Merge pull request #3365 from jerch/fix_3362

allow cursor to stick at cols in ED/EL

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:10
+FROM node:14
 
 # Configure apt
 ENV DEBIAN_FRONTEND=noninteractive

.eslintrc.json

@@ -43,10 +43,11 @@
     "@typescript-eslint/array-type": [
       "warn",
       {
-        "default": "array-simple",
+        "default": "array",
         "readonly": "generic"
       }
     ],
+    "@typescript-eslint/consistent-type-assertions": "warn",
     "@typescript-eslint/consistent-type-definitions": "warn",
     "@typescript-eslint/explicit-function-return-type": [
       "warn",

README.md

@@ -143,7 +143,6 @@ Xterm.js is used in several world-class applications to provide great terminal e
 - [**cPanel & WHM**](https://cpanel.com): The hosting platform of choice.
 - [**Nutanix**](https://github.com/nutanix): Nutanix Enterprise Cloud uses xterm in the webssh functionality within Nutanix Calm, and is also looking to move our old noserial (termjs) functionality to xterm.js.
 - [**SSH Web Client**](https://github.com/roke22/PHP-SSH2-Web-Client): SSH Web Client with PHP.
-- [**Shellvault**](https://www.shellvault.io): The cloud-based SSH terminal you can access from anywhere.
 - [**Juno**](http://junolab.org/): A flexible Julia IDE, based on Atom.
 - [**webssh**](https://github.com/huashengdun/webssh): Web based ssh client.
 - [**info-beamer hosted**](https://info-beamer.com): Uses xterm.js to manage digital signage devices from the web dashboard.
@@ -175,7 +174,9 @@ Xterm.js is used in several world-class applications to provide great terminal e
 - [**gifcast**](https://dstein64.github.io/gifcast/): Converts an asciinema cast to an animated GIF.
 - [**WizardWebssh**](https://gitlab.com/mikeramsey/wizardwebssh): A terminal with Pyqt5 Widget for embedding, which can be used as an ssh client to connect to your ssh servers. It is written in Python, based on tornado, paramiko, and xterm.js.
 - [**Wizard Assistant**](https://wizardassistant.com/): Wizard Assistant comes with advanced automation tools, preloaded common and special time-saving commands, and a built-in SSH terminal. Now you can remotely administer, troubleshoot, and analyze any system with ease. 
-[And much more...](https://github.com/xtermjs/xterm.js/network/dependents)
+- [**ucli**](https://github.com/tsadarsh/ucli): Command Line for everyone :family_man_woman_girl_boy: at [www.ucli.tech](https://www.ucli.tech).
+- [**Tess**](https://github.com/SquitchYT/Tess/): Simple Terminal Fully Customizable for Everyone.
+- [And much more...](https://github.com/xtermjs/xterm.js/network/dependents)
 
 Do you use xterm.js in your application as well? Please [open a Pull Request](https://github.com/sourcelair/xterm.js/pulls) to include it here. We would love to have it on our list. Note: Please add any new contributions to the end of the list only.
 

addons/xterm-addon-attach/src/AttachAddon.ts

@@ -20,7 +20,7 @@ export class AttachAddon implements ITerminalAddon {
     this._socket = socket;
     // always set binary type to arraybuffer, we do not handle blobs
     this._socket.binaryType = 'arraybuffer';
-    this._bidirectional = (options && options.bidirectional === false) ? false : true;
+    this._bidirectional = !(options && options.bidirectional === false);
   }
 
   public activate(terminal: Terminal): void {

addons/xterm-addon-ligatures/src/font.ts

@@ -15,6 +15,15 @@ interface IFontMetadata {
   blob: () => Promise<Blob>;
 }
 
+interface IFontAccessNavigator {
+  fonts: {
+    query: () => Promise<IFontMetadata[]>;
+  };
+  permissions: {
+    request?: (permission: { name: string }) => Promise<{state: string}>;
+  };
+}
+
 let fontsPromise: Promise<FontList | Record<string, IFontMetadata[]>> | undefined = undefined;
 
 /**
@@ -28,7 +37,7 @@ export default async function load(fontFamily: string, cacheSize: number): Promi
     // Web environment that supports font access API
     if (typeof navigator !== 'undefined' && 'fonts' in navigator) {
       try {
-        const status = await (navigator as any).permissions.request?.({
+        const status = await (navigator as IFontAccessNavigator).permissions.request?.({
           name: 'local-fonts'
         });
         if (status && status.state !== 'granted') {
@@ -44,8 +53,8 @@ export default async function load(fontFamily: string, cacheSize: number): Promi
       }
       const fonts: Record<string, IFontMetadata[]> = {};
       try {
-        const fontsIterator: AsyncIterableIterator<IFontMetadata> = (navigator as any).fonts.query();
-        for await (const metadata of fontsIterator) {
+        const fontsIterator = await (navigator as IFontAccessNavigator).fonts.query();
+        for (const metadata of fontsIterator) {
           if (!fonts.hasOwnProperty(metadata.family)) {
             fonts[metadata.family] = [];
           }

