Stumbled upon this code:
const { operator } = this;
from https://github.com/ReactiveX/rxjs/blob/master/src/Observable.ts#L89
What does it mean?
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1 Answer
It's object destructuring. This
const { operator, other } = this;
is equivalent to
const operator = this.operator;
const other = this.other;
It's borrowed from ES6, which has the same feature.
3 Comments
Alexey Vagarenko
Is there any reason to not just write
const operator = this.operator;?
Nick H
Not really, and in this case I think it'd be more readable to do it the normal way. Maybe the author just wanted to play with new features!
Tony
@AlexeyVagarenko If you need to get properties from
this, you will need to write mutiple lines about fetch. Thereforce, ES6 offers destructuring is easy to write in one line.