Proposal: Object gather in parameters lists

# Simo Costa (5 years ago)

This is a proposal to allow gathering one ore more specified arguments into one or more objects when a function is invoked. This proposal totally replace the previous: "faster this assignments in constructor functions". Simple example:

constructor(...this{par1, par2, par3}) {
  // constructor body
}

I'm not going to explain here all the details about this proposal. You can find them on GitHub following this link jfet97/tc39-proposal-object-gather where the proposal is widely discussed. There you will find all the nitty gritty details, with a suggestion for the transpilations.

Reasons:

Currently this type of gather is not allowed in JavaScript.
It allows us to directly map function arguments to object properties in a programmed order.
It provides a fast and unequivocal way to construct object using parameters that could be easily optimized by the engine.
It provides a fast and clean way to create common constructor functions.
Current solutions imply one or more of the following: changes to the function signature, useless objects creations, annoying identifiers repetitions or an additional function call.

The involvement of a TC39 champion would be really appreciated.

This is a proposal to allow gathering one ore more specified arguments into
one or more objects when a function is invoked.
This proposal totally replace the previous: "faster this assignments in
constructor functions".
Simple example:
```js
constructor(...this{par1, par2, par3}) {
  // constructor body
}
```

I'm not going to explain here all the details about this proposal. You can
find them on GitHub following this link
https://github.com/jfet97/tc39-proposal-object-gather where the proposal is
widely discussed. There you will find all the nitty gritty details, with a
suggestion for the transpilations.

Reasons:

* Currently this type of gather is not allowed in JavaScript.
* It allows us to directly map function arguments to object properties in a
programmed order.
* It provides a fast and unequivocal way to construct object using
parameters that could be easily optimized by the engine.
* It provides a fast and clean way to create common constructor functions.
* Current solutions imply one or more of the following: changes to the
function signature, useless objects creations, annoying identifiers
repetitions or an additional function call.


The involvement of a TC39 champion would be really appreciated.
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