addons/xterm-addon-search/src/SearchAddon.ts

@@ -394,7 +394,7 @@ export class SearchAddon implements ITerminalAddon {
     // If it is not in the viewport then we scroll else it just gets selected
     if (result.row >= (terminal.buffer.active.viewportY + terminal.rows) || result.row < terminal.buffer.active.viewportY) {
       let scroll = result.row - terminal.buffer.active.viewportY;
-      scroll = scroll - Math.floor(terminal.rows / 2);
+      scroll -= Math.floor(terminal.rows / 2);
       terminal.scrollLines(scroll);
     }
     return true;

addons/xterm-addon-serialize/benchmark/SerializeAddon.benchmark.ts

@@ -35,7 +35,7 @@ perfContext('Terminal: sh -c "dd if=/dev/urandom count=40 bs=1k | hexdump | lolc
       chunks.push(data as unknown as Buffer);
       length += data.length;
     });
-    await new Promise(resolve => p.on('exit', () => resolve()));
+    await new Promise<void>(resolve => p.on('exit', () => resolve()));
     contentUtf8 = Buffer.concat(chunks, length);
     // translate to content string
     const buffer = new Uint32Array(contentUtf8.length);

addons/xterm-addon-serialize/test/SerializeAddon.api.ts

@@ -487,9 +487,9 @@ function newArray<T>(initial: T | ((index: number) => T), count: number): T[] {
   const array: T[] = new Array<T>(count);
   for (let i = 0; i < array.length; i++) {
     if (typeof initial === 'function') {
-      array[i] = (<(index: number) => T>initial)(i);
+      array[i] = (initial as (index: number) => T)(i);
     } else {
-      array[i] = <T>initial;
+      array[i] = initial as T;
     }
   }
   return array;

addons/xterm-addon-webgl/package.json

@@ -1,6 +1,6 @@
 {
   "name": "xterm-addon-webgl",
-  "version": "0.11.0",
+  "version": "0.11.1",
   "author": {
     "name": "The xterm.js authors",
     "url": "https://xtermjs.org/"

addons/xterm-addon-webgl/src/GlyphRenderer.ts

@@ -263,7 +263,7 @@ export class GlyphRenderer {
         // Get attributes from fg (excluding inverse) and resolve inverse by pullibng rgb colors
         // from bg. This is needed since the inverse fg color should be based on the original bg
         // color, not on the selection color
-        fg = (fg & ~(Attributes.CM_MASK | Attributes.RGB_MASK | FgFlags.INVERSE));
+        fg &= ~(Attributes.CM_MASK | Attributes.RGB_MASK | FgFlags.INVERSE);
         switch (workCell.getBgColorMode()) {
           case Attributes.CM_P16:
           case Attributes.CM_P256:

addons/xterm-addon-webgl/src/WebglAddon.ts

@@ -24,9 +24,9 @@ export class WebglAddon implements ITerminalAddon {
       throw new Error('Cannot activate WebglAddon before Terminal.open');
     }
     this._terminal = terminal;
-    const renderService: IRenderService = (<any>terminal)._core._renderService;
-    const characterJoinerService: ICharacterJoinerService = (<any>terminal)._core._characterJoinerService;
-    const colors: IColorSet = (<any>terminal)._core._colorManager.colors;
+    const renderService: IRenderService = (terminal as any)._core._renderService;
+    const characterJoinerService: ICharacterJoinerService = (terminal as any)._core._characterJoinerService;
+    const colors: IColorSet = (terminal as any)._core._colorManager.colors;
     this._renderer = new WebglRenderer(terminal, colors, characterJoinerService, this._preserveDrawingBuffer);
     this._renderer.onContextLoss(() => this._onContextLoss.fire());
     renderService.setRenderer(this._renderer);

addons/xterm-addon-webgl/src/WebglRenderer.ts

@@ -342,7 +342,7 @@ export class WebglRenderer extends Disposable implements IRenderer {
 
         // Flag combined chars with a bit mask so they're easily identifiable
         if (chars.length > 1) {
-          code = code | COMBINED_CHAR_BIT_MASK;
+          code |= COMBINED_CHAR_BIT_MASK;
         }
 
         // Cache the results in the model

addons/xterm-addon-webgl/typings/xterm-addon-webgl.d.ts

@@ -3,8 +3,7 @@
  * @license MIT
  */
 
-import { IEvent } from 'node-pty';
-import { Terminal, ITerminalAddon } from 'xterm';
+import { Terminal, ITerminalAddon, IEvent } from 'xterm';
 
 declare module 'xterm-addon-webgl' {
   /**

azure-pipelines.yml

@@ -10,7 +10,7 @@ jobs:
   steps:
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - task: YarnInstaller@3
     inputs:
@@ -43,7 +43,7 @@ jobs:
   steps:
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - task: CacheBeta@1
     inputs:
@@ -63,7 +63,7 @@ jobs:
   steps:
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - task: CacheBeta@1
     inputs:
@@ -92,7 +92,7 @@ jobs:
     displayName: Install required packages
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - task: YarnInstaller@3
     inputs:
@@ -111,7 +111,7 @@ jobs:
   steps:
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - script: yarn --frozen-lockfile
     displayName: 'Install dependencies and build'
@@ -128,7 +128,7 @@ jobs:
   steps:
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - script: yarn --frozen-lockfile
     displayName: 'Install dependencies and build'
@@ -151,7 +151,7 @@ jobs:
   steps:
   - task: NodeTool@0
     inputs:
-      versionSpec: '10.x'
+      versionSpec: '14.x'
     displayName: 'Install Node.js'
   - task: YarnInstaller@3
     inputs:

