6 @@ declare namespace Office {
         addAsync(locationIdentifiers: LocationIdentifier[], callback?: (asyncResult: Office.AsyncResult<void>) => void): void;
         /**
          * Gets the set of locations associated with the appointment.
-         * 
-         * **Note**: {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | Personal contact groups}
-         * added as appointment locations aren't returned by this method.
          *
          * @remarks
          * [Api set: Mailbox 1.8]
@@ -14887,18 +14908,23 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose or Read
          *
+         * **Important**:
+         *
+         * - The `getAsync` method doesn't return {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | personal contact groups} that
+         * were added to the **Location** field of an appointment.
+         *
+         * - If a location was added using `Office.context.mailbox.item.location.setAsync`, its location type is `Office.MailboxEnums.LocationType.Custom`.
+         *
          * @param options An object literal that contains one or more of the following properties:-
          *        `asyncContext`: Developers can provide any object they wish to access in the callback function.
          * @param callback Optional. When the method completes, the function passed in the `callback` parameter is called with a single parameter,
-         *                `asyncResult`, which is an `Office.AsyncResult` object.
+         *        `asyncResult`, which is an `Office.AsyncResult` object. An array of `Office.LocationDetails` objects representing the locations of the
+         *        appointment is returned in the `asyncResult.value` property.
          */
         getAsync(options: Office.AsyncContextOptions, callback?: (asyncResult: Office.AsyncResult<LocationDetails[]>) => void): void;
         /**
          * Gets the set of locations associated with the appointment.
          *
-         * **Note**: {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | Personal contact groups}
-         * added as appointment locations aren't returned by this method.
-         * 
          * @remarks
          * [Api set: Mailbox 1.8]
          *
@@ -14906,8 +14932,16 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose or Read
          *
+         * **Important**:
+         *
+         * - The `getAsync` method doesn't return {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | personal contact groups} that
+         * were added to the **Location** field of an appointment.
+         *
+         * - If a location was added using `Office.context.mailbox.item.location.setAsync`, its location type is `Office.MailboxEnums.LocationType.Custom`.
+         *
          * @param callback Optional. When the method completes, the function passed in the `callback` parameter is called with a single parameter,
-         *                `asyncResult`, which is an `Office.AsyncResult` object.
+         *        `asyncResult`, which is an `Office.AsyncResult` object. An array of `Office.LocationDetails` objects representing the locations of the
+         *        appointment is returned in the `asyncResult.value` property.
          */
         getAsync(callback?: (asyncResult: Office.AsyncResult<LocationDetails[]>) => void): void;
         /**
@@ -17380,6 +17414,10 @@ declare namespace Office {
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
      *
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose
+     *
+     * **Important**: The Office.EnhancedLocation API was introduced in Mailbox requirement set 1.8. Use the EnhancedLocation API to better identify and manage
+     * appointment locations, especially if you need to determine the location type. For guidance on selecting the right location API for your scenario, see
+     * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
      */
     interface Location {
         /**
@@ -17431,6 +17469,9 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose
          *
+         * **Important**: To ensure that multiple locations resolve correctly in Outlook, separate them with a semicolon and a space. For example,
+         * "Conference Room 1; Conference Room 2".
+         *
          * **Errors**:
          *
          * - DataExceedsMaximumSize: The location parameter is longer than 255 characters.
@@ -17455,6 +17496,9 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose
          *
+         * **Important**: To ensure that multiple locations resolve correctly in Outlook, separate them with a semicolon and a space. For example,
+         * "Conference Room 1; Conference Room 2".
+         *
          * **Errors**:
          *
          * - DataExceedsMaximumSize: The location parameter is longer than 255 characters.
diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index b021509258ef97..677cb07ba4e9e5 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -10457,6 +10457,10 @@ declare namespace Office {
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Organizer
+         *
+         * **Important**: To manage the locations of an appointment in Outlook clients that don't support Mailbox requirement set 1.8, use the `location` property instead.
+         * For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         enhancedLocation: EnhancedLocation;
         /**
@@ -10477,9 +10481,15 @@ declare namespace Office {
          *
          * @remarks
          *
+         * [Api set: Mailbox 1.1]
+         *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Organizer
+         *
+         * **Important**: The `enhancedLocation` property was introduced in Mailbox requirement set 1.8. Use the `enhancedLocation` property to better identify and manage
+         * appointment locations, especially if you need to determine the location type. For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         location: Location;
         /**
@@ -11982,6 +11992,10 @@ declare namespace Office {
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Attendee
+         *
+         * **Important**: To manage the locations of an appointment in Outlook clients that don't support Mailbox requirement set 1.8, use the `location` property instead.
+         * For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         enhancedLocation: EnhancedLocation;
         /**
@@ -12037,9 +12051,15 @@ declare namespace Office {
          *
          * @remarks
          *
+         * [Api set: Mailbox 1.1]
+         *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Appointment Attendee
+         *
+         * **Important**: The `enhancedLocation` property was introduced in Mailbox requirement set 1.8. Use the `enhancedLocation` property to better identify and manage
+         * appointment locations, especially if you need to determine the location type. For guidance on selecting the right location API for your scenario, see
+         * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
          */
         location: string;
         /**
@@ -14612,6 +14632,10 @@ declare namespace Office {
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
      *
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose or Read
+     *
+     * **Important**: To manage the locations of an appointment in Outlook clients that don't support Mailbox requirement set 1.8, use the Office.Location API instead.
+     * For guidance on selecting the right location API for your scenario, see
+     * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
      */
     export interface EnhancedLocation {
         /**
@@ -14657,9 +14681,6 @@ declare namespace Office {
         /**
          * Gets the set of locations associated with the appointment.
          *
-         * **Note**: {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | Personal contact groups}
-         * added as appointment locations aren't returned by this method.
-         *
          * @remarks
          * [Api set: Mailbox 1.8]
          *
@@ -14667,18 +14688,23 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose or Read
          *
+         * **Important**:
+         *
+         * - The `getAsync` method doesn't return {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | personal contact groups} that
+         * were added to the **Location** field of an appointment.
+         *
+         * - If a location was added using `Office.context.mailbox.item.location.setAsync`, its location type is `Office.MailboxEnums.LocationType.Custom`.
+         *
          * @param options An object literal that contains one or more of the following properties:-
          *        `asyncContext`: Developers can provide any object they wish to access in the callback function.
          * @param callback Optional. When the method completes, the function passed in the `callback` parameter is called with a single parameter,
-         *                `asyncResult`, which is an `Office.AsyncResult` object.
+         *        `asyncResult`, which is an `Office.AsyncResult` object. An array of `Office.LocationDetails` objects representing the locations of the
+         *        appointment is returned in the `asyncResult.value` property.
          */
         getAsync(options: Office.AsyncContextOptions, callback?: (asyncResult: Office.AsyncResult<LocationDetails[]>) => void): void;
         /**
          * Gets the set of locations associated with the appointment.
          *
-         * **Note**: {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | Personal contact groups}
-         * added as appointment locations aren't returned by this method.
-         *
          * @remarks
          * [Api set: Mailbox 1.8]
          *
@@ -14686,8 +14712,16 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose or Read
          *
+         * **Important**:
+         *
+         * - The `getAsync` method doesn't return {@link https://support.microsoft.com/office/88ff6c60-0a1d-4b54-8c9d-9e1a71bc3023 | personal contact groups} that
+         * were added to the **Location** field of an appointment.
