Updated for Stryker

.gitignore

@@ -41,3 +41,4 @@ debugpy*.log
 pydevd*.log
 nodeLanguageServer/**
 nodeLanguageServer.*/**
++.stryker-tmp

package.json

@@ -3564,6 +3564,13 @@
         "@nteract/transforms": "^4.4.7",
         "@phosphor/widgets": "^1.9.3",
         "@sinonjs/fake-timers": "^6.0.1",
+        "@stryker-mutator/core": "^4.0.0-beta.4",
+        "@stryker-mutator/javascript-mutator": "^4.0.0-beta.4",
+        "@stryker-mutator/mocha-framework": "^4.0.0-beta.4",
+        "@stryker-mutator/mocha-runner": "^4.0.0-beta.4",
+        "@stryker-mutator/typescript": "^4.0.0-beta.4",
+        "@stryker-mutator/typescript-checker": "^4.0.0-beta.4",
+        "@stryker-mutator/webpack-transpiler": "^3.3.1",
         "@testing-library/react": "^9.4.0",
         "@types/ansi-regex": "^4.0.0",
         "@types/chai": "^4.1.2",

src/client/activation/languageServer/languageClientFactory.ts

@@ -40,7 +40,7 @@ export class DotNetDownloadedLanguageClientFactory implements ILanguageClientFac
             run: { command: serverModule, args: [], options },
             debug: { command: serverModule, args: ['--debug'], options }
         };
-        const vscodeLanguageClient = require('vscode-languageclient/node') as typeof import('vscode-languageclient/node');
+        const vscodeLanguageClient = require('vscode-languageclient/node'); // as typeof import('vscode-languageclient/node');
         return new vscodeLanguageClient.LanguageClient(
             PYTHON_LANGUAGE,
             languageClientName,
@@ -69,7 +69,7 @@ export class DotNetSimpleLanguageClientFactory implements ILanguageClientFactory
             run: { command: dotNetCommand, args: [serverModule], options },
             debug: { command: dotNetCommand, args: [serverModule, '--debug'], options }
         };
-        const vscodeLanguageClient = require('vscode-languageclient/node') as typeof import('vscode-languageclient/node');
+        const vscodeLanguageClient = require('vscode-languageclient/node'); // as typeof import('vscode-languageclient/node');
         return new vscodeLanguageClient.LanguageClient(
             PYTHON_LANGUAGE,
             languageClientName,

src/client/activation/node/languageClientFactory.ts

@@ -59,7 +59,7 @@ export class NodeLanguageClientFactory implements ILanguageClientFactory {
             }
         };
 
-        const vscodeLanguageClient = require('vscode-languageclient/node') as typeof import('vscode-languageclient/node');
+        const vscodeLanguageClient = require('vscode-languageclient/node'); // as typeof import('vscode-languageclient/node');
         return new vscodeLanguageClient.LanguageClient(
             PYTHON_LANGUAGE,
             languageClientName,

src/client/common/application/customEditorService.ts

@@ -59,7 +59,7 @@ export class CustomEditorService implements ICustomEditorService {
     // tslint:disable-next-line: no-any
     private async addCustomEditors(currentPackageJson: any) {
         // tslint:disable-next-line:no-require-imports no-var-requires
-        const _mergeWith = require('lodash/mergeWith') as typeof import('lodash/mergeWith');
+        const _mergeWith = require('lodash/mergeWith');// as typeof import('lodash/mergeWith');
         const improvedContents = await this.fileSystem.readFile(path.join(EXTENSION_ROOT_DIR, 'customEditor.json'));
         const improved = _mergeWith({ ...currentPackageJson }, JSON.parse(improvedContents), (l, r) => {
             if (Array.isArray(l) && Array.isArray(r)) {

src/client/common/editor.ts

@@ -65,7 +65,7 @@ export function getTextEditsFromPatch(before: string, patch: string): TextEdit[]
     // # Work around missing newline (http://bugs.python.org/issue2142).
     patch = patch.replace(/\\ No newline at end of file[\r\n]/, '');
     // tslint:disable-next-line:no-require-imports
-    const dmp = require('diff-match-patch') as typeof import('diff-match-patch');
+    const dmp = require('diff-match-patch');// as typeof import('diff-match-patch');
     const d = new dmp.diff_match_patch();
     const patches = patch_fromText.call(d, patch);
     if (!Array.isArray(patches) || patches.length === 0) {
@@ -123,7 +123,7 @@ export function getWorkspaceEditsFromPatch(
         patch = patch.replace(/\\ No newline at end of file[\r\n]/, '');
 
