/** Used to match wrap detail comments. */
const reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/;

/**
 * Inserts wrapper `details` in a comment at the top of the `source` body.
 *
 * @private
 * @param {string} source The source to modify.
 * @returns {Array} details The details to insert.
 * @returns {string} Returns the modified source.
 */
function insertWrapDetails(source, details) {
  const length = details.length;
  if (!length) {
    return source;
  }
  const lastIndex = length - 1;
  details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
  details = details.join(length > 2 ? ', ' : ' ');
  return source.replace(reWrapComment, `{\n/* [wrapped with ${ details }] */\n`);
}

export default insertWrapDetails;