Strict null check more search files

src/tsconfig.strictNullChecks.json

@@ -655,14 +655,18 @@
 		"./vs/workbench/services/part/common/partService.ts",
 		"./vs/workbench/services/scm/common/scm.ts",
 		"./vs/workbench/services/scm/common/scmService.ts",
+		"./vs/platform/search/test/common/replace.test.ts",
 		"./vs/workbench/services/search/common/searchHelpers.ts",
 		"./vs/workbench/services/search/node/fileSearchManager.ts",
 		"./vs/workbench/services/search/node/legacy/search.ts",
 		"./vs/workbench/services/search/node/ripgrepSearchUtils.ts",
+		"./vs/workbench/services/search/node/ripgrepTextSearchEngine.ts",
+		"./vs/workbench/services/search/test/node/ripgrepTextSearchEngine.test.ts",
 		"./vs/workbench/services/search/node/search.ts",
 		"./vs/workbench/services/search/node/searchHistoryService.ts",
 		"./vs/workbench/services/search/node/searchIpc.ts",
 		"./vs/workbench/services/search/node/textSearchManager.ts",
+		"./vs/workbench/services/search/test/node/textSearchManager.test.ts",
 		"./vs/workbench/services/textMate/electron-browser/TMGrammars.ts",
 		"./vs/workbench/services/textMate/electron-browser/TMHelper.ts",
 		"./vs/workbench/services/textMate/electron-browser/textMateService.ts",

src/vs/workbench/services/search/node/ripgrepTextSearchEngine.ts

@@ -257,7 +257,7 @@ export class RipgrepParser extends EventEmitter {
 		})
 			.filter(r => !!r);
 
-		return createTextSearchResult(uri, fullText, ranges, this.previewOptions);
+		return createTextSearchResult(uri, fullText, <Range[]>ranges, this.previewOptions);
 	}
 
 	private createTextSearchContext(data: IRgMatch, uri: URI): vscode.TextSearchContext[] {

src/vs/workbench/services/search/test/node/textSearchManager.test.ts

@@ -12,7 +12,7 @@ import * as vscode from 'vscode';
 
 suite('TextSearchManager', () => {
 	test('fixes encoding', async () => {
-		let correctEncoding: boolean;
+		let correctEncoding = false;
 		const provider: vscode.TextSearchProvider = {
 			provideTextSearchResults(query: vscode.TextSearchQuery, options: vscode.TextSearchOptions, progress: vscode.Progress<vscode.TextSearchResult>, token: vscode.CancellationToken): vscode.ProviderResult<vscode.TextSearchComplete> {
 				correctEncoding = options.encoding === 'windows-1252';