请问该库能实现把dart变量或者对象注入到JavaScript代码里？

[yukinaz]

就是有个Person dart对象 里面有age name属性，我想在JavaScript代码里面使用这个person对象。

[ekibun]

flutter没法反射。
可以揉一个wrapper：

jsScript:

(handler) => {
  function Person() {
    const opaque = handler["new"]();
    Object.defineProperty(this, "name", {
      get: () => handler["getName"](opaque),
      set: (val) => handler["setName"](opaque, val),
    });
  }
  this.Person = Person;
}

final setupPerson = await engine.evaluate(jsScript);
await setupPerson.invoke({
  "new" : () => Person(),
  "getName": (person) => person.name,
  "setName": (person, name) => person.name = name, 
});
setupPerson.free();

然后就可以在js里新建Person了

const psn = new Person();
psn.name = "name";

[yukinaz]

flutter没法反射。
可以揉一个wrapper：

jsScript:

(handler) => {
  function Person() {
    const opaque = handler["new"]();
    Object.defineProperty(this, "name", {
      get: () => handler["getName"](opaque),
      set: (val) => handler["setName"](opaque, val),
    });
  }
  this.Person = Person;
}

final setupPerson = await engine.evaluate(jsScript);
await setupPerson.invoke({
  "new" : () => Person(),
  "getName": (person) => person.name,
  "setName": (person, name) => person.name = name, 
});
setupPerson.free();

然后就可以在js里新建Person了

const psn = new Person();
psn.name = "name";

呃，可能我没说清楚，我的意思是把dart代码里的Person对象实例设置到JavaScript代码的全局变量，然后可以在JavaScript代码里头使用这个Person对象，访问它的属性跟方法。

[ekibun]

差不多的，还是得在dart里写wrapper：

jsScript:

(obj, handler) => {
  Object.defineProperty(obj, "name", {
    get: () => handler["getName"](obj),
    set: (val) => handler["setName"](obj, val),
  });
  this.person = obj;
}

dart:

final setupPerson = await engine.evaluate(jsScript);
final person = Person();
await setupPerson.invoke([
  person,
  {
    "new" : () => Person(),
    "getName": (person) => person.name,
    "setName": (person, name) => person.name = name, 
  }
]);
setupPerson.free();

[liruohrh]

差不多的，还是得在dart里写wrapper：

jsScript:

(obj, handler) => {
  Object.defineProperty(obj, "name", {
    get: () => handler["getName"](obj),
    set: (val) => handler["setName"](obj, val),
  });
  this.person = obj;
}

dart:

final setupPerson = await engine.evaluate(jsScript);
final person = Person();
await setupPerson.invoke([
  person,
  {
    "new" : () => Person(),
    "getName": (person) => person.name,
    "setName": (person, name) => person.name = name, 
  }
]);
setupPerson.free();

感觉直接给globalThis设置属性更简单，这flutter_qjs里，Dart的Map就是Js的Object。

final person = Person();

final setToGlobalObject = await engine.evaluate("(key, val) => { this[key] = val; }");
await (setToGlobalObject as JSInvokable).invoke([
      "person",
      {
          "getName": person.getName,
          "setName":  person.setName
      }
]);