Update typescript to 3.7 (microsoft#8396)

DonJayamanne · web-flow · commit 96d19a5ea965 · 2019-11-06T09:03:21.000-08:00
* Update typescript to 3.7

* Fix compiler issues
diff --git a/news/3 Code Health/8395.md b/news/3 Code Health/8395.md
@@ -0,0 +1 @@
+Update TypeScript to `3.7`.
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -2896,7 +2896,7 @@
         "tslint-microsoft-contrib": "^5.0.3",
         "typed-react-markdown": "^0.1.0",
         "typemoq": "^2.1.0",
-        "typescript": "^3.6.4",
+        "typescript": "^3.7.2",
         "typescript-formatter": "^7.1.0",
         "unicode-properties": "1.1.0",
         "url-loader": "^1.1.2",
diff --git a/src/client/datascience/jupyter/notebookStarter.ts b/src/client/datascience/jupyter/notebookStarter.ts
@@ -74,7 +74,7 @@ export class NotebookStarter implements Disposable {
 
             // Then use this to launch our notebook process.
             const stopWatch = new StopWatch();
-            const launchResult = await notebookCommand.command!.execObservable(args, { throwOnStdErr: false, encoding: 'utf8', token: cancelToken });
+            const launchResult = await notebookCommand.command!.execObservable(args as string[], { throwOnStdErr: false, encoding: 'utf8', token: cancelToken });
 
             // Watch for premature exits
             if (launchResult.proc) {
diff --git a/src/client/extension.ts b/src/client/extension.ts
@@ -353,7 +353,7 @@ async function getActivationTelemetryProps(serviceContainer: IServiceContainer):
     const preferredWorkspaceInterpreter = getPreferredWorkspaceInterpreter(mainWorkspaceUri, serviceContainer);
     const usingGlobalInterpreter = isUsingGlobalInterpreterInWorkspace(settings.pythonPath, serviceContainer);
     const usingAutoSelectedWorkspaceInterpreter = preferredWorkspaceInterpreter ? settings.pythonPath === getPreferredWorkspaceInterpreter(mainWorkspaceUri, serviceContainer) : false;
-    const hasPython3 = interpreters
+    const hasPython3 = interpreters!
         .filter(item => item && item.version ? item.version.major === 3 : false)
         .length > 0;
 
diff --git a/src/client/interpreter/locators/services/baseVirtualEnvService.ts b/src/client/interpreter/locators/services/baseVirtualEnvService.ts
@@ -6,7 +6,7 @@ import { Uri } from 'vscode';
 import { traceError } from '../../../common/logger';
 import { IFileSystem, IPlatformService } from '../../../common/platform/types';
 import { IServiceContainer } from '../../../ioc/types';
-import { IInterpreterHelper, IVirtualEnvironmentsSearchPathProvider, PythonInterpreter } from '../../contracts';
+import { IInterpreterHelper, InterpreterType, IVirtualEnvironmentsSearchPathProvider, PythonInterpreter } from '../../contracts';
 import { IVirtualEnvironmentManager } from '../../virtualEnvs/types';
 import { lookForInterpretersInDirectory } from '../helpers';
 import { CacheableLocatorService } from './cacheableLocatorService';
@@ -82,7 +82,7 @@ export class BaseVirtualEnvService extends CacheableLocatorService {
                 return {
                     ...(details as PythonInterpreter),
                     envName: virtualEnvName,
-                    type: type
+                    type: type! as InterpreterType
                 };
             });
     }
diff --git a/src/client/interpreter/locators/services/windowsRegistryService.ts b/src/client/interpreter/locators/services/windowsRegistryService.ts
@@ -120,7 +120,7 @@ export class WindowsRegistryService extends CacheableLocatorService {
                     this.registry.getValue(tagKey, hive, arch, 'SysVersion'),
                     this.getCompanyDisplayName(companyKey, hive, arch)
                 ]).then(([installedPath, executablePath, version, companyDisplayName]) => {
-                    companyDisplayName = AnacondaCompanyNames.indexOf(companyDisplayName) === -1 ? companyDisplayName : AnacondaCompanyName;
+                    companyDisplayName = AnacondaCompanyNames.indexOf(companyDisplayName!) === -1 ? companyDisplayName : AnacondaCompanyName;
                     // tslint:disable-next-line:prefer-type-cast no-object-literal-type-assertion
                     return { installPath: installedPath, executablePath, version, companyDisplayName } as InterpreterInformation;
                 });
