Parse uuencoded attachments from a text message

uuencoded.js

// Install uue decoder:
//     npm install uue

var message =
    'This is a message with uuencoded attachment\n' +
    '\n' +
    'begin 644 cat.txt\n' +
    '#0V%T\n' +
    '`\n' +
    'end\n';

var uue = require('uue');
var attachments = [];

message = message.
// no mathcing past newlines in JS, need to remove these
replace(/\r?\n/g, '\u0000').
replace(/(?:^|\u0000)begin \d{3} ([^\u0000]+).*?\u0000`\u0000end(\u0000|$)/g, function(uuencoded, name) {
    uuencoded = uuencoded.replace(/\u0000/g, '\n');
    attachments.push({
        name: name,
        content: uue.decodeFile(uuencoded, name)
    });
    return '';
}).
// bring back removed newlines
replace(/\u0000/g, '\n');

console.log(message);
// This is a message with uuencoded attachment
console.log(attachments);
// [{filename: 'cat.txt', content: <Buffer 43 61 74>}]