TypeStript 入门 - 07：装包和拆包 #

type Proxy<T> = {
	get(): T,
	set(value: T): void
}

type Proxify<T> = {
	[P in keyof T]: Proxy<T[P]>
}

let props = {
	name: 'pt',
	age: 11
}

function proxify<T>(obj: T): Proxify<T> {
	let result = {} as Proxify<T>;
	for (let key in obj) {
		let value = obj[key];
		result[key] = {
			get() {
				console.log("get:", value);
				return value
			},
			set: (newValue) => {
				console.log("set: oldValue=", value, ",newValue=", newValue);
				value = newValue
			}
		}
	}
	return result
}
//! 装包：将普通对象包装一层，让其通过get set 访问和设置
let proxpProps = proxify(props);
console.log(proxpProps.name.get());
console.log(proxpProps.name.set("xx"));

function unProxify<T>(proxpProps: Proxify<T>): T {
	let result = {} as T;
	for (let key in proxpProps) {
		let value = proxpProps[key];
		result[key] = value.get()
	}
	return result
}
//! 拆包：将包装一层的对象，还原成原来的对象
let proxy = unProxify(proxpProps)