# is-nan-x

**Repository Path**: ArkTSCentralRepository/is-nan-x

## Basic Information

- **Project Name**: is-nan-x
- **Description**: ES6-compliant shim for Number.isNaN - the global isNaN returns false positives.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-03-28
- **Last Updated**: 2026-03-28

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# is-nan-x
基于[is-nan-x](https://www.npmjs.com/package/is-nan-x)原库2.1.1版本进行适配

## Install
```sh
ohpm install is-nan-x
```

## Usage

ES6-compliant shim for Number.isNaN - the global isNaN returns false positives.

### `module.exports(value)` ⇒ <code>boolean</code> ⏏

This method determines whether the passed value is NaN and its type is
`Number`. It is a more robust version of the original, global isNaN().

**Kind**: Exported function  
**Returns**: <code>boolean</code> - `true` if the given value is NaN and its type is Number;
otherwise, `false`.

| Param | Type            | Description                     |
| ----- | --------------- | ------------------------------- |
| value | <code>\*</code> | The value to be tested for NaN. |

**Example**

```typescript
import numberIsNaN from 'is-nan-x';

console.log(numberIsNaN(NaN)); // true
console.log(numberIsNaN(Number.NaN)); // true
console.log(numberIsNaN(0 / 0)); // true

// e.g. these would have been true with global isNaN()
console.log(numberIsNaN('NaN')); // false
console.log(numberIsNaN(undefined)); // false
console.log(numberIsNaN(new Object())); // false
console.log(numberIsNaN('blabla')); // false

// These all return false
console.log(numberIsNaN(true));
console.log(numberIsNaN(null));
console.log(numberIsNaN(37));
console.log(numberIsNaN('37'));
console.log(numberIsNaN('37.37'));
console.log(numberIsNaN(''));
console.log(numberIsNaN(' '));
```