Normalize newline characters (#40)

index.js

@@ -179,6 +179,7 @@ const exec = (string, columns, options = {}) => {
 module.exports = (string, columns, options) => {
 	return String(string)
 		.normalize()
+		.replace(/\r\n/g, '\n')
 		.split('\n')
 		.map(line => exec(line, columns, options))
 		.join('\n');

readme.md

@@ -35,7 +35,7 @@ Wrap words to the specified column width.
 
 Type: `string`
 
-String with ANSI escape codes. Like one styled by [`chalk`](https://github.com/chalk/chalk).
+String with ANSI escape codes. Like one styled by [`chalk`](https://github.com/chalk/chalk). Newline characters will be normalized to `\n`.
 
 #### columns
 

test.js

@@ -148,3 +148,8 @@ test('#27, does not remove spaces in line with ansi escapes when no trimming', t
 	t.is(wrapAnsi(chalk.bgGreen(`  ${chalk.black('OK')} `), 100, {trim: false}), chalk.bgGreen(`  ${chalk.black('OK')} `));
 	t.is(wrapAnsi(chalk.bgGreen(' hello '), 10, {hard: true, trim: false}), chalk.bgGreen(' hello '));
 });
+
+test('#39, normalizes newlines', t => {
+	t.is(wrapAnsi('foobar\r\nfoobar\r\nfoobar\nfoobar', 3, {hard: true}), 'foo\nbar\nfoo\nbar\nfoo\nbar\nfoo\nbar');
+	t.is(wrapAnsi('foo bar\r\nfoo bar\r\nfoo bar\nfoo bar', 3), 'foo\nbar\nfoo\nbar\nfoo\nbar\nfoo\nbar');
+});