function method
Send a dart callback to JS context.
Implementation
@override
JsValue function(Function(List argv) func) =>
wrap(js.JsFunction.withThis((self, [arg1, arg2, arg3, arg4, arg5]) {
List argv;
if (arg5 != null) {
argv = [arg1, arg2, arg3, arg4, arg5];
} else if (arg4 != null) {
argv = [arg1, arg2, arg3, arg4];
} else if (arg3 != null) {
argv = [arg1, arg2, arg3];
} else if (arg2 != null) {
argv = [arg1, arg2];
} else if (arg1 != null) {
argv = [arg1];
} else {
argv = [];
}
return jsValue(func(argv.map((e) => wrap(e, this)).toList()), this);
}), this);