Function splitIndexFrom

packages/effect/src/internal/configProvider.ts:677–694

(key: string)

}

const splitIndexFrom = (key: string): Option.Option<[string, number]> => {
  const match = key.match(STR_INDEX_REGEX)
  if (match !== null) {
    const matchedString = match[1]
    const matchedIndex = match[3]
    const optionalString = matchedString !== undefined && matchedString.length > 0 ?
      Option.some(matchedString) :
      Option.none()
    const optionalIndex = pipe(
      matchedIndex !== undefined && matchedIndex.length > 0 ?
        Option.some(matchedIndex) :
        Option.none(),
      Option.flatMap(parseInteger)
    )
    return Option.all([optionalString, optionalIndex])
  }
  return Option.none()
}

const parseInteger = (str: string): Option.Option<number> => {
  const parsedIndex = Number.parseInt(str)