Function pinyinToWadeGiles

pinyinToWadeGiles(pinyin: string, options?: { toneFormat?: ToneFormat }): string
Convert a pinyin syllable directly to Wade-Giles romanization.
Parameters
- pinyin: string
  A pinyin syllable (with or without tone number)
- options: { toneFormat?: ToneFormat } = {}
  Formatting options
Returns string
Wade-Giles romanization
Example
```
pinyinToWadeGiles('zhong1'); // "chung¹"
pinyinToWadeGiles('guo2', { toneFormat: 'number' }); // "kuo2"
pinyinToWadeGiles('bei3', { toneFormat: 'none' }); // "pei"
```
- Defined in converter.ts:218