Only return single ts-ignore action if there are multiple errors on one line

Fixes #97867

extensions/typescript-language-features/src/features/quickFix.ts

@@ -17,6 +17,7 @@ import { TelemetryReporter } from '../utils/telemetry';
 import * as typeConverters from '../utils/typeConverters';
 import { DiagnosticsManager } from './diagnostics';
 import FileConfigurationManager from './fileConfigurationManager';
+import { equals } from '../utils/objects';
 
 const localize = nls.loadMessageBundle();
 
@@ -147,6 +148,11 @@ class CodeActionSet {
 	}
 
 	public addAction(action: VsCodeCodeAction) {
+		for (const existing of this._actions) {
+			if (action.tsAction.fixName === existing.tsAction.fixName && equals(action.edit, existing.edit)) {
+				this._actions.delete(existing);
+			}
+		}
 		this._actions.add(action);
 	}
 

extensions/typescript-language-features/src/test/quickFix.test.ts

@@ -87,6 +87,23 @@ suite('TypeScript Quick Fix', () => {
 			`foo;`
 		));
 	});
+
+	test('Only a single ts-ignore should be returned if there are multiple errors on one line #98274', async () => {
+		const testDocumentUri = workspaceFile('foojs.js');
+		const editor = await createTestEditor(testDocumentUri,
+			`//@ts-check`,
+			`const a = require('./bla');`);
+
+		await wait(3000);
+
+		const fixes = await vscode.commands.executeCommand<vscode.CodeAction[]>('vscode.executeCodeActionProvider',
+			testDocumentUri,
+			editor.document.lineAt(1).range
+		);
+
+		const ignoreFixes = fixes?.filter(x => x.title === 'Ignore this error message');
+		assert.strictEqual(ignoreFixes?.length, 1);
+	});
 });