+         *
+         * - If a location was added using `Office.context.mailbox.item.location.setAsync`, its location type is `Office.MailboxEnums.LocationType.Custom`.
+         *
          * @param callback Optional. When the method completes, the function passed in the `callback` parameter is called with a single parameter,
-         *                `asyncResult`, which is an `Office.AsyncResult` object.
+         *        `asyncResult`, which is an `Office.AsyncResult` object. An array of `Office.LocationDetails` objects representing the locations of the
+         *        appointment is returned in the `asyncResult.value` property.
          */
         getAsync(callback?: (asyncResult: Office.AsyncResult<LocationDetails[]>) => void): void;
         /**
@@ -17125,6 +17159,10 @@ declare namespace Office {
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/understanding-outlook-add-in-permissions | Minimum permission level}**: **read item**
      *
      * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose
+     *
+     * **Important**: The Office.EnhancedLocation API was introduced in Mailbox requirement set 1.8. Use the EnhancedLocation API to better identify and manage
+     * appointment locations, especially if you need to determine the location type. For guidance on selecting the right location API for your scenario, see
+     * {@link https://learn.microsoft.com/office/dev/add-ins/outlook/get-or-set-the-location-of-an-appointment | Get or set the location when composing an appointmnt in Outlook}.
      */
     interface Location {
         /**
@@ -17176,6 +17214,9 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose
          *
+         * **Important**: To ensure that multiple locations resolve correctly in Outlook, separate them with a semicolon and a space. For example,
+         * "Conference Room 1; Conference Room 2".
+         *
          * **Errors**:
          *
          * - DataExceedsMaximumSize: The location parameter is longer than 255 characters.
@@ -17200,6 +17241,9 @@ declare namespace Office {
          *
          * **{@link https://learn.microsoft.com/office/dev/add-ins/outlook/outlook-add-ins-overview#extension-points | Applicable Outlook mode}**: Compose
          *
+         * **Important**: To ensure that multiple locations resolve correctly in Outlook, separate them with a semicolon and a space. For example,
+         * "Conference Room 1; Conference Room 2".
+         *
          * **Errors**:
          *
          * - DataExceedsMaximumSize: The location parameter is longer than 255 characters.
diff --git a/types/send/.npmignore b/types/send/.npmignore
index 93e307400a5456..49916246872b73 100644
--- a/types/send/.npmignore
+++ b/types/send/.npmignore
@@ -3,3 +3,4 @@
 !**/*.d.cts
 !**/*.d.mts
 !**/*.d.*.ts
+/v0/
diff --git a/types/send/index.d.ts b/types/send/index.d.ts
index 6d624bb61b8cad..5d483dc8103ef2 100644
--- a/types/send/index.d.ts
+++ b/types/send/index.d.ts
@@ -1,7 +1,6 @@
 /// <reference types="node" />
 
 import * as fs from "fs";
-import * as m from "mime";
 import * as stream from "stream";
 
 /**
@@ -11,7 +10,6 @@ import * as stream from "stream";
 declare function send(req: stream.Readable, path: string, options?: send.SendOptions): send.SendStream;
 
 declare namespace send {
-    const mime: typeof m;
     interface SendOptions {
         /**
          * Enable or disable accepting ranged requests, defaults to true.
@@ -94,42 +92,6 @@ declare namespace send {
     }
 
     interface SendStream extends stream.Stream {
-        /**
-         * @deprecated pass etag as option
-         * Enable or disable etag generation.
-         */
-        etag(val: boolean): SendStream;
-
-        /**
-         * @deprecated use dotfiles option
-         * Enable or disable "hidden" (dot) files.
-         */
-        hidden(val: boolean): SendStream;
-
-        /**
-         * @deprecated pass index as option
-         * Set index `paths`, set to a falsy value to disable index support.
-         */
-        index(paths: string[] | string): SendStream;
-
-        /**
-         * @deprecated pass root as option
-         * Set root `path`.
-         */
-        root(paths: string): SendStream;
-
-        /**
-         * @deprecated pass root as option
-         * Set root `path`.
-         */
-        from(paths: string): SendStream;
-
-        /**
-         * @deprecated pass maxAge as option
-         * Set max-age to `maxAge`.
-         */
-        maxage(maxAge: string | number): SendStream;
-
         /**
          * Emit error with `status`.
          */
diff --git a/types/send/package.json b/types/send/package.json
index 25850eaecb1600..baf0074c7d45d9 100644
--- a/types/send/package.json
+++ b/types/send/package.json
@@ -1,12 +1,11 @@
 {
     "private": true,
     "name": "@types/send",
-    "version": "0.17.9999",
+    "version": "1.2.9999",
     "projects": [
         "https://github.com/pillarjs/send"
     ],
     "dependencies": {
-        "@types/mime": "^1",
         "@types/node": "*"
     },
     "devDependencies": {
diff --git a/types/send/send-tests.ts b/types/send/send-tests.ts
index 13162a9fad6d59..3fe0d29823e864 100644
--- a/types/send/send-tests.ts
+++ b/types/send/send-tests.ts
@@ -3,10 +3,6 @@ import send = require("send");
 
 const app = express();
 
-send.mime.define({
-    "application/x-my-type": ["x-mt", "x-mtt"],
-});
-
 app.get("/test.html", (req, res) => {
     send(req, "/test.html", {
         immutable: true,
@@ -17,8 +13,6 @@ app.get("/test.html", (req, res) => {
 
 app.get("/test.html", (req, res) => {
     send(req, "/test.html")
-        .maxage(0)
-        .root(__dirname + "/wwwroot")
         .on("error", (err: any) => {
             res.statusCode = err.status || 500;
             res.end(err.message);
diff --git a/types/dhtmlxscheduler/.npmignore b/types/send/v0/.npmignore
similarity index 100%
rename from types/dhtmlxscheduler/.npmignore
rename to types/send/v0/.npmignore
diff --git a/types/send/v0/index.d.ts b/types/send/v0/index.d.ts
new file mode 100644
index 00000000000000..6d624bb61b8cad
--- /dev/null
+++ b/types/send/v0/index.d.ts
@@ -0,0 +1,225 @@
+/// <reference types="node" />
+
+import * as fs from "fs";
+import * as m from "mime";
+import * as stream from "stream";
+
+/**
+ * Create a new SendStream for the given path to send to a res.
+ * The req is the Node.js HTTP request and the path is a urlencoded path to send (urlencoded, not the actual file-system path).
+ */
+declare function send(req: stream.Readable, path: string, options?: send.SendOptions): send.SendStream;
+
+declare namespace send {
+    const mime: typeof m;
+    interface SendOptions {
+        /**
+         * Enable or disable accepting ranged requests, defaults to true.
+         * Disabling this will not send Accept-Ranges and ignore the contents of the Range request header.
+         */
+        acceptRanges?: boolean | undefined;
+
+        /**
+         * Enable or disable setting Cache-Control response header, defaults to true.
+         * Disabling this will ignore the maxAge option.
+         */
+        cacheControl?: boolean | undefined;
+
+        /**
+         * Set how "dotfiles" are treated when encountered.
+         * A dotfile is a file or directory that begins with a dot (".").
+         * Note this check is done on the path itself without checking if the path actually exists on the disk.
+         * If root is specified, only the dotfiles above the root are checked (i.e. the root itself can be within a dotfile when when set to "deny").
+         * 'allow' No special treatment for dotfiles.
+         * 'deny' Send a 403 for any request for a dotfile.
+         * 'ignore' Pretend like the dotfile does not exist and 404.
