Function validateUserInput

validateUserInput(
    perseusRenderData: PerseusRenderer,
    userInputMap: UserInputMap,
    locale: string,
): PerseusScore | null
validate, meant for client-side validation using answerless Perseus data
Parameters
- perseusRenderData: PerseusRenderer
  the answerless Perseus data
- userInputMap: UserInputMap
  the user's input for each widget, mapped by ID
- locale: string
  string locale for math parsing ("de" 1.000,00 vs "en" 1,000.00)
Returns PerseusScore | null
an invalid "score" if there's invalid input, otherwise null
- Defined in perseus-score/src/validate.ts:24