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Cascade Operator #14

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22 changes: 19 additions & 3 deletions proposal-template.md
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@@ -1,16 +1,32 @@
# ECMAScript proposal: @Name
# ECMAScript proposal: Cascade Operator
- [Motivation](#motivation)
- [High-level API](#high-level-api)
- [FAQ](#faq)

## Motivation

Proposal motivation
If i want change some properties inside existed object it will be wieard:

```js
const user = { name: "user", password: "password", likes: 0, friends: [...] };

const updatedUser = {
...user,
friends: user.friends.concat(newFriend),
likes: user.likes + 1,
}
```

I propose Dart-like Cascade Operator which will be more declarative than previous object update

## High-level API

```js
// example code
const user = { name: "user", password: "password", likes: 0, friends: [...] };

const updatedUser = user
..friends.concat(newUsser)
..likes += 1;
```

### FAQ
Expand Down