diff --git a/ace-ext.d.ts b/ace-ext.d.ts
index b55a070346..3d69867334 100644
--- a/ace-ext.d.ts
+++ b/ace-ext.d.ts
@@ -792,7 +792,7 @@ declare module "ace-code/src/ext/textarea" {
                 string
             ], onLoad: (module: any) => void) => void;
             setModuleLoader: (moduleName: any, onLoad: any) => void;
-            version: "1.33.0";
+            version: "1.34.2";
         };
         edit: (el: string | (HTMLElement & {
             env?: any;
@@ -804,7 +804,7 @@ declare module "ace-code/src/ext/textarea" {
         EditSession: typeof ace.EditSession;
         UndoManager: typeof ace.UndoManager;
         VirtualRenderer: typeof ace.VirtualRenderer;
-        version: "1.33.0";
+        version: "1.34.2";
         transformTextarea: (element: any, options: any) => ace.Editor;
         defaultOptions: {
             mode: string;
diff --git a/ace-internal.d.ts b/ace-internal.d.ts
index ede44f9b2a..6f2af76970 100644
--- a/ace-internal.d.ts
+++ b/ace-internal.d.ts
@@ -432,6 +432,7 @@ export namespace Ace {
         enableMultiselect: boolean;
         enableKeyboardAccessibility: boolean;
         enableCodeLens: boolean;
+        textInputAriaLabel: string;
     }
 
     interface EventsBase {
@@ -1321,12 +1322,6 @@ declare module "./src/edit_session" {
         widgetManager?: any,
         $bracketHighlight?: any,
         $selectionMarker?: number,
-        curOp?: {
-            command: {},
-            args: string,
-            scrollTop: number,
-            [key: string]: any;
-        },
         lineWidgetsWidth?: number,
         $getWidgetScreenLength?: () => number,
         _changedWidgets?: any,
@@ -1335,9 +1330,6 @@ declare module "./src/edit_session" {
         $enableVarChar?: any,
         $wrap?: any,
         $navigateWithinSoftTabs?: boolean,
-
-        getSelectionMarkers(): any[],
-
         $selectionMarkers?: any[],
         gutterRenderer?: any,
         $firstLineNumber?: number,
@@ -1349,6 +1341,14 @@ declare module "./src/edit_session" {
         $occurMatchingLines?: any,
         $useEmacsStyleLineStart?: boolean,
         $selectLongWords?: boolean,
+        curOp?: {
+            command: {},
+            args: string,
+            scrollTop: number,
+            [key: string]: any;
+        },
+
+        getSelectionMarkers(): any[],
     }
 
 }
@@ -1417,7 +1417,6 @@ declare module "./src/virtual_renderer" {
         $maxLines?: number,
         $scrollPastEnd?: number,
         enableKeyboardAccessibility?: boolean,
-        keyboardFocusClassName?: string,
         $highlightGutterLine?: boolean,
         $minLines?: number,
         $maxPixelHeight?: number,
@@ -1430,6 +1429,7 @@ declare module "./src/virtual_renderer" {
         $theme?: any,
         destroyed?: boolean,
         session: Ace.EditSession,
+        keyboardFocusClassName?: string,
     }
 
 }
diff --git a/ace-lib.d.ts b/ace-lib.d.ts
index 56068a1933..18189a1123 100644
--- a/ace-lib.d.ts
+++ b/ace-lib.d.ts
@@ -58,7 +58,7 @@ declare module "ace-code/src/lib/deep_copy" {
 }
 declare module "ace-code/src/lib/lang" {
     export function last(a: any): any;
-    export function stringReverse(string: any): any;
+    export function stringReverse(string: string): string;
     export function stringRepeat(string: any, count: any): string;
     export function stringTrimLeft(string: any): any;
     export function stringTrimRight(string: any): any;
diff --git a/ace-modules.d.ts b/ace-modules.d.ts
index f480678281..2c34bd7f82 100644
--- a/ace-modules.d.ts
+++ b/ace-modules.d.ts
@@ -449,7 +449,7 @@ declare module "ace-code/src/config" {
             string
         ], onLoad: (module: any) => void) => void;
         setModuleLoader: (moduleName: any, onLoad: any) => void;
-        version: "1.33.0";
+        version: "1.34.2";
     };
     export = _exports;
     import AppConfig_1 = require("ace-code/src/lib/app_config");
@@ -1687,10 +1687,10 @@ declare module "ace-code/src/virtual_renderer" {
