Function

ticketSymbol

ticketSymbol(title: string, position: number): string
The symbol a lesson's ticket shows.
Parameters
- title: string
  The lesson title
- position: number
  The lesson's position within its module, from 1
Returns string
The first sound written between slashes, or the position
Remarks
Pronunciation lessons name their sound in phonetic notation between slashes, so the ticket carries that sound. A title that names none — a merger lesson, an exercise — falls back to the lesson's position in its module, which every lesson has.
Example
```
ticketSymbol("The Vowel Sound /ɪ/ (e corta)", 2); // "ɪ"
ticketSymbol("The weak-vowel merger", 5); // "5"
```
- Defined in lib/learner-achievements/learner-achievements.ts:85