package.json

@@ -34,37 +34,37 @@
     "vtfeatures": "node bin/extract_vtfeatures.js src/**/*.ts src/*.ts"
   },
   "devDependencies": {
-    "@types/chai": "^4.2.14",
+    "@types/chai": "^4.2.18",
     "@types/debug": "^4.1.5",
     "@types/deep-equal": "^1.0.1",
     "@types/glob": "^7.1.3",
-    "@types/jsdom": "^16.2.5",
-    "@types/mocha": "^8.0.3",
-    "@types/node": "^10.17.17",
+    "@types/jsdom": "^16.2.10",
+    "@types/mocha": "^8.2.2",
+    "@types/node": "^14.14.44",
     "@types/utf8": "^2.1.6",
-    "@types/webpack": "^4.41.24",
-    "@types/ws": "^7.2.9",
-    "@typescript-eslint/eslint-plugin": "^4.0.0",
-    "@typescript-eslint/parser": "^3.10.1",
-    "chai": "^4.2.0",
-    "deep-equal": "^2.0.4",
-    "eslint": "^7.12.1",
+    "@types/webpack": "^5.28.0",
+    "@types/ws": "^7.4.4",
+    "@typescript-eslint/eslint-plugin": "^4.23.0",
+    "@typescript-eslint/parser": "^4.23.0",
+    "chai": "^4.3.4",
+    "deep-equal": "^2.0.5",
+    "eslint": "^7.26.0",
     "express": "^4.17.1",
     "express-ws": "^4.0.0",
-    "glob": "^7.0.5",
-    "jsdom": "^16.4.0",
-    "mocha": "^8.2.1",
-    "mustache": "^4.0.1",
-    "node-pty": "^0.9.0",
+    "glob": "^7.1.7",
+    "jsdom": "^16.5.3",
+    "mocha": "^8.4.0",
+    "mustache": "^4.2.0",
+    "node-pty": "^0.10.1",
     "nyc": "^15.1.0",
-    "playwright": "^1.5.2",
-    "source-map-loader": "^1.1.2",
-    "ts-loader": "^8.0.8",
-    "typescript": "4.0",
+    "playwright": "^1.11.0",
+    "source-map-loader": "^2.0.1",
+    "ts-loader": "^9.1.2",
+    "typescript": "^4.2.4",
     "utf8": "^3.0.0",
-    "webpack": "^5.4.0",
-    "webpack-cli": "^4.2.0",
-    "ws": "^7.3.1",
-    "xterm-benchmark": "^0.1.3"
+    "webpack": "^5.37.0",
+    "webpack-cli": "^4.7.0",
+    "ws": "^7.4.5",
+    "xterm-benchmark": "^0.2.1"
   }
 }

src/browser/AccessibilityManager.ts

@@ -112,7 +112,7 @@ export class AccessibilityManager extends Disposable {
   }
 
   private _onBoundaryFocus(e: FocusEvent, position: BoundaryPosition): void {
-    const boundaryElement = <HTMLElement>e.target;
+    const boundaryElement = e.target as HTMLElement;
     const beforeBoundaryElement = this._rowElements[position === BoundaryPosition.TOP ? 1 : this._rowElements.length - 2];
 
     // Don't scroll if the buffer top has reached the end in that direction

src/browser/ColorManager.test.ts

@@ -17,7 +17,7 @@ describe('ColorManager', () => {
     dom = new jsdom.JSDOM('');
     window = dom.window;
     document = window.document;
-    (<any>window).HTMLCanvasElement.prototype.getContext = () => ({
+    (window as any).HTMLCanvasElement.prototype.getContext = () => ({
       createLinearGradient(): any {
         return null;
       },
@@ -36,7 +36,7 @@ describe('ColorManager', () => {
       for (const key of Object.keys(cm.colors)) {
         if (key !== 'ansi' && key !== 'contrastCache') {
           // A #rrggbb or rgba(...)
-          assert.ok((<any>cm.colors)[key].css.length >= 7);
+          assert.ok((cm.colors as any)[key].css.length >= 7);
         }
       }
       assert.equal(cm.colors.ansi.length, 256);

src/browser/Linkifier.test.ts

@@ -174,7 +174,7 @@ describe('Linkifier', () => {
             assert.equal(mouseZoneManager.zones[0].y1, 1);
             assert.equal(mouseZoneManager.zones[0].y2, 1);
             // Fires done()
-            mouseZoneManager.zones[0].clickCallback(<any>{});
+            mouseZoneManager.zones[0].clickCallback({} as any);
           }
         });
         linkifier.linkifyRows();
@@ -210,7 +210,7 @@ describe('Linkifier', () => {
         let count = 0;
         linkifier.registerLinkMatcher(/test/, () => assert.fail(), {
           validationCallback: (url, cb) => {
-            count += 1;
+            count++;
             if (count === 2) {
               done();
             }

src/browser/Linkifier.ts

@@ -89,7 +89,9 @@ export class Linkifier implements ILinkifier {
     if (this._rowsTimeoutId) {
       clearTimeout(this._rowsTimeoutId);
     }
-    this._rowsTimeoutId = <number><any>setTimeout(() => this._linkifyRows(), Linkifier._timeBeforeLatency);
+
+    // Cannot use window.setTimeout since tests need to run in node
+    this._rowsTimeoutId = setTimeout(() => this._linkifyRows(), Linkifier._timeBeforeLatency) as any as number;
   }
 
