107 lines
2.6 KiB
Markdown
107 lines
2.6 KiB
Markdown
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@license Apache-2.0
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Copyright (c) 2018 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# Async Iterator Symbol
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> Async iterator [symbol][mdn-symbol] which specifies the default async iterator for an object.
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- Package usage documentation. -->
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<section class="usage">
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## Usage
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```javascript
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var AsyncIteratorSymbol = require( '@stdlib/symbol/async-iterator' );
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```
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#### AsyncIteratorSymbol
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Async iterator [`symbol`][mdn-symbol] which specifies the default async iterator for an object.
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```javascript
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var s = typeof AsyncIteratorSymbol;
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// e.g., returns 'symbol'
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```
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</section>
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<!-- /.usage -->
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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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## Notes
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- The [symbol][mdn-symbol] is only supported in environments which support [symbols][mdn-symbol] and async iterators. In non-supporting environments, the value is `null`.
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</section>
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<!-- /.notes -->
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<!-- Package usage examples. -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var AsyncIteratorSymbol = require( '@stdlib/symbol/async-iterator' );
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if ( AsyncIteratorSymbol === null ) {
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console.log( 'Environment does not support Symbol.asyncIterator.' );
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} else {
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console.log( 'Environment does support Symbol.asyncIterator.' );
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}
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```
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</section>
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<!-- /.examples -->
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<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="references">
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</section>
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<!-- /.references -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[mdn-symbol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol
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</section>
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<!-- /.links -->
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