| /** | 
| Check if the character represented by a given [Unicode code point](https://en.wikipedia.org/wiki/Code_point) is [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms). | 
|   | 
| @param codePoint - The [code point](https://en.wikipedia.org/wiki/Code_point) of a character. | 
|   | 
| @example | 
| ``` | 
| import isFullwidthCodePoint from 'is-fullwidth-code-point'; | 
|   | 
| isFullwidthCodePoint('谢'.codePointAt(0)); | 
| //=> true | 
|   | 
| isFullwidthCodePoint('a'.codePointAt(0)); | 
| //=> false | 
| ``` | 
| */ | 
| export default function isFullwidthCodePoint(codePoint: number): boolean; |