Fix more node 12 typing errors

For #82514

src/vs/workbench/api/common/extHostDocuments.ts

@@ -12,6 +12,7 @@ import { ExtHostDocumentData, setWordDefinitionFor } from 'vs/workbench/api/comm
 import { ExtHostDocumentsAndEditors } from 'vs/workbench/api/common/extHostDocumentsAndEditors';
 import * as TypeConverters from 'vs/workbench/api/common/extHostTypeConverters';
 import * as vscode from 'vscode';
+import { assertIsDefined } from 'vs/base/common/types';
 
 export class ExtHostDocuments implements ExtHostDocumentsShape {
 
@@ -84,7 +85,7 @@ export class ExtHostDocuments implements ExtHostDocumentsShape {
 		if (!promise) {
 			promise = this._proxy.$tryOpenDocument(uri).then(() => {
 				this._documentLoader.delete(uri.toString());
-				return this._documentsAndEditors.getDocument(uri);
+				return assertIsDefined(this._documentsAndEditors.getDocument(uri));
 			}, err => {
 				this._documentLoader.delete(uri.toString());
 				return Promise.reject(err);

src/vs/workbench/api/node/extHostDebugService.ts

@@ -383,7 +383,7 @@ export class ExtHostDebugService implements IExtHostDebugService, ExtHostDebugSe
 	public async $substituteVariables(folderUri: UriComponents | undefined, config: IConfig): Promise<IConfig> {
 		if (!this._variableResolver) {
 			const [workspaceFolders, configProvider] = await Promise.all([this._workspaceService.getWorkspaceFolders2(), this._configurationService.getConfigProvider()]);
-			this._variableResolver = new ExtHostVariableResolverService(workspaceFolders || [], this._editorsService, configProvider);
+			this._variableResolver = new ExtHostVariableResolverService(workspaceFolders || [], this._editorsService, configProvider!);
 		}
 		let ws: IWorkspaceFolder | undefined;
 		const folder = await this.getFolder(folderUri);
@@ -783,7 +783,7 @@ export class ExtHostDebugService implements IExtHostDebugService, ExtHostDebugSe
 				}
 				return undefined;
 			}),
-			new Promise((resolve, reject) => {
+			new Promise<never>((resolve, reject) => {
 				const timeout = setTimeout(() => {
 					clearTimeout(timeout);
 					reject(new Error('timeout'));

src/vs/workbench/api/node/extHostExtensionService.ts

@@ -72,6 +72,7 @@ export class ExtHostExtensionService extends AbstractExtHostExtensionService {
 				return nativeProcessSend.apply(process, args);
 			}
 			mainThreadConsole.$logExtensionHostMessage(args[0]);
+			return false;
 		};
 	}