[英]How to pass a class instance through methods without calling a constructor
I have these two files: 我有这两个文件:
file1.js file1.js
On the first one I call the subscribe method of "Device" passing a class instance called "RemoteControl" 在第一个方法中,我通过一个名为“ RemoteControl”的类实例调用“设备”的订阅方法
import { RemoteControl } from '../lib/devices'
.
.
.
this.device = new Device()
this.device._subscribe('231',RemoteControl)
file2.js file2.js
On this file I have 在这个文件上
export class Device extends Service {
constructor () {
super()
this.valid_devices_list = {uuid: [], deviceClass: {}}
}
_discover() {
this.emit('found', new this.valid_devices_list.deviceClass('231'));
console.log('Emite')
}
}
_subscribe (uuid , deviceClass) {
//uuid must be a regex for all bluetooth devices of the same type.
this.valid_devices_list = {uuid, deviceClass}
this._discover()
}
The thing is that when I run this I get the error 事实是,当我运行它时,我得到了错误
this.valid_devices_list.deviceClass is not a constructor
this.valid_devices_list.deviceClass不是构造函数
So I don't really know how can I pass the class instance "RemoteControl" to the subscribe instance, then save it on an object and finally use it on the discover method and call the constructor there. 因此,我真的不知道如何将类实例“ RemoteControl”传递给订阅实例,然后将其保存在一个对象上,最后在Discover方法上使用它并在其中调用构造函数。
Any help on this? 有什么帮助吗? Thank you in advance!
先感谢您!
EDIT: 编辑:
devices.js devices.js
export class RemoteControl {
constructor (uuid) {
this.uuid = uuid
}
_get () {
//some stuff could be here
}
}
If RemoteControl
is an "instance", then you can do 如果
RemoteControl
是“实例”,则可以执行
var constructor = this.valid_devices_list.deviceClass.constructor;
this.emit('found', new constructor('231'));
or alternatively you can pass the constructor (depending on the non obvious semantics of your API): 或者,您可以传递构造函数(取决于API的非明显语义):
this.device._subscribe('231', RemoteControl.constructor)
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