use-xregexp.coffee

XRegExp = require('xregexp-all.js')
XRegExp.new = XRegExp.XRegExp

XRegExp.new('\\p{L}+').test('啊囉哈')

xregexp-all.sh

# download XRegExp 1.5.0
wget http://xregexp.com/xregexp-min.js

# download XRegExp unicode modules
wget http://xregexp.com/plugins/xregexp-unicode-base.js
wget http://xregexp.com/plugins/xregexp-unicode-categories.js
wget http://xregexp.com/plugins/xregexp-unicode-scripts.js
wget http://xregexp.com/plugins/xregexp-unicode-blocks.js

# cat all files into one. note, xregexp-min.js should be
# on the top. here lexically m is front of u, so we
# don't need bother it
cat xregexp-*.js > xregexp-tmp.js

# convert CRLF to LF
tr -d "\r" < xregexp-tmp.js > xregexp-all.js

# make XRegExp a nodejs module
echo '
XRegExp.new = XRegExp;
var root;
root = (typeof exports !== "undefined" && exports !== null) ? exports : this;
root.XRegExp = XRegExp;' >> xregexp-all.js

As of XRegExp v2.0.0, you can just include xregexp-all.js. You can also install it via npm.

I see, thanks!