         // tslint:disable-next-line:no-require-imports
-        const dmp = require('diff-match-patch') as typeof import('diff-match-patch');
+        const dmp = require('diff-match-patch'); // as typeof import('diff-match-patch');
         const d = new dmp.diff_match_patch();
         const patches = patch_fromText.call(d, patch);
         if (!Array.isArray(patches) || patches.length === 0) {
@@ -161,7 +161,7 @@ export function getWorkspaceEditsFromPatch(
 }
 export function getTextEdits(before: string, after: string): TextEdit[] {
     // tslint:disable-next-line:no-require-imports
-    const dmp = require('diff-match-patch') as typeof import('diff-match-patch');
+    const dmp = require('diff-match-patch'); // as typeof import('diff-match-patch');
     const d = new dmp.diff_match_patch();
     const diffs = d.diff_main(before, after);
     return getTextEditsInternal(before, diffs).map((edit) => edit.apply());
@@ -192,7 +192,7 @@ function getTextEditsInternal(before: string, diffs: [number, string][], startLi
         }
 
         // tslint:disable-next-line:no-require-imports
-        const dmp = require('diff-match-patch') as typeof import('diff-match-patch');
+        const dmp = require('diff-match-patch'); // as typeof import('diff-match-patch');
         // tslint:disable-next-line:switch-default
         switch (diffs[i][0]) {
             case dmp.DIFF_DELETE:
@@ -319,7 +319,7 @@ function patch_fromText(textline: string): Patch[] {
         }
         textPointer += 1;
         // tslint:disable-next-line:no-require-imports
-        const dmp = require('diff-match-patch') as typeof import('diff-match-patch');
+        const dmp = require('diff-match-patch'); // as typeof import('diff-match-patch');
 
         while (textPointer < text.length) {
             const sign = text[textPointer].charAt(0);
@@ -375,7 +375,7 @@ export class EditorUtils implements IEditorUtils {
         patch = patch.replace(/\\ No newline at end of file[\r\n]/, '');
 
         // tslint:disable-next-line:no-require-imports
-        const dmp = require('diff-match-patch') as typeof import('diff-match-patch');
+        const dmp = require('diff-match-patch'); // as typeof import('diff-match-patch');
         const d = new dmp.diff_match_patch();
         const patches = patch_fromText.call(d, patch);
         if (!Array.isArray(patches) || patches.length === 0) {

src/client/common/nuget/azureBlobStoreNugetRepository.ts

@@ -116,6 +116,6 @@ interface IAZBlobStore {
 
 async function _getAZBlobStore(uri: string): Promise<IAZBlobStore> {
     // tslint:disable-next-line:no-require-imports
-    const az = (await import('azure-storage')) as typeof import('azure-storage');
+    const az = (await import('azure-storage'));// as typeof import('azure-storage');
     return az.createBlobServiceAnonymous(uri);
 }

src/client/common/platform/registry.ts

@@ -40,7 +40,7 @@ export function getArchitectureDisplayName(arch?: Architecture) {
 
 async function getRegistryValue(options: Options, name: string = '') {
     // tslint:disable-next-line:no-require-imports
-    const Registry = require('winreg') as typeof import('winreg');
+    const Registry = require('winreg');// as typeof import('winreg');
     return new Promise<string | undefined | null>((resolve) => {
         new Registry(options).get(name, (error, result) => {
             if (error || !result || typeof result.value !== 'string') {
@@ -53,7 +53,7 @@ async function getRegistryValue(options: Options, name: string = '') {
 
