Function getFileExcerptIfPossible

src/utils.js:432–447

* @param {LessError} error error * @returns {string[]} file excerpt

(error)

 * @returns {string[]} file excerpt
 */
function getFileExcerptIfPossible(error) {
  if (typeof error.extract === "undefined") {
    return [];
  }

  const excerpt = error.extract.slice(0, 2);
  const column = Math.max(/** @type {number} */ (error.column) - 1, 0);

  if (typeof excerpt[0] === "undefined") {
    excerpt.shift();
  }

  excerpt.push(`${" ".repeat(column)}^`);

  return excerpt;
}

/**
 * @param {LessError} error error