AK-21/Graphite-Industrial-Intelligence

1const tab = 9 /* `\t` */2const space = 32 /* ` ` */3 4/**5 * Remove initial and final spaces and tabs at the line breaks in `value`.6 * Does not trim initial and final spaces and tabs of the value itself.7 *8 * @param {string} value9 *   Value to trim.10 * @returns {string}11 *   Trimmed value.12 */13export function trimLines(value) {14  const source = String(value)15  const search = /\r?\n|\r/g16  let match = search.exec(source)17  let last = 018  /** @type {Array<string>} */19  const lines = []20 21  while (match) {22    lines.push(23      trimLine(source.slice(last, match.index), last > 0, true),24      match[0]25    )26 27    last = match.index + match[0].length28    match = search.exec(source)29  }30 31  lines.push(trimLine(source.slice(last), last > 0, false))32 33  return lines.join('')34}35 36/**37 * @param {string} value38 *   Line to trim.39 * @param {boolean} start40 *   Whether to trim the start of the line.41 * @param {boolean} end42 *   Whether to trim the end of the line.43 * @returns {string}44 *   Trimmed line.45 */46function trimLine(value, start, end) {47  let startIndex = 048  let endIndex = value.length49 50  if (start) {51    let code = value.codePointAt(startIndex)52 53    while (code === tab || code === space) {54      startIndex++55      code = value.codePointAt(startIndex)56    }57  }58 59  if (end) {60    let code = value.codePointAt(endIndex - 1)61 62    while (code === tab || code === space) {63      endIndex--64      code = value.codePointAt(endIndex - 1)65    }66  }67 68  return endIndex > startIndex ? value.slice(startIndex, endIndex) : ''69}70