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- 'use strict';
- module.exports = function (str) {
- if (typeof str !== 'string') {
- throw new TypeError('Expected a string');
- }
- var newlines = (str.match(/(?:\r?\n)/g) || []);
- if (newlines.length === 0) {
- return null;
- }
- var crlf = newlines.filter(function (el) {
- return el === '\r\n';
- }).length;
- var lf = newlines.length - crlf;
- return crlf > lf ? '\r\n' : '\n';
- };
- module.exports.graceful = function (str) {
- return module.exports(str) || '\n';
- };
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