   /**

src/browser/Terminal.test.ts

@@ -29,10 +29,10 @@ describe('Terminal', () => {
   beforeEach(() => {
     term = new TestTerminal(termOptions);
     term.refresh = () => { };
-    (<any>term).renderer = new MockRenderer();
+    (term as any).renderer = new MockRenderer();
     term.viewport = new MockViewport();
-    (<any>term)._compositionHelper = new MockCompositionHelper();
-    (<any>term).element = {
+    (term as any)._compositionHelper = new MockCompositionHelper();
+    (term as any).element = {
       classList: {
         toggle: () => { },
         remove: () => { }
@@ -86,12 +86,12 @@ describe('Terminal', () => {
         assert.equal(e.domEvent instanceof Object, true);
         done();
       });
-      const evKeyPress = <KeyboardEvent>{
+      const evKeyPress = {
         preventDefault: () => { },
         stopPropagation: () => { },
         type: 'keypress',
         keyCode: 13
-      };
+      } as KeyboardEvent;
       term.keyPress(evKeyPress);
     });
     it('should fire a key event after a keydown DOM event', (done) => {
@@ -100,13 +100,13 @@ describe('Terminal', () => {
         assert.equal(e.domEvent instanceof Object, true);
         done();
       });
-      (<any>term).textarea = { value: '' };
-      const evKeyDown = <KeyboardEvent>{
+      (term as any).textarea = { value: '' };
+      const evKeyDown = {
         preventDefault: () => { },
         stopPropagation: () => { },
         type: 'keydown',
         keyCode: 13
-      };
+      } as KeyboardEvent;
       term.keyDown(evKeyDown);
     });
     it('should fire the onResize event', (done) => {
@@ -140,18 +140,18 @@ describe('Terminal', () => {
   });
 
   describe('attachCustomKeyEventHandler', () => {
-    const evKeyDown = <KeyboardEvent>{
+    const evKeyDown = {
       preventDefault: () => { },
       stopPropagation: () => { },
       type: 'keydown',
       keyCode: 77
-    };
-    const evKeyPress = <KeyboardEvent>{
+    } as KeyboardEvent;
+    const evKeyPress = {
       preventDefault: () => { },
       stopPropagation: () => { },
       type: 'keypress',
       keyCode: 77
-    };
+    } as KeyboardEvent;
 
     beforeEach(() => {
       term.clearSelection = () => { };
@@ -374,13 +374,13 @@ describe('Terminal', () => {
 
     describe('keyPress', () => {
       it('should scroll down, when a key is pressed and terminal is scrolled up', () => {
-        const event = <KeyboardEvent>{
+        const event = {
           type: 'keydown',
           key: 'a',
           keyCode: 65,
           preventDefault: () => { },
           stopPropagation: () => { }
-        };
+        } as KeyboardEvent;
 
         term.buffer.ydisp = 0;
         term.buffer.ybase = 40;
@@ -403,7 +403,7 @@ describe('Terminal', () => {
         assert.equal(term.buffer.ydisp, startYDisp);
         term.scrollLines(-1);
         assert.equal(term.buffer.ydisp, startYDisp - 1);
-        term.keyPress(<KeyboardEvent>{ keyCode: 0 });
+        term.keyPress({ keyCode: 0 });
         assert.equal(term.buffer.ydisp, startYDisp - 1);
       });
     });

src/browser/Terminal.ts

@@ -72,7 +72,7 @@ export class Terminal extends CoreTerminal implements ITerminal {
 
   // private _visualBellTimer: number;
 
-  public browser: IBrowser = <any>Browser;
+  public browser: IBrowser = Browser as any;
 
   // TODO: We should remove options once components adopt optionsService
   public get options(): IInitializedTerminalOptions { return this.optionsService.options; }
@@ -601,7 +601,7 @@ export class Terminal extends CoreTerminal implements ITerminal {
 
       let but: CoreMouseButton;
       let action: CoreMouseAction | undefined;
-      switch ((<any>ev).overrideType || ev.type) {
+      switch ((ev as any).overrideType || ev.type) {
         case 'mousemove':
           action = CoreMouseAction.MOVE;
           if (ev.buttons === undefined) {

src/browser/Terminal2.test.ts

@@ -17,6 +17,7 @@ const ROWS = 25;
 
 const TESTFILES = glob.sync('**/escape_sequence_files/*.in', { cwd: path.join(__dirname, '../..')});
 const SKIP_FILES = [
+  't0055-EL.in',            // EL/ED handle cursor at cols differently (see #3362)
   't0084-CBT.in',
   't0101-NLM.in',
   't0103-reverse_wrap.in',  // not comparable, we deviate from xterm reverse wrap on purpose
@@ -73,7 +74,7 @@ describe('Escape Sequence Files', function(): void {
       // register handler to trigger viewport scraping, wait for it to finish
       let content = '';
       const OSC_CODE = 12345;
-      await new Promise(resolve => {
+      await new Promise<void>(resolve => {
         customHandler = term.registerOscHandler(OSC_CODE, () => {
           // grab terminal viewport content
           content = terminalToString(term);
@@ -105,7 +106,7 @@ function formatError(input: string, output: string, expected: string): string {
   function addLineNumber(start: number, color: string): (s: string) => string {
     let counter = start || 0;
     return (s: string): string => {
-      counter += 1;
+      counter++;
       return '\x1b[33m' + (' ' + counter).slice(-2) + color + s;
     };
   }

