| // Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion JSExportedDartFunction get toJSCaptureThis |
| /// A callable JavaScript function that wraps this [Function] and captures the |
| /// `this` value when called. |
| /// |
| /// Identical to `toJS`, except the resulting [JSExportedDartFunction] will pass |
| /// `this` from JavaScript as the first argument to the converted [Function]. |
| /// Any [Function] that is converted with this member should take in an extra |
| /// parameter at the beginning of the parameter list to handle this. |
| /// |
| /// @description Check that it is a compile-time error if this function has any |
| /// named parameters. |
| /// @author sgrekhov22@gmail.com |
| /// @issue 61439 |
| |
| import 'dart:js_interop'; |
| |
| int foo(JSObject pThis, {int v = 0}) => v; |
| |
| int bar(JSObject pThis, {required int v}) => v; |
| |
| main() { |
| foo.toJSCaptureThis; |
| // ^ |
| // [analyzer] unspecified |
| // [web] unspecified |
| bar.toJSCaptureThis; |
| // ^ |
| // [analyzer] unspecified |
| // [web] unspecified |
| } |
