code: function getFileExcerptIfPossible(lessErr) {
    try {
      const excerpt = lessErr.extract.slice(0, 2);
      const column = Math.max(lessErr.column - 1, 0);
  
      if (typeof excerpt[0] === 'undefined') {
        excerpt.shift();
      }
  
      excerpt.push(`${new Array(column).join(' ')}^`);
  
      return excerpt;
    } catch (unexpectedErr) {
      // If anything goes wrong here, we don't want any errors to be reported to the user
      return [];
    }
  }
docs: Tries to get an excerpt of the file where the error happened.
  Uses err.line and err.column.
  
  Returns an empty string if the excerpt could not be retrieved.
  
  @param {LessError} err
  @returns {Array<string>}