         STEPS: number;
         textarea?: HTMLTextAreaElement;
         enableKeyboardAccessibility?: boolean;
-        keyboardFocusClassName?: string;
         showInvisibles?: boolean;
         theme?: any;
         destroyed?: boolean;
+        keyboardFocusClassName?: string;
     }
     export type EditSession = import("ace-code/src/edit_session").EditSession;
     export type Point = import("ace-code").Ace.Point;
@@ -1722,11 +1722,11 @@ declare module "ace-code/src/virtual_renderer" {
     export interface VirtualRenderer extends Ace.EventEmitter<Ace.VirtualRendererEvents>, Ace.OptionsProvider<Ace.VirtualRendererOptions> {
         textarea?: HTMLTextAreaElement;
         enableKeyboardAccessibility?: boolean;
-        keyboardFocusClassName?: string;
         showInvisibles?: boolean;
         theme?: any;
         destroyed?: boolean;
         session: Ace.EditSession;
+        keyboardFocusClassName?: string;
     }
 }
 declare module "ace-code/src/selection" {
@@ -4831,7 +4831,8 @@ declare module "ace-code/src/background_tokenizer" {
         /**@type {false|number}*/
         running: false | number;
         lines: any[];
-        states: any[];
+        /**@type {string[]|string[][]}*/
+        states: string[] | string[][];
         currentLine: number;
         tokenizer: import("ace-code/src/tokenizer").Tokenizer;
         /**
@@ -4873,9 +4874,9 @@ declare module "ace-code/src/background_tokenizer" {
         /**
          * Returns the state of tokenization at the end of a row.
          * @param {Number} row The row to get state at
-         * @returns {string}
+         * @returns {string | string[]}
          **/
-        getState(row: number): string;
+        getState(row: number): string | string[];
         cleanup(): void;
     }
     export type Document = import("ace-code/src/document").Document;
@@ -5241,10 +5242,10 @@ declare module "ace-code/src/edit_session" {
         /**
          * {:BackgroundTokenizer.getState}
          * @param {Number} row The row to start at
-         * @returns {string}
+         * @returns {string | string[]}
          * @related BackgroundTokenizer.getState
          **/
-        getState(row: number): string;
+        getState(row: number): string | string[];
         /**
          * Starts tokenizing at the row indicated. Returns a list of objects of the tokenized rows.
          * @param {Number} row The row to start at
@@ -5812,17 +5813,17 @@ declare module "ace-code/src/edit_session" {
         lineWidgets: null | import("ace-code").Ace.LineWidget[];
         isFullWidth: typeof isFullWidth;
         widgetManager?: any;
+        lineWidgetsWidth?: number;
+        gutterRenderer?: any;
+        selectionMarkerCount?: number;
+        multiSelect?: any;
         curOp?: {
             [key: string]: any;
             command: {};
             args: string;
             scrollTop: number;
         };
-        lineWidgetsWidth?: number;
         getSelectionMarkers(): any[];
-        gutterRenderer?: any;
-        selectionMarkerCount?: number;
-        multiSelect?: any;
     }
     export namespace EditSession {
         export { $uid };
@@ -5863,17 +5864,17 @@ declare module "ace-code/src/edit_session" {
     export interface EditSession extends Ace.EventEmitter<Ace.EditSessionEvents>, Ace.OptionsProvider<Ace.EditSessionOptions>, Ace.Folding, Ace.BracketMatch {
         doc: Ace.Document;
         widgetManager?: any;
+        lineWidgetsWidth?: number;
+        gutterRenderer?: any;
+        selectionMarkerCount?: number;
+        multiSelect?: any;
         curOp?: {
             command: {};
             args: string;
             scrollTop: number;
             [key: string]: any;
         };
-        lineWidgetsWidth?: number;
         getSelectionMarkers(): any[];
-        gutterRenderer?: any;
-        selectionMarkerCount?: number;
-        multiSelect?: any;
     }
 }
 declare module "ace-code/src/range" {
