Debug: Terminal script for pretty cookie output.

cookie.js

#!/usr/bin/env node

var cookie = process.argv[2];

if (!cookie) {
  console.log('Usage: $ cookie \'key1=value; key2=value; keyN=value;)\'');
  process.exit(1);
}

var parts = decodeURIComponent(cookie).match(/(\w+)=([^;]+)/g);
var output;

console.log('\n');

if (parts) {
  output = parts.reduce(function (acc, current, i) {
    var item = current.split('=');
    var key = item[0];
    var value = item[1];

    // Paranoia check.
    if (acc[key]) {
      throw key + ' already matched once';
    }

    try {
      // May already be a string
      value = JSON.parse(value);
    } catch (ex) {
      // Guess that any value containing a `{` was invalid JSON. Otherwise
      // the value is probably a plain string/number.
      if (value.indexOf('{') > -1) {
        console.error('Error for `' + key + '`:', ex.message);
      }
    }

    acc[key] = value;

    return acc;
  }, {});

} else {
  throw 'Argument is not a cookie.';
}

console.log(JSON.stringify(output, null, 2));
console.log('\n');