+         * The default value is similar to 'ignore', with the exception that this default will not ignore the files within a directory that begins with a dot, for backward-compatibility.
+         */
+        dotfiles?: "allow" | "deny" | "ignore" | undefined;
+
+        /**
+         * Byte offset at which the stream ends, defaults to the length of the file minus 1.
+         * The end is inclusive in the stream, meaning end: 3 will include the 4th byte in the stream.
+         */
+        end?: number | undefined;
+
+        /**
+         * Enable or disable etag generation, defaults to true.
+         */
+        etag?: boolean | undefined;
+
+        /**
+         * If a given file doesn't exist, try appending one of the given extensions, in the given order.
+         * By default, this is disabled (set to false).
+         * An example value that will serve extension-less HTML files: ['html', 'htm'].
+         * This is skipped if the requested file already has an extension.
+         */
+        extensions?: string[] | string | boolean | undefined;
+
+        /**
+         * Enable or disable the immutable directive in the Cache-Control response header, defaults to false.
+         * If set to true, the maxAge option should also be specified to enable caching.
+         * The immutable directive will prevent supported clients from making conditional requests during the life of the maxAge option to check if the file has changed.
+         * @default false
+         */
+        immutable?: boolean | undefined;
+
+        /**
+         * By default send supports "index.html" files, to disable this set false or to supply a new index pass a string or an array in preferred order.
+         */
+        index?: string[] | string | boolean | undefined;
+
+        /**
+         * Enable or disable Last-Modified header, defaults to true.
+         * Uses the file system's last modified value.
+         */
+        lastModified?: boolean | undefined;
+
+        /**
+         * Provide a max-age in milliseconds for http caching, defaults to 0.
+         * This can also be a string accepted by the ms module.
+         */
+        maxAge?: string | number | undefined;
+
+        /**
+         * Serve files relative to path.
+         */
+        root?: string | undefined;
+
+        /**
+         * Byte offset at which the stream starts, defaults to 0.
+         * The start is inclusive, meaning start: 2 will include the 3rd byte in the stream.
+         */
+        start?: number | undefined;
+    }
+
+    interface SendStream extends stream.Stream {
+        /**
+         * @deprecated pass etag as option
+         * Enable or disable etag generation.
+         */
+        etag(val: boolean): SendStream;
+
+        /**
+         * @deprecated use dotfiles option
+         * Enable or disable "hidden" (dot) files.
+         */
+        hidden(val: boolean): SendStream;
+
+        /**
+         * @deprecated pass index as option
+         * Set index `paths`, set to a falsy value to disable index support.
+         */
+        index(paths: string[] | string): SendStream;
+
+        /**
+         * @deprecated pass root as option
+         * Set root `path`.
+         */
+        root(paths: string): SendStream;
+
+        /**
+         * @deprecated pass root as option
+         * Set root `path`.
+         */
+        from(paths: string): SendStream;
+
+        /**
+         * @deprecated pass maxAge as option
+         * Set max-age to `maxAge`.
+         */
+        maxage(maxAge: string | number): SendStream;
+
+        /**
+         * Emit error with `status`.
+         */
+        error(status: number, error?: Error): void;
+
+        /**
+         * Check if the pathname ends with "/".
+         */
+        hasTrailingSlash(): boolean;
+
+        /**
+         * Check if this is a conditional GET request.
+         */
+        isConditionalGET(): boolean;
+
+        /**
+         * Strip content-* header fields.
+         */
+        removeContentHeaderFields(): void;
+
+        /**
+         * Respond with 304 not modified.
+         */
+        notModified(): void;
+
+        /**
+         * Raise error that headers already sent.
+         */
+        headersAlreadySent(): void;
+
+        /**
+         * Check if the request is cacheable, aka responded with 2xx or 304 (see RFC 2616 section 14.2{5,6}).
+         */
+        isCachable(): boolean;
+
+        /**
+         * Handle stat() error.
+         */
+        onStatError(error: Error): void;
+
+        /**
+         * Check if the cache is fresh.
+         */
+        isFresh(): boolean;
+
+        /**
+         * Check if the range is fresh.
+         */
+        isRangeFresh(): boolean;
+
+        /**
+         * Redirect to path.
+         */
+        redirect(path: string): void;
+
+        /**
+         * Pipe to `res`.
+         */
+        pipe<T extends NodeJS.WritableStream>(res: T): T;
+
+        /**
+         * Transfer `path`.
+         */
+        send(path: string, stat?: fs.Stats): void;
+
+        /**
+         * Transfer file for `path`.
+         */
+        sendFile(path: string): void;
+
+        /**
+         * Transfer index for `path`.
+         */
+        sendIndex(path: string): void;
+
+        /**
+         * Transfer index for `path`.
+         */
+        stream(path: string, options?: {}): void;
+
+        /**
+         * Set content-type based on `path` if it hasn't been explicitly set.
+         */
+        type(path: string): void;
+
+        /**
+         * Set response header fields, most fields may be pre-defined.
+         */
+        setHeader(path: string, stat: fs.Stats): void;
+    }
+}
+
+export = send;
diff --git a/types/send/v0/package.json b/types/send/v0/package.json
new file mode 100644
index 00000000000000..25850eaecb1600
--- /dev/null
+++ b/types/send/v0/package.json
@@ -0,0 +1,30 @@
+{
+    "private": true,
+    "name": "@types/send",
+    "version": "0.17.9999",
+    "projects": [
+        "https://github.com/pillarjs/send"
+    ],
+    "dependencies": {
+        "@types/mime": "^1",
+        "@types/node": "*"
+    },
+    "devDependencies": {
+        "@types/express": "*",
+        "@types/send": "workspace:."
