reactjs - What does the at symbol (@) do in ES6 javascript? (ECMAScript 2015) -


i'm looking @ es6 code , don't understand @ symbol when placed in front of variable. closest thing find has private fields?

code looking @ redux library:

import react, { component } 'react'; import { bindactioncreators } 'redux'; import { connect } 'redux/react'; import counter '../components/counter'; import * counteractions '../actions/counteractions';  @connect(state => ({   counter: state.counter })) export default class counterapp extends component {   render() {     const { counter, dispatch } = this.props;     return (       <counter counter={counter}                {...bindactioncreators(counteractions, dispatch)} />     );   } }

here blog post found on topic: https://github.com/zenparsing/es-private-fields

in blog post examples in context of class - mean when symbol used within module?

it's decorator. it's proposal added ecmascript. there multiple es6 , es5 equivalent examples on: https://github.com/wycats/javascript-decorators

decorators dynamically alter functionality of function, method, or class without having directly use subclasses or change source code of function being decorated.

they commonly used control access, registration, annotation.


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