src/browser/TestUtils.test.ts

@@ -153,7 +153,7 @@ export class MockTerminal implements ITerminal {
   public textarea!: HTMLTextAreaElement;
   public rows!: number;
   public cols!: number;
-  public browser: IBrowser = <any>Browser;
+  public browser: IBrowser = Browser as any;
   public writeBuffer!: string[];
   public children!: HTMLElement[];
   public cursorHidden!: boolean;

src/browser/input/CompositionHelper.test.ts

@@ -49,7 +49,7 @@ describe('CompositionHelper', () => {
     it('Should insert simple characters', (done) => {
       // First character 'ㅇ'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent><CompositionEvent>{ data: 'ㅇ' });
+      compositionHelper.compositionupdate({ data: 'ㅇ' });
       textarea.value = 'ㅇ';
       setTimeout(() => { // wait for any textarea updates
         compositionHelper.compositionend();
@@ -57,7 +57,7 @@ describe('CompositionHelper', () => {
           assert.equal(handledText, 'ㅇ');
           // Second character 'ㅇ'
           compositionHelper.compositionstart();
-          compositionHelper.compositionupdate(<CompositionEvent><CompositionEvent>{ data: 'ㅇ' });
+          compositionHelper.compositionupdate({ data: 'ㅇ' });
           textarea.value = 'ㅇㅇ';
           setTimeout(() => { // wait for any textarea updates
             compositionHelper.compositionend();
@@ -73,13 +73,13 @@ describe('CompositionHelper', () => {
     it('Should insert complex characters', (done) => {
       // First character '앙'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
+      compositionHelper.compositionupdate({ data: 'ㅇ' });
       textarea.value = 'ㅇ';
       setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
+        compositionHelper.compositionupdate({ data: '아' });
         textarea.value = '아';
         setTimeout(() => { // wait for any textarea updates
-          compositionHelper.compositionupdate(<CompositionEvent>{ data: '앙' });
+          compositionHelper.compositionupdate({ data: '앙' });
           textarea.value = '앙';
           setTimeout(() => { // wait for any textarea updates
             compositionHelper.compositionend();
@@ -87,13 +87,13 @@ describe('CompositionHelper', () => {
               assert.equal(handledText, '앙');
               // Second character '앙'
               compositionHelper.compositionstart();
-              compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
+              compositionHelper.compositionupdate({ data: 'ㅇ' });
               textarea.value = '앙ㅇ';
               setTimeout(() => { // wait for any textarea updates
-                compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
+                compositionHelper.compositionupdate({ data: '아' });
                 textarea.value = '앙아';
                 setTimeout(() => { // wait for any textarea updates
-                  compositionHelper.compositionupdate(<CompositionEvent>{ data: '앙' });
+                  compositionHelper.compositionupdate({ data: '앙' });
                   textarea.value = '앙앙';
                   setTimeout(() => { // wait for any textarea updates
                     compositionHelper.compositionend();
@@ -113,19 +113,19 @@ describe('CompositionHelper', () => {
     it('Should insert complex characters that change with following character', (done) => {
       // First character '아'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
+      compositionHelper.compositionupdate({ data: 'ㅇ' });
       textarea.value = 'ㅇ';
       setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
+        compositionHelper.compositionupdate({ data: '아' });
         textarea.value = '아';
         setTimeout(() => { // wait for any textarea updates
           // Start second character '아' in first character
-          compositionHelper.compositionupdate(<CompositionEvent>{ data: '앙' });
+          compositionHelper.compositionupdate({ data: '앙' });
           textarea.value = '앙';
           setTimeout(() => { // wait for any textarea updates
             compositionHelper.compositionend();
             compositionHelper.compositionstart();
-            compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
+            compositionHelper.compositionupdate({ data: '아' });
             textarea.value = '아아';
             setTimeout(() => { // wait for any textarea updates
               compositionHelper.compositionend();
@@ -142,14 +142,14 @@ describe('CompositionHelper', () => {
     it('Should insert multi-characters compositions', (done) => {
       // First character 'だ'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'd' });
+      compositionHelper.compositionupdate({ data: 'd' });
       textarea.value = 'd';
       setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だ' });
+        compositionHelper.compositionupdate({ data: 'だ' });
         textarea.value = 'だ';
         setTimeout(() => { // wait for any textarea updates
           // Second character 'あ'
-          compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だあ' });
+          compositionHelper.compositionupdate({ data: 'だあ' });
           textarea.value = 'だあ';
           setTimeout(() => { // wait for any textarea updates
             compositionHelper.compositionend();
@@ -165,18 +165,18 @@ describe('CompositionHelper', () => {
     it('Should insert multi-character compositions that are converted to other characters with the same length', (done) => {
       // First character 'だ'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'd' });
+      compositionHelper.compositionupdate({ data: 'd' });
       textarea.value = 'd';
       setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だ' });
+        compositionHelper.compositionupdate({ data: 'だ' });
         textarea.value = 'だ';
         setTimeout(() => { // wait for any textarea updates
           // Second character 'ー'
-          compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だー' });
+          compositionHelper.compositionupdate({ data: 'だー' });
           textarea.value = 'だー';
           setTimeout(() => { // wait for any textarea updates
             // Convert to katakana 'ダー'
-            compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ダー' });
+            compositionHelper.compositionupdate({ data: 'ダー' });
             textarea.value = 'ダー';
             setTimeout(() => { // wait for any textarea updates
               compositionHelper.compositionend();
@@ -193,18 +193,18 @@ describe('CompositionHelper', () => {
     it('Should insert multi-character compositions that are converted to other characters with different lengths', (done) => {
       // First character 'い'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'い' });
+      compositionHelper.compositionupdate({ data: 'い' });
       textarea.value = 'い';
       setTimeout(() => { // wait for any textarea updates
         // Second character 'ま'
-        compositionHelper.compositionupdate(<CompositionEvent>{ data: 'いm' });
+        compositionHelper.compositionupdate({ data: 'いm' });
         textarea.value = 'いm';
         setTimeout(() => { // wait for any textarea updates
-          compositionHelper.compositionupdate(<CompositionEvent>{ data: 'いま' });
+          compositionHelper.compositionupdate({ data: 'いま' });
           textarea.value = 'いま';
           setTimeout(() => { // wait for any textarea updates
             // Convert to kanji '今'
-            compositionHelper.compositionupdate(<CompositionEvent>{ data: '今' });
+            compositionHelper.compositionupdate({ data: '今' });
             textarea.value = '今';
             setTimeout(() => { // wait for any textarea updates
               compositionHelper.compositionend();
@@ -221,7 +221,7 @@ describe('CompositionHelper', () => {
     it('Should insert non-composition characters input immediately after composition characters', (done) => {
       // First character 'ㅇ'
       compositionHelper.compositionstart();
-      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
+      compositionHelper.compositionupdate({ data: 'ㅇ' });
       textarea.value = 'ㅇ';
       setTimeout(() => { // wait for any textarea updates
         compositionHelper.compositionend();