+    },
+    "owners": [
+        {
+            "name": "Mike Jerred",
+            "githubUsername": "MikeJerred"
+        },
+        {
+            "name": "Piotr Błażejewicz",
+            "githubUsername": "peterblazejewicz"
+        },
+        {
+            "name": "Sebastian Beltran",
+            "githubUsername": "bjohansebas"
+        }
+    ]
+}
diff --git a/types/send/v0/send-tests.ts b/types/send/v0/send-tests.ts
new file mode 100644
index 00000000000000..13162a9fad6d59
--- /dev/null
+++ b/types/send/v0/send-tests.ts
@@ -0,0 +1,35 @@
+import express = require("express");
+import send = require("send");
+
+const app = express();
+
+send.mime.define({
+    "application/x-my-type": ["x-mt", "x-mtt"],
+});
+
+app.get("/test.html", (req, res) => {
+    send(req, "/test.html", {
+        immutable: true,
+        maxAge: 0,
+        root: __dirname + "/wwwroot",
+    }).pipe(res);
+});
+
+app.get("/test.html", (req, res) => {
+    send(req, "/test.html")
+        .maxage(0)
+        .root(__dirname + "/wwwroot")
+        .on("error", (err: any) => {
+            res.statusCode = err.status || 500;
+            res.end(err.message);
+        })
+        .on("directory", () => {
+            res.statusCode = 301;
+            res.setHeader("Location", req.url + "/");
+            res.end(`Redirecting to ${req.url}/`);
+        })
+        .on("headers", (res: any, path: string, stat: any) => {
+            res.setHeader("Content-Disposition", "attachment");
+        })
+        .pipe(res);
+});
diff --git a/types/send/v0/tsconfig.json b/types/send/v0/tsconfig.json
new file mode 100644
index 00000000000000..accf6586ca5ce4
--- /dev/null
+++ b/types/send/v0/tsconfig.json
@@ -0,0 +1,19 @@
+{
+    "compilerOptions": {
+        "module": "node16",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "send-tests.ts"
+    ]
+}
diff --git a/types/serve-static/package.json b/types/serve-static/package.json
index 6d001c779fcee6..da54a89a94a824 100644
--- a/types/serve-static/package.json
+++ b/types/serve-static/package.json
@@ -8,7 +8,7 @@
     "dependencies": {
         "@types/http-errors": "*",
         "@types/node": "*",
-        "@types/send": "*"
+        "@types/send": "<1"
     },
     "devDependencies": {
         "@types/express": "*",
diff --git a/types/webrtc/MediaStream.d.ts b/types/webrtc/MediaStream.d.ts
index dafc7f5af94ee1..7b0ec440cf16de 100644
--- a/types/webrtc/MediaStream.d.ts
+++ b/types/webrtc/MediaStream.d.ts
@@ -21,6 +21,11 @@ interface ConstrainStringParameters {
     ideal?: string | string[] | undefined;
 }
 
+interface ConstrainBooleanOrDOMStringParameters {
+    exact?: boolean | string;
+    ideal?: boolean | string;
+}
+
 interface MediaStreamConstraints {
     video?: boolean | MediaTrackConstraints | undefined;
     audio?: boolean | MediaTrackConstraints | undefined;
@@ -34,6 +39,7 @@ declare namespace W3C {
     type ConstrainLong = ConstrainNumber;
     type ConstrainDouble = ConstrainNumber;
     type ConstrainString = string | string[] | ConstrainStringParameters;
+    type ConstrainBooleanOrDOMString = boolean | string | ConstrainBooleanOrDOMStringParameters;
 }
 
 interface MediaTrackConstraints extends MediaTrackConstraintSet {
@@ -49,7 +55,7 @@ interface MediaTrackConstraintSet {
     volume?: W3C.ConstrainDouble | undefined;
     sampleRate?: W3C.ConstrainLong | undefined;
     sampleSize?: W3C.ConstrainLong | undefined;
-    echoCancellation?: W3C.ConstrainBoolean | undefined;
+    echoCancellation?: W3C.ConstrainBooleanOrDOMString | undefined;
     latency?: W3C.ConstrainDouble | undefined;
     deviceId?: W3C.ConstrainString | undefined;
     groupId?: W3C.ConstrainString | undefined;
diff --git a/types/webrtc/package.json b/types/webrtc/package.json
index cff9526b2eb11e..7e70ea8d97b48c 100644
--- a/types/webrtc/package.json
+++ b/types/webrtc/package.json
@@ -8,6 +8,11 @@
     "types": "index",
     "minimumTypeScriptVersion": "4.9",
     "typesVersions": {
+        "<=5.9": {
+            "*": [
+                "ts5.9/*"
+            ]
+        },
         "<=5.7": {
             "*": [
                 "ts5.7/*"
diff --git a/types/webrtc/ts5.9/MediaStream.d.ts b/types/webrtc/ts5.9/MediaStream.d.ts
new file mode 100644
index 00000000000000..dafc7f5af94ee1
--- /dev/null
+++ b/types/webrtc/ts5.9/MediaStream.d.ts
@@ -0,0 +1,194 @@
+// Taken from http://dev.w3.org/2011/webrtc/editor/getusermedia.html
+// version: W3C Editor's Draft 29 June 2015
+
+interface ConstrainBooleanParameters {
+    exact?: boolean | undefined;
+    ideal?: boolean | undefined;
+}
+
+interface NumberRange {
+    max?: number | undefined;
+    min?: number | undefined;
+}
+
+interface ConstrainNumberRange extends NumberRange {
+    exact?: number | undefined;
+    ideal?: number | undefined;
+}
+
+interface ConstrainStringParameters {
+    exact?: string | string[] | undefined;
+    ideal?: string | string[] | undefined;
+}
+
+interface MediaStreamConstraints {
+    video?: boolean | MediaTrackConstraints | undefined;
+    audio?: boolean | MediaTrackConstraints | undefined;
+}
+
+declare namespace W3C {
+    type LongRange = NumberRange;
+    type DoubleRange = NumberRange;
+    type ConstrainBoolean = boolean | ConstrainBooleanParameters;
+    type ConstrainNumber = number | ConstrainNumberRange;
+    type ConstrainLong = ConstrainNumber;
+    type ConstrainDouble = ConstrainNumber;
+    type ConstrainString = string | string[] | ConstrainStringParameters;
+}
+
+interface MediaTrackConstraints extends MediaTrackConstraintSet {
+    advanced?: MediaTrackConstraintSet[] | undefined;
+}
+
+interface MediaTrackConstraintSet {
+    width?: W3C.ConstrainLong | undefined;
+    height?: W3C.ConstrainLong | undefined;
+    aspectRatio?: W3C.ConstrainDouble | undefined;
+    frameRate?: W3C.ConstrainDouble | undefined;
+    facingMode?: W3C.ConstrainString | undefined;
+    volume?: W3C.ConstrainDouble | undefined;
+    sampleRate?: W3C.ConstrainLong | undefined;
+    sampleSize?: W3C.ConstrainLong | undefined;
+    echoCancellation?: W3C.ConstrainBoolean | undefined;
+    latency?: W3C.ConstrainDouble | undefined;
+    deviceId?: W3C.ConstrainString | undefined;
+    groupId?: W3C.ConstrainString | undefined;
+}
+
+interface MediaTrackSupportedConstraints {
+    width?: boolean | undefined;
+    height?: boolean | undefined;
+    aspectRatio?: boolean | undefined;
+    frameRate?: boolean | undefined;
+    facingMode?: boolean | undefined;
+    volume?: boolean | undefined;
+    sampleRate?: boolean | undefined;
+    sampleSize?: boolean | undefined;
+    echoCancellation?: boolean | undefined;
+    latency?: boolean | undefined;
+    deviceId?: boolean | undefined;
+    groupId?: boolean | undefined;
+}
+
+interface MediaStream extends EventTarget {
+    // id: string;
+    // active: boolean;
+
+    // onactive: EventListener;
+    // oninactive: EventListener;
+    // onaddtrack: (event: MediaStreamTrackEvent) => any;
+    // onremovetrack: (event: MediaStreamTrackEvent) => any;
+
+    clone(): MediaStream;
+    stop(): void;
+
+    getAudioTracks(): MediaStreamTrack[];
+    getVideoTracks(): MediaStreamTrack[];
