## to-property-key-x
Converts argument to a value that can be used as a property key.
**Version**: 2.0.2
**Author**: Xotic750
**License**: [MIT](https://opensource.org/licenses/MIT)
**Copyright**: Xotic750
### `module.exports(argument)` ⇒ string \| symbol ⏏
This method Converts argument to a value that can be used as a property key.
**Kind**: Exported function
**Returns**: string \| symbol - The converted argument.
**Throws**:
- TypeError If argument is not a symbol and is not coercible to a string.
| Param | Type | Description |
| -------- | --------------- | ----------------------------------------- |
| argument | \* | The argument to onvert to a property key. |
**Example**
```js
import toPropertyKey from 'to-property-key-x';
console.log(toPropertyKey()); // 'undefined'
console.log(toPropertyKey(1)); // '1'
console.log(toPropertyKey(true)); // 'true'
const symbol = Symbol('a');
console.log(toPropertyKey(symbol)); // symbol
toPropertyKey(Object.create(null)); // TypeError
```