src/browser/input/CompositionHelper.ts

@@ -69,7 +69,7 @@ export class CompositionHelper {
    * Handles the compositionupdate event, updating the composition view.
    * @param ev The event.
    */
-  public compositionupdate(ev: CompositionEvent): void {
+  public compositionupdate(ev: Pick<CompositionEvent, 'data'>): void {
     this._compositionView.textContent = ev.data;
     this.updateCompositionElements();
     setTimeout(() => {

src/browser/public/AddonManager.ts

@@ -31,7 +31,7 @@ export class AddonManager implements IDisposable {
     };
     this._addons.push(loadedAddon);
     instance.dispose = () => this._wrappedAddonDispose(loadedAddon);
-    instance.activate(<any>terminal);
+    instance.activate(terminal as any);
   }
 
   private _wrappedAddonDispose(loadedAddon: ILoadedAddon): void {

src/browser/public/Terminal.ts

@@ -280,7 +280,7 @@ class BufferLineApiView implements IBufferLineApi {
     }
 
     if (cell) {
-      this._line.loadCell(x, <ICellData>cell);
+      this._line.loadCell(x, cell as ICellData);
       return cell;
     }
     return this._line.loadCell(x, new CellData());

src/browser/renderer/atlas/CharAtlasUtils.ts

@@ -10,7 +10,7 @@ import { ITerminalOptions } from 'common/services/Services';
 
 export function generateConfig(scaledCharWidth: number, scaledCharHeight: number, options: ITerminalOptions, colors: IColorSet): ICharAtlasConfig {
   // null out some fields that don't matter
-  const clonedColors = <IPartialColorSet>{
+  const clonedColors: IPartialColorSet = {
     foreground: colors.foreground,
     background: colors.background,
     cursor: undefined,

src/browser/renderer/dom/DomRenderer.ts

@@ -387,7 +387,7 @@ export class DomRenderer extends Disposable implements IRenderer {
       if (!row) {
         return;
       }
-      const span = <HTMLElement>row.children[x];
+      const span = row.children[x] as HTMLElement;
       if (span) {
         span.style.textDecoration = enabled ? 'underline' : 'none';
       }

src/browser/services/CharacterJoinerService.test.ts

@@ -270,7 +270,7 @@ function lineData(data: IPartialLineData[]): IBufferLine {
   const tline = new BufferLine(0);
   for (let i = 0; i < data.length; ++i) {
     const line = data[i][0];
-    const attr = <number>(data[i][1] || 0);
+    const attr = (data[i][1] || 0) as number;
     const offset = tline.length;
     tline.resize(tline.length + line.split('').length, CellData.fromCharData([0, '', 0, 0]));
     line.split('').map((char, idx) => tline.setCell(idx + offset, CellData.fromCharData([attr, char, 1, char.charCodeAt(0)])));

src/browser/services/SelectionService.ts

@@ -133,8 +133,8 @@ export class SelectionService extends Disposable implements ISelectionService {
     super();
 
