When we need to me destruction from array or object and change value then
we need make something like this
```js
let { first, second } = getSomeObject();
first = computeFirst(first);
// Or create temporary useless variable
const obj = getSomeObject();
const second = obj.second;
const first = computeFirst(obj.first);
```
I propose to make operator which will give ability to us to apply some
function to property inside destruction-syntax without mutable or temporary
variables
```js
const { first | computeFirst, second } = getSomeObject();
```
I think that syntax should be discussed, but it seems lie pipe-symbol is
well-known operator in bash and in AngularJS/Vue community.
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