diff --git a/ace.d.ts b/ace.d.ts
index 6107574fc5..85f7d26a0e 100644
--- a/ace.d.ts
+++ b/ace.d.ts
@@ -676,7 +676,7 @@ declare module "ace-code" {
             openingBracketBlock(session: EditSession, bracket: string, row: number, column: number, typeRe?: RegExp): Range | undefined;
             closingBracketBlock(session: EditSession, bracket: string, row: number, column: number, typeRe?: RegExp): Range | undefined;
         }
-        type BehaviorAction = (state: string, action: string, editor: Editor, session: EditSession, text: string | Range) => ({
+        type BehaviorAction = (state: string | string[], action: string, editor: Editor, session: EditSession, text: string | Range) => ({
             text: string;
             selection: number[];
         } | Range) & {
@@ -716,18 +716,18 @@ declare module "ace-code" {
             transformAction: BehaviorAction;
             path?: string;
             getTokenizer(): Tokenizer;
-            toggleCommentLines(state: any, session: EditSession, startRow: number, endRow: number): void;
-            toggleBlockComment(state: any, session: EditSession, range: Range, cursor: Point): void;
-            getNextLineIndent(state: any, line: string, tab: string): string;
-            checkOutdent(state: any, line: string, input: string): boolean;
-            autoOutdent(state: any, doc: EditSession, row: number): void;
+            toggleCommentLines(state: string | string[], session: EditSession, startRow: number, endRow: number): void;
+            toggleBlockComment(state: string | string[], session: EditSession, range: Range, cursor: Point): void;
+            getNextLineIndent(state: string | string[], line: string, tab: string): string;
+            checkOutdent(state: string | string[], line: string, input: string): boolean;
+            autoOutdent(state: string | string[], doc: EditSession, row: number): void;
             // TODO implement WorkerClient types
             createWorker(session: EditSession): any;
             createModeDelegates(mapping: {
                 [key: string]: string;
             }): void;
             getKeywords(append?: boolean): Array<string | RegExp>;
-            getCompletions(state: string, session: EditSession, pos: Point, prefix: string): Completion[];
+            getCompletions(state: string | string[], session: EditSession, pos: Point, prefix: string): Completion[];
         }
         interface OptionsBase {
             [key: string]: any;
@@ -981,7 +981,7 @@ declare module "ace-code" {
             string
         ], onLoad: (module: any) => void) => void;
         setModuleLoader: (moduleName: any, onLoad: any) => void;
-        version: "1.33.0";
+        version: "1.34.2";
     };
     export function edit(el: string | (HTMLElement & {
         env?: any;
@@ -998,6 +998,6 @@ declare module "ace-code" {
     import UndoManager = UndoManager_2.UndoManager;
     import Renderer_1 = require("ace-code/src/virtual_renderer");
     import Renderer = Renderer_1.VirtualRenderer;
-    export var version: "1.33.0";
+    export var version: "1.34.2";
     export { Range, Editor, EditSession, UndoManager, Renderer as VirtualRenderer };
 }
diff --git a/src/editor.js b/src/editor.js
index bfc4e93a14..5afdbc7fe7 100644
--- a/src/editor.js
+++ b/src/editor.js
@@ -260,9 +260,7 @@ class Editor {
     getKeyboardHandler() {
         return this.keyBinding.getKeyboardHandler();
     }
-
-
-   
+    
     /**
      * Sets a new editsession to use. This method also emits the `'changeSession'` event.
      * @param {EditSession} [session] The new session to use
diff --git a/src/lib/lang.js b/src/lib/lang.js
index dfb7c6d0d4..b447c27570 100644
--- a/src/lib/lang.js
+++ b/src/lib/lang.js
@@ -4,6 +4,8 @@ exports.last = function(a) {
     return a[a.length - 1];
 };
 
+
+/** @param {string} string */
 exports.stringReverse = function(string) {
     return string.split("").reverse().join("");
 };