+    getTracks(): MediaStreamTrack[];
+
+    getTrackById(trackId: string): MediaStreamTrack;
+
+    addTrack(track: MediaStreamTrack): void;
+    removeTrack(track: MediaStreamTrack): void;
+}
+
+interface MediaStreamTrackEvent extends Event {
+    // track: MediaStreamTrack;
+}
+
+interface MediaStreamTrack extends EventTarget {
+    // id: string;
+    // kind: string;
+    // label: string;
+    enabled: boolean;
+    // muted: boolean;
+    // remote: boolean;
+    // readyState: MediaStreamTrackState;
+
+    // onmute: EventListener;
+    // onunmute: EventListener;
+    // onended: EventListener;
+    // onoverconstrained: EventListener;
+
+    clone(): MediaStreamTrack;
+
+    stop(): void;
+
+    getCapabilities(): MediaTrackCapabilities;
+    getConstraints(): MediaTrackConstraints;
+    getSettings(): MediaTrackSettings;
+    applyConstraints(constraints: MediaTrackConstraints): Promise<void>;
+}
+
+interface MediaTrackCapabilities {
+    // width: number | W3C.LongRange;
+    // height: number | W3C.LongRange;
+    // aspectRatio: number | W3C.DoubleRange;
+    // frameRate: number | W3C.DoubleRange;
+    // facingMode: string;
+    // volume: number | W3C.DoubleRange;
+    // sampleRate: number | W3C.LongRange;
+    // sampleSize: number | W3C.LongRange;
+    // echoCancellation: boolean[];
+    latency?: W3C.DoubleRange | undefined;
+    // deviceId: string;
+    // groupId: string;
+}
+
+interface MediaTrackSettings {
+    // width: number;
+    // height: number;
+    // aspectRatio: number;
+    // frameRate: number;
+    // facingMode: string;
+    // volume: number;
+    // sampleRate: number;
+    // sampleSize: number;
+    // echoCancellation: boolean;
+    latency?: number | undefined;
+    // deviceId: string;
+    // groupId: string;
+}
+
+interface MediaStreamError {
+    readonly name: string;
+    readonly message: string | null;
+    readonly constraintName: string | null;
+}
+
+interface NavigatorGetUserMedia {
+    (
+        constraints: MediaStreamConstraints,
+        successCallback: (stream: MediaStream) => void,
+        errorCallback: (error: MediaStreamError) => void,
+    ): void;
+}
+
+// to use with adapter.js, see: https://github.com/webrtc/adapter
+declare var getUserMedia: NavigatorGetUserMedia;
+
+interface Navigator {
+    getUserMedia: NavigatorGetUserMedia;
+
+    webkitGetUserMedia: NavigatorGetUserMedia;
+
+    mozGetUserMedia: NavigatorGetUserMedia;
+
+    msGetUserMedia: NavigatorGetUserMedia;
+
+    readonly mediaDevices: MediaDevices;
+}
+
+interface MediaDevices {
+    getSupportedConstraints(): MediaTrackSupportedConstraints;
+
+    getUserMedia(constraints: MediaStreamConstraints): Promise<MediaStream>;
+    enumerateDevices(): Promise<MediaDeviceInfo[]>;
+}
+
+interface MediaDeviceInfo {
+    // label: string;
+    // deviceId: string;
+    // kind: string;
+    // groupId: string;
+}
diff --git a/types/webrtc/ts5.9/RTCPeerConnection.d.ts b/types/webrtc/ts5.9/RTCPeerConnection.d.ts
new file mode 100644
index 00000000000000..5da133e2152211
--- /dev/null
+++ b/types/webrtc/ts5.9/RTCPeerConnection.d.ts
@@ -0,0 +1,455 @@
+// W3 Spec: https://www.w3.org/TR/webrtc/
+//
+// Note: Commented out definitions clash with definitions in lib.es6.d.ts. I
+// still kept them in here though, as sometimes they're more specific than the
+// ES6 library ones.
+
+/// <reference path='MediaStream.d.ts' />
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcerror
+interface RTCError extends DOMException {
+    readonly errorDetail: RTCErrorDetailType;
+    readonly httpRequestStatusCode: number | null;
+    readonly receivedAlert: number | null;
+    readonly sctpCauseCode: number | null;
+    readonly sdpLineNumber: number | null;
+    readonly sentAlert: number | null;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcerrorinit
+interface RTCErrorInit {
+    errorDetail: RTCErrorDetailType;
+    httpRequestStatusCode?: number | undefined;
+    receivedAlert?: number | undefined;
+    sctpCauseCode?: number | undefined;
+    sdpLineNumber?: number | undefined;
+    sentAlert?: number | undefined;
+}
+
+declare var RTCError: {
+    prototype: RTCError;
+    new(init: RTCErrorInit, message?: string): RTCError;
+};
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcerrorevent
+interface RTCErrorEvent extends Event {
+    readonly error: RTCError;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcerroreventinit
+interface RTCErrorEventInit extends EventInit {
+    error: RTCError;
+}
+
+declare var RTCErrorEvent: {
+    prototype: RTCErrorEvent;
+    new(type: string, eventInitDict: RTCErrorEventInit): RTCErrorEvent;
+};
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcicecandidatepair
+interface RTCIceCandidatePair {
+    local: RTCIceCandidate;
+    remote: RTCIceCandidate;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcofferansweroptions
+interface RTCOfferAnswerOptions {
+    voiceActivityDetection?: boolean | undefined; // default = true
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcofferoptions
+interface RTCOfferOptions extends RTCOfferAnswerOptions {
+    iceRestart?: boolean | undefined; // default = false
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcansweroptions
+interface RTCAnswerOptions extends RTCOfferAnswerOptions {
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtciceserver
+interface RTCIceServer {
+    credential?: string | undefined;
+    urls: string | string[];
+    username?: string | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtciceparameters
+interface RTCIceParameters {
+    iceLite?: boolean | undefined;
+    password?: string | undefined;
+    usernameFragment?: string | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcicerole
+// type RTCIceRole = "controlled" | "controlling" | "unknown";
+
+interface RTCIceTransportEventMap {
+    "gatheringstatechange": Event;
+    "selectedcandidatepairchange": Event;
+    "statechange": Event;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcicetransport
+type IceTransportEventHandler = ((this: RTCIceTransport, ev: Event) => any) | null;
+interface RTCIceTransport extends EventTarget {
+    readonly role: RTCIceRole;
+    // readonly component: RTCIceComponent;
+    // readonly state: RTCIceTransportState;
+    readonly gatheringState: RTCIceGatheringState;
+    getLocalCandidates(): RTCIceCandidate[];
+    getRemoteCandidates(): RTCIceCandidate[];
+    getLocalParameters(): RTCIceParameters | null;
+    getRemoteParameters(): RTCIceParameters | null;
+    getSelectedCandidatePair(): RTCIceCandidatePair | null;
+    onstatechange: IceTransportEventHandler;
+    ongatheringstatechange: IceTransportEventHandler;
+    onselectedcandidatepairchange: IceTransportEventHandler;
+    addEventListener<K extends keyof RTCIceTransportEventMap>(
+        type: K,
+        listener: (this: RTCIceTransport, ev: RTCIceTransportEventMap[K]) => any,
+        options?: boolean | AddEventListenerOptions,
+    ): void;
+    addEventListener(
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | AddEventListenerOptions,
+    ): void;
+    removeEventListener<K extends keyof RTCIceTransportEventMap>(
