Function parseNumberSkeletonFromString

packages/icu-skeleton-parser/number.ts:12–40

(
  skeleton: string
)

}

export function parseNumberSkeletonFromString(
  skeleton: string
): NumberSkeletonToken[] {
  if (skeleton.length === 0) {
    throw new Error('Number skeleton cannot be empty')
  }
  // Parse the skeleton
  const stringTokens = skeleton
    .split(WHITE_SPACE_REGEX)
    .filter(x => x.length > 0)

  const tokens: NumberSkeletonToken[] = []
  for (const stringToken of stringTokens) {
    let stemAndOptions = stringToken.split('/')
    if (stemAndOptions.length === 0) {
      throw new Error('Invalid number skeleton')
    }

    const [stem, ...options] = stemAndOptions
    for (const option of options) {
      if (option.length === 0) {
        throw new Error('Invalid number skeleton')
      }
    }

    tokens.push({stem, options})
  }
  return tokens
}

function icuUnitToEcma(unit: string): ExtendedNumberFormatOptions['unit'] {
  return unit.replace(/^(.*?)-/, '') as ExtendedNumberFormatOptions['unit']