Creating new object during destruction without duplicate code

💡 Ideas
1

When we create new object using existing one we use destruction to get properties and assign them to the new object

const {id, name} = user;
return {id, name};

Wouldn't it be nice if just take out the new object during destruction instead of assign them with a keyword like out

const {id, name} out viewModel = user;
return viewModel;

or shortly

return {id, name} out viewModel = user;

or even better if there is no declaration keyword

return {id, name} = user;
2

Sounds like you want a pick.

Note: link above largely discusses Object API and not so much syntax but on various occasions a syntax has also been proposed, ex: dotstructuring.

1 Like
3

By the way, this is already valid syntax. It will assign user.id and user.name to existing id and name variable in scope, then return user. In sloppy-mode it will create id and name as globals if they don't exist, in strict mode it will throw.

4

yeah it is valid syntax but it returns whole object and assignment works only in scope if they are not defined global scope. But I think it would be nice to get filtered keys with destruction as a new object, not the object on the right