+        type: K,
+        listener: (this: RTCIceTransport, ev: RTCIceTransportEventMap[K]) => any,
+        options: boolean | EventListenerOptions,
+    ): void;
+    removeEventListener(
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | EventListenerOptions,
+    ): void;
+}
+
+interface RTCDtlsTransportEventMap {
+    "error": RTCErrorEvent;
+    "statechange": Event;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcdtlstransport
+type DtlsTransportEventHandler<E extends Event> = ((this: RTCDtlsTransport, ev: E) => any) | null;
+interface RTCDtlsTransport extends EventTarget {
+    readonly iceTransport: RTCIceTransport;
+    readonly state: RTCDtlsTransportState;
+    getRemoteCertificates(): ArrayBuffer[];
+    onerror: DtlsTransportEventHandler<RTCErrorEvent>;
+    onstatechange: DtlsTransportEventHandler<Event>;
+    addEventListener<K extends keyof RTCDtlsTransportEventMap>(
+        type: K,
+        listener: (this: RTCDtlsTransport, ev: RTCDtlsTransportEventMap[K]) => any,
+        options?: boolean | AddEventListenerOptions,
+    ): void;
+    addEventListener(
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | AddEventListenerOptions,
+    ): void;
+    removeEventListener<K extends keyof RTCDtlsTransportEventMap>(
+        type: K,
+        listener: (this: RTCDtlsTransport, ev: RTCDtlsTransportEventMap[K]) => any,
+        options?: boolean | EventListenerOptions,
+    ): void;
+    removeEventListener(
+        type: string,
+        listener: EventListenerOrEventListenerObject,
+        options?: boolean | EventListenerOptions,
+    ): void;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpcodeccapability
+interface RTCRtpCodecCapability {
+    mimeType: string;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpheaderextensioncapability
+interface RTCRtpHeaderExtensionCapability {
+    uri: string;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpcapabilities
+interface RTCRtpCapabilities {
+    // codecs: RTCRtpCodecCapability[];
+    // headerExtensions: RTCRtpHeaderExtensionCapability[];
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtprtxparameters
+interface RTCRtpRtxParameters {
+    // ssrc: number;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpfecparameters
+interface RTCRtpFecParameters {
+    // ssrc: number;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpencodingparameters
+interface RTCRtpEncodingParameters {
+    // ssrc: number;
+    // rtx: RTCRtpRtxParameters;
+    // fec: RTCRtpFecParameters;
+    // dtx?: RTCDtxStatus;
+    // active: boolean;
+    // priority: RTCPriorityType;
+    // maxBitrate: number;
+    rid: string;
+    scaleResolutionDownBy?: number | undefined; // default = 1
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpheaderextensionparameters
+interface RTCRtpHeaderExtensionParameters {
+    // uri: string;
+    // id: number;
+    encrypted?: boolean | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtcpparameters
+interface RTCRtcpParameters {
+    // cname: string;
+    // reducedSize: boolean;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpcodecparameters
+interface RTCRtpCodecParameters {
+    // payloadType: number;
+    mimeType: string;
+    // clockRate: number;
+    channels?: number | undefined; // default = 1
+    sdpFmtpLine?: string | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpparameters
+interface RTCRtpParameters {
+    transactionId: string;
+    // encodings: RTCRtpEncodingParameters[];
+    // headerExtensions: RTCRtpHeaderExtensionParameters[];
+    // rtcp: RTCRtcpParameters;
+    // codecs: RTCRtpCodecParameters[];
+    // degradationPreference?: RTCDegradationPreference; // default = 'balanced'
+}
+
+// https://www.w3.org/TR/webrtc/#dom-rtcrtpcontributingsource
+interface RTCRtpContributingSource {
+    // readonly timestamp: number;
+    source: number;
+    // readonly audioLevel: number | null;
+    readonly voiceActivityFlag?: boolean | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#dom-rtcrtpsender
+interface RTCRtpSender {
+    // readonly track?: MediaStreamTrack;
+    // readonly transport?: RTCDtlsTransport;
+    // readonly rtcpTransport?: RTCDtlsTransport;
+    setParameters(parameters?: RTCRtpParameters): Promise<void>;
+    getParameters(): RTCRtpParameters;
+    replaceTrack(withTrack: MediaStreamTrack): Promise<void>;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtpreceiver
+interface RTCRtpReceiver {
+    // readonly track?: MediaStreamTrack;
+    // readonly transport?: RTCDtlsTransport;
+    // readonly rtcpTransport?: RTCDtlsTransport;
+    getParameters(): RTCRtpParameters;
+    getContributingSources(): RTCRtpContributingSource[];
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtptransceiver
+interface RTCRtpTransceiver {
+    readonly mid: string | null;
+    readonly sender: RTCRtpSender;
+    readonly receiver: RTCRtpReceiver;
+    readonly stopped: boolean;
+    direction: RTCRtpTransceiverDirection;
+    setDirection(direction: RTCRtpTransceiverDirection): void;
+    stop(): void;
+    setCodecPreferences(codecs: RTCRtpCodecCapability[]): void;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcrtptransceiverinit
+interface RTCRtpTransceiverInit {
+    direction?: RTCRtpTransceiverDirection | undefined; // default = 'sendrecv'
+    streams?: MediaStream[] | undefined;
+    sendEncodings?: RTCRtpEncodingParameters[] | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#dom-rtccertificate
+interface RTCCertificate {
+    readonly expires: number;
+    getAlgorithm(): string;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcconfiguration
+interface RTCConfiguration {
+    iceServers?: RTCIceServer[] | undefined;
+    iceTransportPolicy?: RTCIceTransportPolicy | undefined; // default = 'all'
+    bundlePolicy?: RTCBundlePolicy | undefined; // default = 'balanced'
+    rtcpMuxPolicy?: RTCRtcpMuxPolicy | undefined; // default = 'require'
+    peerIdentity?: string | undefined; // default = null
+    certificates?: RTCCertificate[] | undefined;
+    iceCandidatePoolSize?: number | undefined; // default = 0
+}
+
+// Compatibility for older definitions on DefinitelyTyped.
+type RTCPeerConnectionConfig = RTCConfiguration;
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcsctptransport
+interface RTCSctpTransport {
+    readonly transport: RTCDtlsTransport;
+    readonly maxMessageSize: number;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcdatachannelinit
+interface RTCDataChannelInit {
+    ordered?: boolean | undefined; // default = true
+    maxPacketLifeTime?: number | undefined;
+    maxRetransmits?: number | undefined;
+    protocol?: string | undefined; // default = ''
+    negotiated?: boolean | undefined; // default = false
+    id?: number | undefined;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcdatachannel
+type DataChannelEventHandler<E extends Event> = ((this: RTCDataChannel, ev: E) => any) | null;
+interface RTCDataChannel extends EventTarget {
+    readonly label: string;
+    readonly ordered: boolean;
+    readonly maxPacketLifeTime: number | null;
+    readonly maxRetransmits: number | null;
