MiniJsParser fails to compile []= operator #25053
Comments
|
I needed to have an anonymous JS class that worked like a map (dynamic keys), and this was my solution: @JS()
@anonymous
class JsObject<T> {
external factory JsObject();
external operator []=(String key, T value);
external operator [](String key);
}It works in Dartium, but the above stack trace is thrown when Dart2JS tries to compile the |
|
You are currently not allowed to specify operators for typed JS interop classes. We need to display an error message when this case is detected. |
|
The requirement this was meant to fulfil was that a JS api takes a JS Object with keys that are not fixed. The only other way I found to make it work was to use Is there another way? |
|
You can use import 'package:js/js.dart';
@JS()
@anonymous
class Description {
external factory Description({bool configurable, bool enumerable, value});
}
@JS('Object.defineProperty')
external void defineProperty(o, String prop, Description description);
void setValue(o, String key, value) =>
defineProperty(o, 'key', new Description(value: value));
@JS()
@anonymous
class A {}
void main() {
final a = new A();
setValue(a, 'key1', 1);
setValue(a, 'key2', true);
} |
|
Thanks @a14n! |
|
@a14n It doesn't work for me. For example the following code: import 'dart:html';
import 'package:js/js.dart';
void main() {
A a = new A();
setValue(a, 'key1', 1);
setValue(a, 'key2', true);
a['key3'] = 1;
a['key4'] = true;
print(stringify(a));
}
@JS()
@anonymous
class Description {
external factory Description({bool configurable, bool enumerable, value});
}
@JS('Object.defineProperty')
external void defineProperty(o, String prop, Description description);
setValue(o, String key, value) =>
defineProperty(o, key, new Description(value: value));
@JS()
@anonymous
class A {
external factory A();
external void operator []=(String key, value);
}
@JS('JSON.stringify')
external String stringify(Object json);prints: @jacob314 Is there any other way to do something like that, I'm now unable to js interop this case: |
|
setValue(o, String key, value, {bool enumerable: true}) =>
defineProperty(o, key, new Description(value: value, enumerable: enumerable)); |
|
@a14n thanks, this works for me |
|
So instead of something like this, plain and readable (JS example): I need to use some ugly workarounds with |
matanlurey
added
the
closed-obsolete
I'm on Dart VM version: 1.13.0 on "macos_x64"
The text was updated successfully, but these errors were encountered: