Function wordsToNumber

wordsToNumber(text: string): number
Parse English number-words back into a number -- the reverse of numbersToWords. Tolerant of case, an optional 'and', and hyphens or spaces between words, even though numbersToWords only ever produces one specific combination of these.
Parameters
- text: string
  Number-words to parse, e.g. 'twelve thousand three hundred and forty-five'.
Returns number
The parsed number, or NaN for unparseable input -- matching how Number('garbage') signals failure for a numeric return type, since this library's usual string sentinel doesn't fit here.
Example
```
wordsToNumber('twenty-three'); // 23
wordsToNumber('one hundred and five'); // 105
wordsToNumber('twelve thousand three hundred and forty-five'); // 12345
wordsToNumber('not a number'); // NaN
```
- Defined in numbers/wordsToNumber.ts:29