+    readonly protocol: string;
+    readonly negotiated: boolean;
+    readonly id: number | null;
+    readonly readyState: RTCDataChannelState;
+    readonly bufferedAmount: number;
+    bufferedAmountLowThreshold: number;
+    // binaryType: string;
+
+    close(): void;
+    send(data: string | Blob | ArrayBuffer | ArrayBufferView): void;
+
+    onopen: DataChannelEventHandler<Event>;
+    onmessage: DataChannelEventHandler<MessageEvent>;
+    onbufferedamountlow: DataChannelEventHandler<Event>;
+    // onerror: DataChannelEventHandler<RTCErrorEvent>;
+    onclose: DataChannelEventHandler<Event>;
+}
+
+// https://www.w3.org/TR/webrtc/#h-rtctrackevent
+interface RTCTrackEvent extends Event {
+    readonly receiver: RTCRtpReceiver;
+    readonly track: MediaStreamTrack;
+    readonly streams: readonly MediaStream[];
+    readonly transceiver: RTCRtpTransceiver;
+}
+
+// https://www.w3.org/TR/webrtc/#h-rtcpeerconnectioniceevent
+interface RTCPeerConnectionIceEvent extends Event {
+    readonly url: string | null;
+}
+
+// https://www.w3.org/TR/webrtc/#h-rtcpeerconnectioniceerrorevent
+interface RTCPeerConnectionIceErrorEvent extends Event {
+    readonly hostCandidate: string;
+    readonly url: string;
+    readonly errorCode: number;
+    readonly errorText: string;
+}
+
+// https://www.w3.org/TR/webrtc/#h-rtcdatachannelevent
+interface RTCDataChannelEvent {
+    readonly channel: RTCDataChannel;
+}
+
+// https://www.w3.org/TR/webrtc/#idl-def-rtcpeerconnection
+type PeerConnectionEventHandler<E extends Event> = ((this: RTCPeerConnection, ev: E) => any) | null;
+interface RTCPeerConnection extends EventTarget {
+    createOffer(options?: RTCOfferOptions): Promise<RTCSessionDescriptionInit>;
+    createAnswer(options?: RTCAnswerOptions): Promise<RTCSessionDescriptionInit>;
+
+    setLocalDescription(description: RTCSessionDescriptionInit): Promise<void>;
+    readonly localDescription: RTCSessionDescription | null;
+    readonly currentLocalDescription: RTCSessionDescription | null;
+    readonly pendingLocalDescription: RTCSessionDescription | null;
+
+    setRemoteDescription(description: RTCSessionDescriptionInit): Promise<void>;
+    readonly remoteDescription: RTCSessionDescription | null;
+    readonly currentRemoteDescription: RTCSessionDescription | null;
+    readonly pendingRemoteDescription: RTCSessionDescription | null;
+
+    addIceCandidate(candidate?: RTCIceCandidateInit | RTCIceCandidate): Promise<void>;
+
+    readonly signalingState: RTCSignalingState;
+    readonly connectionState: RTCPeerConnectionState;
+
+    getConfiguration(): RTCConfiguration;
+    setConfiguration(configuration: RTCConfiguration): void;
+    close(): void;
+
+    onicecandidateerror: PeerConnectionEventHandler<RTCPeerConnectionIceErrorEvent>;
+    onconnectionstatechange: PeerConnectionEventHandler<Event>;
+
+    // Extension: https://www.w3.org/TR/webrtc/#h-rtcpeerconnection-interface-extensions
+    getSenders(): RTCRtpSender[];
+    getReceivers(): RTCRtpReceiver[];
+    getTransceivers(): RTCRtpTransceiver[];
+    addTrack(track: MediaStreamTrack, ...streams: MediaStream[]): RTCRtpSender;
+    removeTrack(sender: RTCRtpSender): void;
+    addTransceiver(trackOrKind: MediaStreamTrack | string, init?: RTCRtpTransceiverInit): RTCRtpTransceiver;
+    ontrack: PeerConnectionEventHandler<RTCTrackEvent>;
+
+    // Extension: https://www.w3.org/TR/webrtc/#h-rtcpeerconnection-interface-extensions-1
+    readonly sctp: RTCSctpTransport | null;
+    createDataChannel(label: string | null, dataChannelDict?: RTCDataChannelInit): RTCDataChannel;
+    ondatachannel: PeerConnectionEventHandler<RTCDataChannelEvent>;
+
+    // Extension: https://www.w3.org/TR/webrtc/#h-rtcpeerconnection-interface-extensions-2
+    getStats(selector?: MediaStreamTrack | null): Promise<RTCStatsReport>;
+
+    // Extension: https://www.w3.org/TR/webrtc/#legacy-interface-extensions
+    // Deprecated!
+    createOffer(
+        successCallback: RTCSessionDescriptionCallback,
+        failureCallback: RTCPeerConnectionErrorCallback,
+        options?: RTCOfferOptions,
+    ): Promise<void>;
+    setLocalDescription(
+        description: RTCSessionDescriptionInit,
+        successCallback: () => void,
+        failureCallback: RTCPeerConnectionErrorCallback,
+    ): Promise<void>;
+    createAnswer(
+        successCallback: RTCSessionDescriptionCallback,
+        failureCallback: RTCPeerConnectionErrorCallback,
+    ): Promise<void>;
+    setRemoteDescription(
+        description: RTCSessionDescriptionInit,
+        successCallback: () => void,
+        failureCallback: RTCPeerConnectionErrorCallback,
+    ): Promise<void>;
+    addIceCandidate(
+        candidate: RTCIceCandidateInit | RTCIceCandidate,
+        successCallback: () => void,
+        failureCallback: RTCPeerConnectionErrorCallback,
+    ): Promise<void>;
+    getStats(
+        selector: MediaStreamTrack | null,
+        successCallback: (report: RTCStatsReport) => void,
+        failureCallback: RTCPeerConnectionErrorCallback,
+    ): Promise<void>;
+}
+interface RTCPeerConnectionStatic {
+    new(configuration?: RTCConfiguration, options?: any): RTCPeerConnection;
+    readonly defaultIceServers: RTCIceServer[];
+
+    // Extension: https://www.w3.org/TR/webrtc/#sec.cert-mgmt
+    generateCertificate(keygenAlgorithm: string): Promise<RTCCertificate>;
+}
+
+interface Window {
+    RTCPeerConnection: RTCPeerConnectionStatic;
+}
diff --git a/types/webrtc/ts5.9/index.d.ts b/types/webrtc/ts5.9/index.d.ts
new file mode 100644
index 00000000000000..f950da1943286d
--- /dev/null
+++ b/types/webrtc/ts5.9/index.d.ts
@@ -0,0 +1,2 @@
+/// <reference path="RTCPeerConnection.d.ts" />
+/// <reference path="MediaStream.d.ts" />
diff --git a/types/webrtc/ts5.9/test/MediaStream.ts b/types/webrtc/ts5.9/test/MediaStream.ts
new file mode 100644
index 00000000000000..0668afab8bca95
--- /dev/null
+++ b/types/webrtc/ts5.9/test/MediaStream.ts
@@ -0,0 +1,36 @@
+const mediaStreamConstraints: MediaStreamConstraints = { audio: true, video: true };
+
+const mediaTrackConstraintSet: MediaTrackConstraintSet = {};
+const mediaTrackConstraintArray: MediaTrackConstraintSet[] = [];
+const mediaTrackConstraints: MediaTrackConstraints = mediaTrackConstraintSet;
+const mediaTrackConstraints2: MediaTrackConstraints = { advanced: mediaTrackConstraintArray };
+
+navigator.getUserMedia(mediaStreamConstraints, stream => {
+    const track: MediaStreamTrack = stream.getTracks()[0];
+    console.log("label:" + track.label);
+    console.log("ended:" + track.readyState);
+    track.onended = (event: Event) => console.log("Track ended");
+}, error => {
+    console.log("Error message: " + error.message);
+    console.log("Error name: " + error.name);
+});
+
+navigator.webkitGetUserMedia(mediaStreamConstraints, stream => {
+    const track: MediaStreamTrack = stream.getTracks()[0];
+    console.log("label:" + track.label);
+    console.log("ended:" + track.readyState);
+    track.onended = (event: Event) => console.log("Track ended");
+}, error => {
+    console.log("Error message: " + error.message);
