do not suggest to mark constructor 'async'

Author: uhyo

src/compiler/checker.ts

@@ -23093,7 +23093,7 @@ namespace ts {
                         const span = getSpanOfTokenAtPosition(sourceFile, node.pos);
                         const diagnostic = createFileDiagnostic(sourceFile, span.start, span.length, Diagnostics.await_expression_is_only_allowed_within_an_async_function);
                         const func = getContainingFunction(node);
-                        if (func) {
+                        if (func && func.kind !== SyntaxKind.Constructor) {
                             Debug.assert((getFunctionFlags(func) & FunctionFlags.Async) === 0, "Enclosing function should never be an async function.");
                             const relatedInfo = createDiagnosticForNode(func, Diagnostics.Did_you_mean_to_mark_this_function_as_async);
                             addRelatedInfo(diagnostic, relatedInfo);
@@ -31603,7 +31603,7 @@ namespace ts {
                     if (!hasParseDiagnostics(sourceFile)) {
                         const diagnostic = createDiagnosticForNode(forInOrOfStatement.awaitModifier, Diagnostics.A_for_await_of_statement_is_only_allowed_within_an_async_function_or_async_generator);
                         const func = getContainingFunction(forInOrOfStatement);
-                        if (func) {
+                        if (func && func.kind !== SyntaxKind.Constructor) {
                             Debug.assert((getFunctionFlags(func) & FunctionFlags.Async) === 0, "Enclosing function should never be an async function.");
                             const relatedInfo = createDiagnosticForNode(func, Diagnostics.Did_you_mean_to_mark_this_function_as_async);
                             addRelatedInfo(diagnostic, relatedInfo);