 async function getRegistryKeys(options: Options): Promise<string[]> {
     // tslint:disable-next-line:no-require-imports
-    const Registry = require('winreg') as typeof import('winreg');
+    const Registry = require('winreg');// as typeof import('winreg');
     // https://github.com/python/peps/blob/master/pep-0514.txt#L85
     return new Promise<string[]>((resolve) => {
         new Registry(options).keys((error, result) => {
@@ -76,7 +76,7 @@ function translateArchitecture(arch?: Architecture): RegistryArchitectures | und
 }
 function translateHive(hive: RegistryHive): string | undefined {
     // tslint:disable-next-line:no-require-imports
-    const Registry = require('winreg') as typeof import('winreg');
+    const Registry = require('winreg');// as typeof import('winreg');
     switch (hive) {
         case RegistryHive.HKCU:
             return Registry.HKCU;

src/client/common/utils/decorators.ts

@@ -11,7 +11,7 @@ import { getCacheKeyFromFunctionArgs, getGlobalCacheStore, InMemoryInterpreterSp
 import { TraceInfo, tracing } from './misc';
 
 // tslint:disable-next-line:no-require-imports no-var-requires
-const _debounce = require('lodash/debounce') as typeof import('lodash/debounce');
+const _debounce = require('lodash/debounce');// as typeof import('lodash/debounce');
 
 type VoidFunction = () => any;
 type AsyncVoidFunction = () => Promise<any>;

src/client/datascience/baseJupyterSession.ts

@@ -49,7 +49,7 @@ export abstract class BaseJupyterSession implements IJupyterSession {
     private get jupyterLab(): undefined | typeof import('@jupyterlab/services') {
         if (!this._jupyterLab) {
             // tslint:disable-next-line:no-require-imports
-            this._jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services'); // NOSONAR
+            this._jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services'); // NOSONAR
         }
         return this._jupyterLab;
     }

src/client/datascience/editor-integration/cellhashprovider.ts

@@ -28,7 +28,7 @@ import {
 } from '../types';
 
 // tslint:disable-next-line:no-require-imports no-var-requires
-const _escapeRegExp = require('lodash/escapeRegExp') as typeof import('lodash/escapeRegExp'); // NOSONAR
+const _escapeRegExp = require('lodash/escapeRegExp');// as typeof import('lodash/escapeRegExp'); // NOSONAR
 const LineNumberMatchRegex = /(;32m[ ->]*?)(\d+)/g;
 
 interface IRangedCellHash extends ICellHash {

src/client/datascience/interactive-common/interactiveBase.ts

@@ -1544,7 +1544,7 @@ export abstract class InteractiveBase extends WebviewPanelHost<IInteractiveWindo
     private handleKernelMessage(msg: KernelMessage.IIOPubMessage, _requestId: string) {
         // Only care about one sort of message, UpdateDisplayData
         // tslint:disable-next-line: no-require-imports
-        const jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services'); // NOSONAR
+        const jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services'); // NOSONAR
         if (jupyterLab.KernelMessage.isUpdateDisplayDataMsg(msg)) {
             this.handleUpdateDisplayData(msg as KernelMessage.IUpdateDisplayDataMsg);
         }

src/client/datascience/interactive-ipynb/nativeEditorProviderOld.ts

@@ -60,7 +60,7 @@ import { NativeEditorOldWebView } from './nativeEditorOldWebView';
 import { NativeEditorSynchronizer } from './nativeEditorSynchronizer';
 
 // tslint:disable-next-line:no-require-imports no-var-requires
-const debounce = require('lodash/debounce') as typeof import('lodash/debounce');
+const debounce = require('lodash/debounce');// as typeof import('lodash/debounce');
 
 @injectable()
 export class NativeEditorProviderOld extends NativeEditorProvider {

src/client/datascience/ipywidgets/ipyWidgetMessageDispatcher.ts

@@ -80,7 +80,7 @@ export class IPyWidgetMessageDispatcher implements IIPyWidgetMessageDispatcher {
         this.mirrorSend = this.mirrorSend.bind(this);
         this.onKernelSocketMessage = this.onKernelSocketMessage.bind(this);
         // tslint:disable-next-line: no-require-imports
-        const jupyterLabSerialize = require('@jupyterlab/services/lib/kernel/serialize') as typeof import('@jupyterlab/services/lib/kernel/serialize'); // NOSONAR
+        const jupyterLabSerialize = require('@jupyterlab/services/lib/kernel/serialize');// as typeof import('@jupyterlab/services/lib/kernel/serialize'); // NOSONAR
         this.deserialize = jupyterLabSerialize.deserialize;
     }
     public dispose() {
@@ -150,7 +150,7 @@ export class IPyWidgetMessageDispatcher implements IIPyWidgetMessageDispatcher {
         if (!this.jupyterLab) {
             // Lazy load jupyter lab for faster extension loading.
             // tslint:disable-next-line:no-require-imports
-            this.jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services'); // NOSONAR
+            this.jupyterLab = require('@jupyterlab/services'); // as typeof import('@jupyterlab/services'); // NOSONAR
         }
 
