@stdlib/assert/is-anagram/README.md

Standard assertion utilities.

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# isAnagram

> Test if a value is an [anagram][anagram].

<section class="usage">

## Usage

```javascript
var isAnagram = require( '@stdlib/assert/is-anagram' );
```

#### isAnagram( str, value )

Tests if a `value` is an [anagram][anagram].

```javascript
var str = 'I am a weakish speller';
var value = 'William Shakespeare';

var bool = isAnagram( str, value );
// returns true
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   The function does **not** address the presence of [diacritics][diacritics].
-   Only **alphanumeric** characters are considered.
-   Capitalization is **ignored**.
-   If provided a non-string for the first `argument`, the function throws an `Error`.
-   If provided a non-string for the second `argument`, the function returns `false`.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var isAnagram = require( '@stdlib/assert/is-anagram' );

var bool = isAnagram( 'I am a weakish speller', 'William Shakespeare' );
// returns true

bool = isAnagram( 'bat', 'tab' );
// returns true

bool = isAnagram( 'bat', 'TAB' );
// returns true

bool = isAnagram( 'bat', 't a b' );
// returns true

bool = isAnagram( 'bat 321', 'tab 123' );
// returns true

bool = isAnagram( 'bat', 'tabba' );
// returns false

bool = isAnagram( 'bat', 5 );
// returns false

bool = isAnagram( '123', 321 );
// returns false
```

</section>

<!-- /.examples -->

* * *

<section class="cli">

## CLI

<section class="usage">

### Usage

```text
Usage: is-anagram [options] [<string>] --str=<string>

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.
         --str string          Comparison string.
         --split sep           Delimiter for stdin data. Default: '/\\r?\\n/'.
```

</section>

<!-- /.usage -->

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

<section class="notes">

### Notes

-   If the split separator is a [regular expression][mdn-regexp], ensure that the `split` option is either properly escaped or enclosed in quotes.

    ```bash
    # Not escaped...
    $ echo -n $'baz\ntab' | is-anagram --str=zab --split /\r?\n/
    # Escaped...
    $ echo -n $'baz\ntab' | is-anagram --str=zab --split /\\r?\\n/
    ```

-   The implementation ignores trailing delimiters.

</section>

<!-- /.notes -->

<section class="examples">

### Examples

```bash
$ is-anagram baz --str=zab
true
```

To use as a [standard stream][standard-streams],

```bash
$ echo -n 'tab\nbaz' | is-anagram --str=bat
true
false
```

By default, when used as a [standard stream][standard-streams], the implementation assumes newline-delimited data. To specify an alternative delimiter, set the `split` option.

```bash
$ echo -n 'tab\tbaz' | is-anagram --str=bat --split '\t'
true
false
```

</section>

<!-- /.examples -->

</section>

<!-- /.cli -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/assert/is-alphagram`][@stdlib/assert/is-alphagram]</span><span class="delimiter">: </span><span class="description">test if a value is an alphagram.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="links">

[anagram]: https://en.wikipedia.org/wiki/Anagram

[diacritics]: https://en.wikipedia.org/wiki/Diacritic

[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams

[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

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

[@stdlib/assert/is-alphagram]: https://github.com/stdlib-js/assert/tree/main/is-alphagram

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

</section>

<!-- /.links -->