### Installation

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Install the pluralize library using npm, yarn, or bower.

```bash
npm install pluralize --save
yarn add pluralize
bower install pluralize --save
```

--------------------------------

### AMD Usage

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Import and use the pluralize library in an AMD environment.

```javascript
define(function (require, exports, module) {
  var pluralize = require('pluralize')
})
```

--------------------------------

### Browser Usage

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Include the pluralize library in an HTML file using a script tag.

```html
<script src="pluralize.js"></script>
```

--------------------------------

### Node.js Usage

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Import and use the pluralize library in a Node.js environment.

```javascript
var pluralize = require('pluralize')
```

--------------------------------

### Check if Singular or Plural

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Determine if a word is currently in its singular or plural form.

```javascript
pluralize.isPlural('test') //=> false
pluralize.isSingular('test') //=> true
```

--------------------------------

### Pluralize and Singularize Words

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Pluralize or singularize a word based on the count. Optionally include the count in the output.

```javascript
pluralize('test') //=> "tests"
pluralize('test', 0) //=> "tests"
pluralize('test', 1) //=> "test"
pluralize('test', 5) //=> "tests"
pluralize('test', 1, true) //=> "1 test"
pluralize('test', 5, true) //=> "5 tests"
pluralize('蘋果', 2, true) //=> "2 蘋果"
```

--------------------------------

### Add Custom Plural Rule

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Add a new rule to pluralize words based on a regular expression.

```javascript
pluralize.plural('regex') //=> "regexes"
pluralize.addPluralRule(/gex$/i, 'gexii')
pluralize.plural('regex') //=> "regexii"
```

--------------------------------

### Add Custom Singular Rule

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Add a new rule to singularize words based on a regular expression.

```javascript
pluralize.singular('singles') //=> "single"
pluralize.addSingularRule(/singles$/i, 'singular')
pluralize.singular('singles') //=> "singular"
```

--------------------------------

### Add Irregular Rule

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Define irregular word pairs for pluralization and singularization.

```javascript
pluralize.plural('irregular') //=> "irregulars"
pluralize.addIrregularRule('irregular', 'regular')
pluralize.plural('irregular') //=> "regular"
```

--------------------------------

### Add Uncountable Rule

Source: https://github.com/plurals/pluralize/blob/master/Readme.md

Specify words that should not be pluralized or singularized.

```javascript
pluralize.plural('paper') //=> "papers"
pluralize.addUncountableRule('paper')
pluralize.plural('paper') //=> "paper"
```

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