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ES6 Proxy - 実用例ModuleBuilderでImmutableクラスをつくる
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import ModuleBuilder, { Handlers } from './ModuleBuilder'; | |
/** | |
* Module | |
*/ | |
class Datetime { | |
constructor(datetimeString) { | |
this._source = datetimeString; | |
this._datetime = this.to(datetimeString); | |
} | |
/** | |
* @param {String} datetimeString | |
* @return {Object} datetime | |
*/ | |
to(datetimeString) { | |
// 省略 | |
} | |
/** | |
* @return {Number} | |
*/ | |
year() { | |
return this._datetime.year; | |
} | |
// 以下略 | |
} | |
export default new ModuleBuilder().class(Datetime).handler(Handlers.Immutable).build(); |
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import Datetime from './Datetime'; | |
let datetime = new Datetime(1489324383); // Proxyオブジェクトが生成される | |
console.log(datetime.year()); // 2017 |
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