     // Init listeners
-    this._mouseMoveListener = event => this._onMouseMove(<MouseEvent>event);
-    this._mouseUpListener = event => this._onMouseUp(<MouseEvent>event);
+    this._mouseMoveListener = event => this._onMouseMove(event as MouseEvent);
+    this._mouseUpListener = event => this._onMouseUp(event as MouseEvent);
     this._coreService.onUserInput(() => {
       if (this.hasSelection) {
         this.clearSelection();

src/browser/services/SoundService.ts

@@ -13,7 +13,7 @@ export class SoundService implements ISoundService {
 
   public static get audioContext(): AudioContext | null {
     if (!SoundService._audioContext) {
-      const audioContextCtor: typeof AudioContext = (<any>window).AudioContext || (<any>window).webkitAudioContext;
+      const audioContextCtor: typeof AudioContext = (window as any).AudioContext || (window as any).webkitAudioContext;
       if (!audioContextCtor) {
         console.warn('Web Audio API is not supported by this browser. Consider upgrading to the latest version');
         return null;

src/common/Clone.ts

@@ -16,7 +16,7 @@ export function clone<T>(val: T, depth: number = 5): T {
 
   for (const key in val) {
     // Recursively clone eack item unless we're at the maximum depth
-    clonedObject[key] = depth <= 1 ? val[key] : (val[key] ? clone(val[key], depth - 1) : val[key]);
+    clonedObject[key] = depth <= 1 ? val[key] : (val[key] && clone(val[key], depth - 1));
   }
 
   return clonedObject as T;

src/common/InputHandler.test.ts

@@ -77,7 +77,7 @@ describe('InputHandler', () => {
       optionsService.options.scrollback = 1;
       bufferService.reset();
     });
-    it('SL (scrollLeft)', async () => {
+    it('SL (scrollLeft)', () => {
       inputHandler.parseP('12345'.repeat(6));
       inputHandler.parseP('\x1b[ @');
       assert.deepEqual(getLines(bufferService, 6), ['12345', '2345', '2345', '2345', '2345', '2345']);
@@ -86,7 +86,7 @@ describe('InputHandler', () => {
       inputHandler.parseP('\x1b[2 @');
       assert.deepEqual(getLines(bufferService, 6), ['12345', '5', '5', '5', '5', '5']);
     });
-    it('SR (scrollRight)', async () => {
+    it('SR (scrollRight)', () => {
       inputHandler.parseP('12345'.repeat(6));
       inputHandler.parseP('\x1b[ A');
       assert.deepEqual(getLines(bufferService, 6), ['12345', ' 1234', ' 1234', ' 1234', ' 1234', ' 1234']);
@@ -95,7 +95,7 @@ describe('InputHandler', () => {
       inputHandler.parseP('\x1b[2 A');
       assert.deepEqual(getLines(bufferService, 6), ['12345', '    1', '    1', '    1', '    1', '    1']);
     });
-    it('insertColumns (DECIC)', async () => {
+    it('insertColumns (DECIC)', () => {
       inputHandler.parseP('12345'.repeat(6));
       inputHandler.parseP('\x1b[3;3H');
       inputHandler.parseP('\x1b[\'}');
@@ -111,7 +111,7 @@ describe('InputHandler', () => {
       inputHandler.parseP('\x1b[2\'}');
       assert.deepEqual(getLines(bufferService, 6), ['12345', '12  3', '12  3', '12  3', '12  3', '12  3']);
     });
-    it('deleteColumns (DECDC)', async () => {
+    it('deleteColumns (DECDC)', () => {
       inputHandler.parseP('12345'.repeat(6));
       inputHandler.parseP('\x1b[3;3H');
       inputHandler.parseP('\x1b[\'~');
@@ -137,7 +137,7 @@ describe('InputHandler', () => {
       bufferService.reset();
     });
     describe('reverseWraparound set', () => {
-      it('should not reverse outside of scroll margins', async () => {
+      it('should not reverse outside of scroll margins', () => {
         // prepare buffer content
         inputHandler.parseP('#####abcdefghijklmnopqrstuvwxy');
         assert.deepEqual(getLines(bufferService, 6), ['#####', 'abcde', 'fghij', 'klmno', 'pqrst', 'uvwxy']);
@@ -1913,6 +1913,92 @@ describe('InputHandler', () => {
       });
     });
   });
+
+  // issue #3362 and #2979
+  describe('EL/ED cursor at buffer.cols', () => {
+    beforeEach(() => {
+      bufferService.resize(10, 5);
+    });
+    describe('cursor should stay at cols / does not overflow', () => {
+      it('EL0', async () => {
+        await inputHandler.parseP('##########\x1b[0K');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['#'.repeat(10), '', '', '', '']);
+      });
+      it('EL1', async () => {
+        await inputHandler.parseP('##########\x1b[1K');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['', '', '', '', '']);
+      });
+      it('EL2', async () => {
+        await inputHandler.parseP('##########\x1b[2K');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['', '', '', '', '']);
+      });
+      it('ED0', async () => {
+        await inputHandler.parseP('##########\x1b[0J');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['#'.repeat(10), '', '', '', '']);
+      });
+      it('ED1', async () => {
+        await inputHandler.parseP('##########\x1b[1J');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['', '', '', '', '']);
+      });
+      it('ED2', async () => {
+        await inputHandler.parseP('##########\x1b[2J');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['', '', '', '', '']);
+      });
+      it('ED3', async () => {
+        await inputHandler.parseP('##########\x1b[3J');
+        assert.equal(bufferService.buffer.x, 10);
+        assert.deepEqual(getLines(bufferService), ['#'.repeat(10), '', '', '', '']);
+      });
+    });
+    describe('following sequence keeps working', () => {
+      // sequences to test (cursor related ones)
+      const SEQ = [
+        /* ICH */   '\x1b[10@',
+        /* SL */    '\x1b[10 @',
+        /* CUU */   '\x1b[10A',
+        /* SR */    '\x1b[10 A',
+        /* CUD */   '\x1b[10B',
+        /* CUF */   '\x1b[10C',
+        /* CUB */   '\x1b[10D',
+        /* CNL */   '\x1b[10E',
+        /* CPL */   '\x1b[10F',
+        /* CHA */   '\x1b[10G',
+        /* CUP */   '\x1b[10;10H',
+        /* CHT */   '\x1b[10I',
+        /* IL */    '\x1b[10L',
+        /* DL */    '\x1b[10M',
+        /* DCH */   '\x1b[10P',
+        /* SU */    '\x1b[10S',
+        /* SD */    '\x1b[10T',
+        /* ECH */   '\x1b[10X',
+        /* CBT */   '\x1b[10Z',
+        /* HPA */   '\x1b[10`',
+        /* HPR */   '\x1b[10a',
+        /* REP */   '\x1b[10b',
+        /* VPA */   '\x1b[10d',
+        /* VPR */   '\x1b[10e',
+        /* HVP */   '\x1b[10;10f',
+        /* TBC */   '\x1b[0g',
+        /* SCOSC */ '\x1b[s',
+        /* DECIC */ '\x1b[10\'}',
+        /* DECDC */ '\x1b[10\'~'
+      ];
+      it('cursor never advances beyond cols', async () => {
+        for (const seq of SEQ) {
+          await inputHandler.parseP('##########\x1b[2J' + seq);
+          assert.equal(bufferService.buffer.x <= bufferService.cols, true);
+          inputHandler.reset();
+          bufferService.reset();
+        }
+      });
+    });
+  });
 });
 