         // If we have any pending targets, register them now

src/client/datascience/jupyter/jupyterCellOutputMimeTypeTracker.ts

@@ -10,7 +10,7 @@ import { captureTelemetry, sendTelemetryEvent } from '../../telemetry';
 import { Telemetry } from '../constants';
 import { CellState, ICell, INotebookEditor, INotebookEditorProvider, INotebookExecutionLogger } from '../types';
 // tslint:disable-next-line:no-require-imports no-var-requires
-const flatten = require('lodash/flatten') as typeof import('lodash/flatten');
+const flatten = require('lodash/flatten');// as typeof import('lodash/flatten');
 
 @injectable()
 export class CellOutputMimeTypeTracker implements IExtensionSingleActivationService, INotebookExecutionLogger {

src/client/datascience/jupyter/jupyterNotebook.ts

@@ -958,7 +958,7 @@ export class JupyterNotebookBase implements INotebook {
         this.getLoggers().forEach((f) => (msg = f.preHandleIOPub ? f.preHandleIOPub(msg) : msg));
 
         // tslint:disable-next-line:no-require-imports
-        const jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services');
+        const jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services');
 
         // Create a trimming function. Only trim user output. Silent output requires the full thing
         const trimFunc = silent ? (s: string) => s : this.trimOutput.bind(this);
@@ -1057,7 +1057,7 @@ export class JupyterNotebookBase implements INotebook {
         msg: KernelMessage.IShellControlMessage
     ) {
         // tslint:disable-next-line:no-require-imports
-        const jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services');
+        const jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services');
 
         // Create a trimming function. Only trim user output. Silent output requires the full thing
         const trimFunc = silent ? (s: string) => s : this.trimOutput.bind(this);

src/client/datascience/jupyter/kernels/cellExecution.ts

@@ -34,7 +34,7 @@ import {
 } from '../../types';
 import { IKernel } from './types';
 // tslint:disable-next-line: no-var-requires no-require-imports
-const vscodeNotebookEnums = require('vscode') as typeof import('vscode-proposed');
+const vscodeNotebookEnums = require('vscode');// as typeof import('vscode-proposed');
 
 export class CellExecutionFactory {
     constructor(
@@ -310,7 +310,7 @@ export class CellExecution {
         loggers.forEach((f) => (msg = f.preHandleIOPub ? f.preHandleIOPub(msg) : msg));
 
         // tslint:disable-next-line:no-require-imports
-        const jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services');
+        const jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services');
 
         // Keep track of we need to send an update to VS code or not.
         let shouldUpdate = true;
@@ -511,7 +511,7 @@ export class CellExecution {
 
     private handleReply(clearState: RefBool, msg: KernelMessage.IShellControlMessage) {
         // tslint:disable-next-line:no-require-imports
-        const jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services');
+        const jupyterLab = require('@jupyterlab/services'); // as typeof import('@jupyterlab/services');
 
         if (jupyterLab.KernelMessage.isExecuteReplyMsg(msg)) {
             this.handleExecuteReply(msg, clearState);

src/client/datascience/jupyter/kernels/helpers.ts

@@ -7,7 +7,7 @@ import * as fastDeepEqual from 'fast-deep-equal';
 import { IJupyterKernelSpec } from '../../types';
 import { JupyterKernelSpec } from './jupyterKernelSpec';
 // tslint:disable-next-line: no-var-requires no-require-imports
-const NamedRegexp = require('named-js-regexp') as typeof import('named-js-regexp');
+const NamedRegexp = require('named-js-regexp');// as typeof import('named-js-regexp');
 
