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) {
	  var length = details.length,
	      lastIndex = length - 1;

	  details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
	  details = details.join(length > 2 ? ', ' : ' ');
	  return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
	}