blasten/index.js

## index.js
var express = require('express');
var request = require('request');
var dom5 = require('dom5');
var argv = require('minimist')(process.argv.slice(2));
var app = express();
const PORT = process.env.PORT || argv.p || argv.port;

function removeNode(node) {
  if (node) {
    dom5.remove(node);
  }
}

app.use('/static', express.static('public'));

app.get('/', (req, res) => {
  res.set({
    'Content-Type': 'text/html',
    'Access-Control-Allow-Origin': '*',
    'Access-Control-Allow-Methods': 'GET,PUT,POST,DELETE'
  });

  request(req.query.url,
    (error, response, body) => {
      if (!error && response.statusCode == 200) {
        var document = dom5.parse(body);
        removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'navFrame')));
        removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'masthead')));
        removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'navButton')));
        removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'navClose')));
        removeNode(dom5.query(document, dom5.predicates.hasAttrValue('id', 'navscrim')));
        removeNode(dom5.query(document,
          dom5.predicates.AND(
            dom5.predicates.hasTagName('script'),
            dom5.predicates.hasAttrValue('custom-element', 'amp-install-serviceworker')
          )
        ));
        removeNode(dom5.query(document, dom5.predicates.hasTagName('amp-install-serviceworker')));
        res.send(dom5.serialize(document));
      } else {
        res.send('error');
      }
    });
});

if (PORT) {
  app.listen(PORT);
} else {
  app.listen();
}

## package.json
{
  "name": "amp-proxy",
  "description": "AMP proxy",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "dependencies": {
    "dom5": "^1.3.1",
    "express": "^4.14.0",
    "minimist": "^1.2.0",
    "request": "^2.72.0"
  },
  "engines": {
      "node" : "~5.6.0"
  },
  "devDependencies": {},
  "scripts": {
    "start": "node index.js"
  },
  "author": "",
  "license": "Google Inc."
}

## public[[slash]]remote.html
<!doctype html>
<head>
<meta charset="utf-8">
<meta name="robots" content="noindex">
<script>
(function() {
var v = location.search.substr(1);
if (!(/^\d+(-canary)?$/.test(v))) return;
var u = 'https://3p.ampproject.net/'+encodeURIComponent(v)+'/f.js';
document.write('<script'+' src="'+encodeURI(u)+'"><'+'/script>');
})();
</script>
</head>
<body style="margin:0">
<div id="c" style="position:absolute;top:0;left:0;bottom:0;right:0;">
  <script>
    draw3p(undefined,
      // List of expected amp-ad types.
      ['allowed-ad-type1', 'allowed-ad-type2'],
      // List of hostnames that are allowed to embed this change.
      // Please also use ALLOW-FROM X-Frame-Options to get security in
      // browsers that do not support location.ancestorOrigins.
      [
        'localhost',
        'polymer-pica.appspot.com',
        'polymer-pica-amp.appspot.com',
        'polymer-ampproxy.appspot.com',
        'polymer-news.appspot.com',
        'washingtonpost.com'
      ]);
  </script>
</div>
<script>if (window.docEndCallback) window.docEndCallback()</script>
</body>
</html>
	var express = require('express');
	var request = require('request');
	var dom5 = require('dom5');
	var argv = require('minimist')(process.argv.slice(2));
	var app = express();
	const PORT = process.env.PORT \|\| argv.p \|\| argv.port;

	function removeNode(node) {
	if (node) {
	dom5.remove(node);
	}
	}

	app.use('/static', express.static('public'));

	app.get('/', (req, res) => {
	res.set({
	'Content-Type': 'text/html',
	'Access-Control-Allow-Origin': '*',
	'Access-Control-Allow-Methods': 'GET,PUT,POST,DELETE'
	});

	request(req.query.url,
	(error, response, body) => {
	if (!error && response.statusCode == 200) {
	var document = dom5.parse(body);
	removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'navFrame')));
	removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'masthead')));
	removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'navButton')));
	removeNode(dom5.query(document, dom5.predicates.hasAttrValue('class', 'navClose')));
	removeNode(dom5.query(document, dom5.predicates.hasAttrValue('id', 'navscrim')));
	removeNode(dom5.query(document,
	dom5.predicates.AND(
	dom5.predicates.hasTagName('script'),
	dom5.predicates.hasAttrValue('custom-element', 'amp-install-serviceworker')
	)
	));
	removeNode(dom5.query(document, dom5.predicates.hasTagName('amp-install-serviceworker')));
	res.send(dom5.serialize(document));
	} else {
	res.send('error');
	}
	});
	});

	if (PORT) {
	app.listen(PORT);
	} else {
	app.listen();
	}
	{
	"name": "amp-proxy",
	"description": "AMP proxy",
	"version": "1.0.0",
	"description": "",
	"main": "index.js",
	"dependencies": {
	"dom5": "^1.3.1",
	"express": "^4.14.0",
	"minimist": "^1.2.0",
	"request": "^2.72.0"
	},
	"engines": {
	"node" : "~5.6.0"
	},
	"devDependencies": {},
	"scripts": {
	"start": "node index.js"
	},
	"author": "",
	"license": "Google Inc."
	}
	<!doctype html>
	<head>
	<meta charset="utf-8">
	<meta name="robots" content="noindex">
	<script>
	(function() {
	var v = location.search.substr(1);
	if (!(/^\d+(-canary)?$/.test(v))) return;
	var u = 'https://3p.ampproject.net/'+encodeURIComponent(v)+'/f.js';
	document.write('<script'+' src="'+encodeURI(u)+'"><'+'/script>');
	})();
	</script>
	</head>
	<body style="margin:0">
	<div id="c" style="position:absolute;top:0;left:0;bottom:0;right:0;">
	<script>
	draw3p(undefined,
	// List of expected amp-ad types.
	['allowed-ad-type1', 'allowed-ad-type2'],
	// List of hostnames that are allowed to embed this change.
	// Please also use ALLOW-FROM X-Frame-Options to get security in
	// browsers that do not support location.ancestorOrigins.
	[
	'localhost',
	'polymer-pica.appspot.com',
	'polymer-pica-amp.appspot.com',
	'polymer-ampproxy.appspot.com',
	'polymer-news.appspot.com',
	'washingtonpost.com'
	]);
	</script>
	</div>
	<script>if (window.docEndCallback) window.docEndCallback()</script>
	</body>
	</html>