npm package: @stdlib/complex-reviver
Description: Revive a JSON-serialized complex number.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
  </summary>
  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# reviveComplex

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Revive a JSON-serialized complex number.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/complex-reviver
```

</section>

<section class="usage">

## Usage

```javascript
var reviveComplex = require( '@stdlib/complex-reviver' );
```

#### reviveComplex( key, value )

Revives a JSON-serialized `complex` number.

```javascript
var parseJSON = require( '@stdlib/utils-parse-json' );

var str = '{"type":"Complex128","re":5,"im":3}';

var z = parseJSON( str, reviveComplex );
// returns <Complex128>
```

For details on the JSON serialization format, see [`Complex128`][@stdlib/complex/float64/ctor].

</section>

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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var Complex128 = require( '@stdlib/complex-float64-ctor' );
var parseJSON = require( '@stdlib/utils-parse-json' );
var reviveComplex = require( '@stdlib/complex-reviver' );

var z = new Complex128( 5.0, 3.0 );
var str = JSON.stringify( z );
// returns '{"type":"Complex128","re":5,"im":3}'

var w = parseJSON( str, reviveComplex );
if ( w instanceof Error ) {
    throw w;
}
var bool = ( w instanceof z.constructor );
// returns true

bool = ( w.re === z.re );
// returns true

bool = ( w.im === z.im );
// returns true
```

</section>

<!-- /.examples -->

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</section>

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* * *

## See Also

-   <span class="package-name">[`@stdlib/complex-float64/ctor`][@stdlib/complex/float64/ctor]</span><span class="delimiter">: </span><span class="description">128-bit complex number.</span>
-   <span class="package-name">[`@stdlib/complex-float32/ctor`][@stdlib/complex/float32/ctor]</span><span class="delimiter">: </span><span class="description">64-bit complex number.</span>
-   <span class="package-name">[`@stdlib/complex-float64/reviver`][@stdlib/complex/float64/reviver]</span><span class="delimiter">: </span><span class="description">revive a JSON-serialized 128-bit complex number.</span>
-   <span class="package-name">[`@stdlib/complex-float32/reviver`][@stdlib/complex/float32/reviver]</span><span class="delimiter">: </span><span class="description">revive a JSON-serialized 64-bit complex number.</span>

</section>

<!-- /.related -->

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<section class="main-repo" >

* * *

## Notice

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].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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[npm-image]: http://img.shields.io/npm/v/@stdlib/complex-reviver.svg
[npm-url]: https://npmjs.org/package/@stdlib/complex-reviver

[test-image]: https://github.com/stdlib-js/complex-reviver/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/complex-reviver/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/complex-reviver/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/complex-reviver?branch=main

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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/complex-reviver/tree/deno
[deno-readme]: https://github.com/stdlib-js/complex-reviver/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/complex-reviver/tree/umd
[umd-readme]: https://github.com/stdlib-js/complex-reviver/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/complex-reviver/tree/esm
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/complex-reviver/main/LICENSE

[@stdlib/complex/float64/ctor]: https://www.npmjs.com/package/@stdlib/complex-float64-ctor

<!-- <related-links> -->

[@stdlib/complex/float32/ctor]: https://www.npmjs.com/package/@stdlib/complex-float32-ctor

[@stdlib/complex/float64/reviver]: https://www.npmjs.com/package/@stdlib/complex-float64-reviver

[@stdlib/complex/float32/reviver]: https://www.npmjs.com/package/@stdlib/complex-float32-reviver

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