 

src/common/InputHandler.ts

@@ -1247,7 +1247,7 @@ export class InputHandler extends Disposable implements IInputHandler {
    * @vt: #P[Protection attributes are not supported.] CSI DECSED   "Selective Erase In Display"  "CSI ? Ps J"  "Currently the same as ED."
    */
   public eraseInDisplay(params: IParams): boolean {
-    this._restrictCursor();
+    this._restrictCursor(this._bufferService.cols);
     let j;
     switch (params.params[0]) {
       case 0:
@@ -1319,7 +1319,7 @@ export class InputHandler extends Disposable implements IInputHandler {
    * @vt: #P[Protection attributes are not supported.] CSI DECSEL   "Selective Erase In Line"  "CSI ? Ps K"  "Currently the same as EL."
    */
   public eraseInLine(params: IParams): boolean {
-    this._restrictCursor();
+    this._restrictCursor(this._bufferService.cols);
     switch (params.params[0]) {
       case 0:
         this._eraseInBufferLine(this._bufferService.buffer.y, this._bufferService.buffer.x, this._bufferService.cols);

src/common/TestUtils.test.ts

@@ -125,7 +125,7 @@ export class MockOptionsService implements IOptionsService {
   constructor(testOptions?: IPartialTerminalOptions) {
     if (testOptions) {
       for (const key of Object.keys(testOptions)) {
-        this.options[key] = (<any>testOptions)[key];
+        this.options[key] = (testOptions as any)[key];
       }
     }
   }

src/common/buffer/BufferRange.test.ts

@@ -16,10 +16,10 @@ describe('BufferRange', () => {
       assert.throws(() => getRangeLength(createRange(1, 3, 1, 1), 0));
     });
     it('should get range multiple lines', () => {
-      assert.equal(getRangeLength(createRange(1, 1, 4, 5), 5), 23);
+      assert.equal(getRangeLength(createRange(1, 1, 4, 5), 5), 24);
     });
     it('should get range for end line right after start line', () => {
-      assert.equal(getRangeLength(createRange(1, 1, 7, 2), 5), 11);
+      assert.equal(getRangeLength(createRange(1, 1, 7, 2), 5), 12);
     });
   });
 });

src/common/buffer/BufferRange.ts

@@ -5,12 +5,9 @@
 
 import { IBufferRange } from 'xterm';
 
-export function getRangeLength(range: IBufferRange, cols: number): number {
-  if (range.start.y === range.end.y) {
-    return range.end.x - range.start.x + 1;
-  }
+export function getRangeLength(range: IBufferRange, bufferCols: number): number {
   if (range.start.y > range.end.y) {
     throw new Error(`Buffer range end (${range.end.x}, ${range.end.y}) cannot be before start (${range.start.x}, ${range.start.y})`);
   }
-  return cols * (range.end.y - range.start.y - 1) + cols - range.start.x + range.end.x;
+  return bufferCols * (range.end.y - range.start.y) + (range.end.x - range.start.x + 1);
 }