Test if a value is iterator-like.
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> Test if a value is [iterator][mdn-iterator-protocol]-like.
``bash`
npm install @stdlib/assert-is-iterator-like
`javascript`
var isIteratorLike = require( '@stdlib/assert-is-iterator-like' );
#### isIteratorLike( value )
Tests if a value is [iterator][mdn-iterator-protocol]-like.
`javascript
var obj = {
'next': function noop() {}
};
var bool = isIteratorLike( obj );
// returns true
bool = isIteratorLike( {} );
// returns false
`
- An [iterator protocol-compliant object][mdn-iterator-protocol] is an object having a next method following the [iterator protocol][mdn-iterator-protocol].
- As full [iterator][mdn-iterator-protocol] compliance is impossible to achieve without evaluating an [iterator][mdn-iterator-protocol], this function checks only for interface compliance.
`javascript
var noop = require( '@stdlib/utils-noop' );
var isIteratorLike = require( '@stdlib/assert-is-iterator-like' );
var obj = {
'next': noop
};
var bool = isIteratorLike( obj );
// returns true
bool = isIteratorLike( {} );
// returns false
bool = isIteratorLike( [] );
// returns false
bool = isIteratorLike( null );
// returns false
`
*
- [@stdlib/assert-is-iterable-like][@stdlib/assert/is-iterable-like]: test if a value is iterable-like.
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
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Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[stdlib]: https://github.com/stdlib-js/stdlib
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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/assert-is-iterator-like/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-iterator-like/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-iterator-like/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-iterator-like/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-iterator-like/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-iterator-like/blob/esm/README.md
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-iterator-like/main/LICENSE
[mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol
[@stdlib/assert/is-iterable-like]: https://www.npmjs.com/package/@stdlib/assert-is-iterable-like