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23 lines
1.3 KiB
23 lines
1.3 KiB
<h1 id="es6features">Ecmascript E6 features</h1>
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<p>This section describes the small set of features Duktape borrows from the
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<a href="https://people.mozilla.org/~jorendorff/es6-draft.html">current ES6 draft</a>.
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These features are not fully compliant; the intent is to minimize custom features
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and to align with the coming ES6 specification.</p>
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<h2 id="es6-proto">Object.setPrototypeOf and Object.prototype.__proto__</h2>
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<p><a href="https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.setprototypeof">Object.setPrototypeOf</a>
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allows user to set the internal prototype of an object which is not supported in
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Ecmascript E5. The Ecmascript E6 draft also provides
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<a href="https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.__proto__">Object.prototype.__proto__</a>
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which is an accessor property (setter/getter) which provides the same functionality
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but is compatible with existing code base which has relied on a non-standard
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<code>__proto__</code> property for a while. Duktape does not support the
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<a href="https://people.mozilla.org/~jorendorff/es6-draft.html#sec-__proto___-property-names-in-object-initializers">__proto__ property name in an object initializer</a>.</p>
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<p>These custom features can be disabled with feature options.</p>
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<h2 id="es6-proxy">Proxy object (subset)</h2>
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<p>FIXME.</p>
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