3 files changed, 15 insertions, 0 deletions
diff --git a/src/qml/compiler/qv4codegen.cpp b/src/qml/compiler/qv4codegen.cpp
index 453963c1dd..6248348d8e 100644
--- a/src/qml/compiler/qv4codegen.cpp
+++ b/src/qml/compiler/qv4codegen.cpp
@@ -610,6 +610,8 @@ void Codegen::initializeAndDestructureBindingElement(AST::PatternElement *e, con
     if (hasError())
         return;
 
+    accept(e->typeAnnotation);
+
     if (e->initializer) {
         if (!baseRef.isValid()) {
             // assignment
@@ -885,6 +887,12 @@ bool Codegen::visit(ExportDeclaration *ast)
     return false;
 }
 
+bool Codegen::visit(TypeAnnotation *ast)
+{
+    throwSyntaxError(ast->firstSourceLocation(), QLatin1String("Type annotations are not supported (yet)."));
+    return false;
+}
+
 bool Codegen::visit(StatementList *)
 {
     Q_UNREACHABLE();
diff --git a/src/qml/compiler/qv4codegen_p.h b/src/qml/compiler/qv4codegen_p.h
index 51b821aafe..ef710b5648 100644
--- a/src/qml/compiler/qv4codegen_p.h
+++ b/src/qml/compiler/qv4codegen_p.h
@@ -593,6 +593,8 @@ protected:
 
     bool visit(AST::ExportDeclaration *ast) override;
 
+    bool visit(AST::TypeAnnotation *ast) override;
+
     // expressions
     bool visit(AST::Expression *ast) override;
     bool visit(AST::ArrayPattern *ast) override;
diff --git a/src/qml/compiler/qv4compilerscanfunctions.cpp b/src/qml/compiler/qv4compilerscanfunctions.cpp
index 416a0edee0..11da6605c3 100644
--- a/src/qml/compiler/qv4compilerscanfunctions.cpp
+++ b/src/qml/compiler/qv4compilerscanfunctions.cpp
@@ -679,6 +679,11 @@ bool ScanFunctions::enterFunction(Node *ast, const QString &name, FormalParamete
             _context->isArrowFunction = true;
         else if (expr->isGenerator)
             _context->isGenerator = true;
+
+        if (expr->typeAnnotation) {
+            _cg->throwSyntaxError(ast->firstSourceLocation(), QLatin1String("Type annotations are not supported (yet)."));
+            return false;
+        }
     }