+    console.log("Error name: " + error.name);
+});
+
+navigator.mozGetUserMedia(mediaStreamConstraints, stream => {
+    const track: MediaStreamTrack = stream.getTracks()[0];
+    console.log("label:" + track.label);
+    console.log("ended:" + track.readyState);
+    track.onended = (event: Event) => console.log("Track ended");
+}, error => {
+    console.log("Error message: " + error.message);
+    console.log("Error name: " + error.name);
+});
diff --git a/types/webrtc/ts5.9/test/RTCPeerConnection.ts b/types/webrtc/ts5.9/test/RTCPeerConnection.ts
new file mode 100644
index 00000000000000..8ea9a2b858bf51
--- /dev/null
+++ b/types/webrtc/ts5.9/test/RTCPeerConnection.ts
@@ -0,0 +1,124 @@
+let defaultIceServers: RTCIceServer[] = window.RTCPeerConnection.defaultIceServers;
+if (defaultIceServers.length > 0) {
+    const urls = defaultIceServers[0].urls;
+}
+
+// Create a peer connection
+let ice1: RTCIceServer = {
+    urls: "stun:stun.l.google.com:19302",
+    username: "john",
+    credential: "1234",
+};
+let ice2: RTCIceServer = { urls: ["stun:stunserver.org", "stun:stun.example.com"] };
+let pc: RTCPeerConnection = new RTCPeerConnection({});
+let pc2: RTCPeerConnection = new RTCPeerConnection({
+    iceServers: [ice1, ice2],
+});
+window.RTCPeerConnection.generateCertificate("sha-256").then((cert: RTCCertificate) => {
+    new RTCPeerConnection({
+        iceServers: [ice1],
+        iceTransportPolicy: "relay",
+        bundlePolicy: "max-compat",
+        rtcpMuxPolicy: "require",
+        peerIdentity: "dude",
+        certificates: [cert],
+        iceCandidatePoolSize: 5,
+    });
+});
+
+// Get/set the configuration
+let conf: RTCConfiguration = pc2.getConfiguration();
+pc.setConfiguration(conf);
+
+// Close peer connection
+pc2.close();
+
+// Offer/answer flow
+pc.createOffer({ iceRestart: true })
+    .then((offer: RTCSessionDescriptionInit) => {
+        pc.setLocalDescription(offer);
+        pc2.setRemoteDescription(offer);
+        pc2.createAnswer().then((answer: RTCSessionDescriptionInit) => {
+            pc2.setLocalDescription(answer);
+            pc.setRemoteDescription(answer);
+        });
+    });
+
+// Event handlers
+pc.onnegotiationneeded = ev => console.log(ev.type);
+pc.onicecandidate = ev => console.log(ev.candidate);
+pc.onicecandidateerror = ev => console.log(ev.type);
+pc.onsignalingstatechange = ev => console.log(ev.type);
+pc.oniceconnectionstatechange = ev => console.log(ev.type);
+pc.onicegatheringstatechange = ev => console.log(ev.type);
+pc.onconnectionstatechange = ev => console.log(ev.type);
+pc.ontrack = ev => console.log(ev.receiver);
+pc.ondatachannel = ev => console.log(ev.channel);
+
+// State properties
+console.log(pc.signalingState);
+console.log(pc.iceGatheringState);
+console.log(pc.iceConnectionState);
+console.log(pc.connectionState);
+
+// Legacy interface extensions
+pc.createOffer(
+    (sdp: RTCSessionDescription) => console.log(sdp.sdp),
+    (error: DOMException) => console.log(error.message),
+    { iceRestart: true },
+).then(() => console.log("createOffer complete"));
+pc.setLocalDescription(
+    { type: "offer", sdp: "foobar" },
+    () => console.log("local description set"),
+    (error: DOMException) => console.log(error.message),
+).then(() => console.log("setLocalDescription complete"));
+pc.createAnswer(
+    (sdp: RTCSessionDescription) => console.log(sdp.sdp),
+    (error: DOMException) => console.log(error.message),
+).then(() => console.log("createAnswer complete"));
+pc.setRemoteDescription(
+    { type: "answer", sdp: "foobar" },
+    () => console.log("remote description set"),
+    (error: DOMException) => console.log(error.message),
+).then(() => console.log("setRemoteDescription complete"));
+pc.addIceCandidate(
+    { candidate: "candidate", sdpMid: "foo", sdpMLineIndex: 1 },
+    () => console.log("candidate added"),
+    (error: DOMException) => console.log(error.message),
+).then(() => console.log("addIceCandidate complete"));
+pc.getStats(
+    null,
+    (report: RTCStatsReport) => console.log("got report"),
+    (error: DOMException) => console.log(error.message),
+).then(() => console.log("getStats complete"));
+
+// RTCError
+const error = new RTCError({
+    errorDetail: "dtls-failure",
+    httpRequestStatusCode: 400,
+    receivedAlert: 1,
+    sctpCauseCode: 1,
+    sdpLineNumber: 1,
+    sentAlert: 1,
+});
+
+// RPCDtlsTransport
+const dtlsTransport = pc.sctp!.transport;
+dtlsTransport.onerror = (ev: RTCErrorEvent) => console.log(ev.error.errorDetail);
+dtlsTransport.onstatechange = ev => console.log(ev.type);
+dtlsTransport.addEventListener("error", (ev: RTCErrorEvent) => console.log(ev.error.errorDetail));
+dtlsTransport.addEventListener("statechange", ev => console.log(ev.type));
+console.log(dtlsTransport.state);
+
+// RPCIceTransport
+const iceTransport = dtlsTransport.iceTransport;
+iceTransport.onstatechange = ev => console.log(ev.type);
+iceTransport.ongatheringstatechange = ev => console.log(ev.type);
+iceTransport.onselectedcandidatepairchange = ev => console.log(ev.type);
+iceTransport.addEventListener("statechange", ev => console.log(ev.type));
+iceTransport.addEventListener("ongatheringstatechange", ev => console.log(ev.type));
+iceTransport.addEventListener("onselectedcandidatepairchange", ev => console.log(ev.type));
+console.log(iceTransport.role);
+console.log(iceTransport.gatheringState);
+console.log(iceTransport.getSelectedCandidatePair()!.local);
+console.log(iceTransport.getSelectedCandidatePair()!.remote);
diff --git a/types/dhtmlxscheduler/tsconfig.json b/types/webrtc/ts5.9/tsconfig.json
similarity index 71%
rename from types/dhtmlxscheduler/tsconfig.json
rename to types/webrtc/ts5.9/tsconfig.json
index 60718d5db827fe..eab932800e5834 100644
--- a/types/dhtmlxscheduler/tsconfig.json
+++ b/types/webrtc/ts5.9/tsconfig.json
@@ -5,9 +5,9 @@
             "es6",
             "dom"
         ],
-        "noImplicitAny": false,
+        "noImplicitAny": true,
         "noImplicitThis": true,
-        "strictNullChecks": false,
+        "strictNullChecks": true,
         "strictFunctionTypes": false,
         "types": [],
         "noEmit": true,
@@ -15,6 +15,7 @@
     },
     "files": [
         "index.d.ts",
-        "dhtmlxscheduler-tests.ts"
+        "test/MediaStream.ts",
+        "test/RTCPeerConnection.ts"
     ]
 }
diff --git a/types/wicg-file-system-access/index.d.ts b/types/wicg-file-system-access/index.d.ts
index 1a3d198217c303..f673c75b94af92 100644
--- a/types/wicg-file-system-access/index.d.ts
+++ b/types/wicg-file-system-access/index.d.ts
@@ -146,7 +146,7 @@ declare global {
         keys(): AsyncIterableIterator<string>;
         values(): AsyncIterableIterator<FileSystemDirectoryHandle | FileSystemFileHandle>;
         entries(): AsyncIterableIterator<[string, FileSystemDirectoryHandle | FileSystemFileHandle]>;
-        [Symbol.asyncIterator]: FileSystemDirectoryHandle["entries"];
+        [Symbol.asyncIterator](): AsyncIterableIterator<[string, FileSystemDirectoryHandle | FileSystemFileHandle]>;
         /**
          * @deprecated Old property just for Chromium <=85. Use `kind` property in the new API.
          */