Function normalizeFullWidthDigits

src/utils/stringUtils.ts:72–76

(input: string)

 * Useful for accepting input from Japanese/CJK IMEs.
 */
export function normalizeFullWidthDigits(input: string): string {
  return input.replace(/[０-９]/g, ch =>
    String.fromCharCode(ch.charCodeAt(0) - 0xfee0),
  )
}

/**
 * Normalize full-width (zenkaku) space to half-width space.