emoji split in word wrap about tty-table HOT 2 CLOSED

// eslint-disable-next-line no-control-regex
const ansiMatcher = new RegExp("([^\u001B\u009B]*)([\u001B\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\u0007)|(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-ntqry=><~]))|$)", "g")

/**
 * split a unicode string into code points
 * @param {string} s - string with unicode
 * @return {Array<string>} - array of code points
 */
const splitUnicode = s => [...s]

/**
 * truncate a unicode string that may contain ansi and/or multi-column unicode characters
 * @param {string} s - string with unicode and/or multi-column unicode characters
 * @param {number} length - width in terminal char column
 * @return {string}
 */
Format.truncate = (s, length) => {
  let total = 0
  return s.replace(ansiMatcher, function (match, content, ansi) {
    if (total === length || 0) {
      // skip all visible content
      return ansi
    }
    let contentLength = Wcwidth(content)
    if (contentLength <= length - total) {
      // pass all visible content
      total += contentLength
      return content + ansi
    }
    // partial chunk
    let chars = splitUnicode(content)
    while (Wcwidth(chars.join("")) > length - total) {
      chars.pop()
    }
    content = chars.join("")
    // set total so the rest of content is skipped
    total = length
    return content + ansi
  })
}