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Document node v5.x exclusive ES2015 features #304

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11 changes: 6 additions & 5 deletions locale/en/docs/es6.md
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Expand Up @@ -33,21 +33,22 @@ All ECMAScript 2015 (ES6) features are split into three groups for **shipping**,
* [Symbols](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol)
* [Template strings](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/template_strings)
* [Arrow Functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions)
* [new.target](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new.target)
* [new.target](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new.target) [[2]](#ref-2)<span id="backref-2"></span>
* [Object.assign](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
* [Spread operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator)
* [Spread operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator) [[2]](#ref-2)<span id="backref-2"></span>

You can view a more detailed list, including a comparison with other engines, on the [compat-table](https://kangax.github.io/compat-table/es6/) project page.

<small id="ref-1">[[1](#backref-1)]: As of v8 3.31.74.1, block-scoped declarations are [intentionally implemented with a non-compliant limitation to strict mode code](https://groups.google.com/forum/#!topic/v8-users/3UXNCkAU8Es). Developers should be aware that this will change as v8 continues towards ES6 specification compliance.</small>
<small id="ref-1">[[1](#backref-1)]: As of v8 3.31.74.1, block-scoped declarations are [intentionally implemented with a non-compliant limitation to strict mode code](https://groups.google.com/forum/#!topic/v8-users/3UXNCkAU8Es). Developers should be aware that this will change as v8 continues towards ES6 specification compliance.</small><br>
<small id="ref-2">[[2](#backref-2)]: Only available in Node.js >= 5.x.x

## Which features are behind the --es_staging flag?

* [`Symbol.toStringTag`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol) (user-definable results for `Object.prototype.toString`, behind flag `--harmony_tostring`)
* [`Array.prototype.includes`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes) (determine whether
an array includes a certain element, behind flag `--harmony_array_includes`)
an array includes a certain element, behind flag `--harmony_array_includes`) [[2]](#ref-2)<span id="backref-2"></span>
* [Rest Parameters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters) (represent an indefinite number
of arguments as an array, behind flag `--harmony_rest_parameters`)
of arguments as an array, behind flag `--harmony_rest_parameters`) [[2]](#ref-2)<span id="backref-2"></span>

## Which features are in progress?

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