 // tslint:disable-next-line: no-require-imports
 import cloneDeep = require('lodash/cloneDeep');

src/client/datascience/jupyter/kernels/kernelExecution.ts

@@ -18,7 +18,7 @@ import { IDataScienceErrorHandler, INotebook, INotebookEditorProvider } from '..
 import { CellExecution, CellExecutionFactory } from './cellExecution';
 import type { IKernel, IKernelProvider, IKernelSelectionUsage } from './types';
 // tslint:disable-next-line: no-var-requires no-require-imports
-const vscodeNotebookEnums = require('vscode') as typeof import('vscode-proposed');
+const vscodeNotebookEnums = require('vscode');// as typeof import('vscode-proposed');
 
 /**
  * Separate class that deals just with kernel execution.
@@ -162,7 +162,7 @@ export class KernelExecution implements IDisposable {
 
     private onIoPubMessage(document: NotebookDocument, msg: KernelMessage.IIOPubMessage) {
         // tslint:disable-next-line:no-require-imports
-        const jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services');
+        const jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services');
         if (jupyterLab.KernelMessage.isUpdateDisplayDataMsg(msg) && handleUpdateDisplayDataMessage(msg, document)) {
             this.contentProvider.notifyChangesToDocument(document);
         }

src/client/datascience/jupyter/kernels/kernelService.ts

@@ -39,7 +39,7 @@ import { JupyterKernelSpec } from './jupyterKernelSpec';
 import { LiveKernelModel } from './types';
 
 // tslint:disable-next-line: no-var-requires no-require-imports
-const NamedRegexp = require('named-js-regexp') as typeof import('named-js-regexp');
+const NamedRegexp = require('named-js-regexp');// as typeof import('named-js-regexp');
 
 /**
  * Helper to ensure we can differentiate between two types in union types, keeping typing information.

src/client/datascience/jupyter/liveshare/guestJupyterNotebook.ts

@@ -39,7 +39,7 @@ export class GuestJupyterNotebook
     private get jupyterLab(): typeof import('@jupyterlab/services') {
         if (!this._jupyterLab) {
             // tslint:disable-next-line:no-require-imports
-            this._jupyterLab = require('@jupyterlab/services') as typeof import('@jupyterlab/services'); // NOSONAR
+            this._jupyterLab = require('@jupyterlab/services');// as typeof import('@jupyterlab/services'); // NOSONAR
         }
         return this._jupyterLab!;
     }

src/client/datascience/kernel-launcher/kernelFinder.ts

@@ -23,7 +23,7 @@ import { IDataScienceFileSystem, IJupyterKernelSpec } from '../types';
 import { getKernelInterpreter } from './helpers';
 import { IKernelFinder } from './types';
 // tslint:disable-next-line:no-require-imports no-var-requires
-const flatten = require('lodash/flatten') as typeof import('lodash/flatten');
+const flatten = require('lodash/flatten');// as typeof import('lodash/flatten');
 
 const winJupyterPath = path.join('AppData', 'Roaming', 'jupyter', 'kernels');
 const linuxJupyterPath = path.join('.local', 'share', 'jupyter', 'kernels');

src/client/datascience/notebook/contentProvider.ts

@@ -24,7 +24,7 @@ import { notebookModelToVSCNotebookData } from './helpers/helpers';
 import { NotebookEditorCompatibilitySupport } from './notebookEditorCompatibilitySupport';
 import { INotebookContentProvider } from './types';
 // tslint:disable-next-line: no-var-requires no-require-imports
-const vscodeNotebookEnums = require('vscode') as typeof import('vscode-proposed');
+const vscodeNotebookEnums = require('vscode');// as typeof import('vscode-proposed');
 
 /**
  * This class is responsible for reading a notebook file (ipynb or other files) and returning VS Code with the NotebookData.

src/client/datascience/notebook/helpers/executionHelpers.ts

@@ -10,7 +10,7 @@ import { NotebookCell, NotebookCellRunState, NotebookDocument } from 'vscode';
 import { createErrorOutput } from '../../../../datascience-ui/common/cellFactory';
 import { createIOutputFromCellOutputs, createVSCCellOutputsFromOutputs, translateErrorOutput } from './helpers';
 // tslint:disable-next-line: no-var-requires no-require-imports
-const vscodeNotebookEnums = require('vscode') as typeof import('vscode-proposed');
+const vscodeNotebookEnums = require('vscode');// as typeof import('vscode-proposed');
 
 /**
  * Updates the cell in notebook model as well as the notebook document.