Dob
Dob is a tool for monitoring object changes. Using Proxy. Online Docs.
Examples
There are some demo on fiddle. Here's the simplest:
import { observable, observe } from "dob";
const obj = observable({ a: 1 });
observe(() => {
console.log("obj.a has changed to", obj.a);
}); // <· obj.a has changed to 1
obj.a = 2; // <· obj.a has changed to 2You can enjoy the benefits of proxy, for example obj.a = { b: 5 } is effective.
Use in react component
import { Action, observable, combineStores, inject } from "dob";
import { Connect } from "dob-react";
@observable
export class UserStore {
name = "bob";
}
export class UserAction {
@inject(UserStore) userStore: UserStore;
@Action
setName() {
this.userStore.name = "lucy";
}
}
@Connect(
combineStores({
UserStore,
UserAction
})
)
class App extends React.Component {
render() {
return (
<span onClick={this.props.UserAction.setName}>
{this.props.UserStore.name}
</span>
);
}
}Use
injectto pick stores in action, do notnew UserStore(), it's terrible for later maintenance.
Use in react project
import { Action, observable, combineStores, inject } from "dob";
import { Provider, Connect } from "dob-react";
@observable
export class UserStore {
name = "bob";
}
export class UserAction {
@inject(UserStore) userStore: UserStore;
@Action
setName() {
this.userStore.name = "lucy";
}
}
@Connect
class App extends React.Component {
render() {
return (
<span onClick={this.props.UserAction.setName}>
{this.props.UserStore.name}
</span>
);
}
}
ReactDOM.render(
<Provider
{...combineStores({
UserStore,
UserAction
})}
>
<App />
</Provider>,
document.getElementById("react-dom")
);Project Examples
- dob-react simple example
- dob-react hackernews
- dob-react todoMVC
- dob-react complex online web editor
- dob-redux todoMVC
Ecosystem
- dob-react - Connect dob to react! Here is a basic demo, and here is a demo with fractal. Quick start.
- dob-react-devtools - Devtools for dob-react, with action and ui two way binding.
- dob-redux - You can use both dob and Redux by using it! Enjoy the type and convenience of dob, and the ecology of Redux.
Communication
Talk to us about dob using DingDing.
Note
Dependency injection does not support circular references
Do not allow circular dependencies between store and action, It's impossible to do like this:
class A {
@inject(B) b;
}
class B {
@inject(A) a;
}Do not deconstruct to the last level on dynamic object
const obj = observable({ a: 1 });
// good
obj.a = 5;
// bad
let { a } = obj;
a = 5;