This is a method/getter decorator which is when applied to a method or a getter memoizes the result of the first call and returns it on subsequent calls.
As decorators are a part of future ES7 standard they can only be used with transpilers such as Babel.
Installation:
% npm install memoize-decorator
Example:
import memoize from 'memoize-decorator'
class Component {
@memoize
get expensiveValue() {
console.log('heavy computations')
return 42
}
}
let component = new Component()
component.expensiveValue // prints 'heavy computations', returns 42
component.expensiveValue // just returns 42