dzharii/randcat.js

## randcat.js
// Usage:
//    node randcat.js -p 8765 -- starts http server
//    node randcat.js         -- generates bookmarklet
if (typeof process !== 'undefined' && process.exit)
(async () => {
    const [, , portK, portV] = process.argv;
    const mode = (portK === '-p' && portV) ? 'server' : 'bookmarklet';
    const fs = require('fs').promises;
    let cont = (await fs.readFile(__filename)).toString();
    cont = cont.replace(/^.+?(?=\(\(d\) => \{)/s, '');

    if (mode === 'server') {
        const http = require('http');

        console.warn(`Visit us at: http://localhost:${+portV}`);
        http.createServer(function (req, res) {
          res.write(
`
<html>
<body>
<script>
${cont}
</script>
</body>
</html>
`.trim());
          res.end();
        }).listen(+portV);
    } else {
        cont = cont.replace(/(?<!(?:function|typeof|const|let))\s+(?=(?:[^\'"]*[\'"][^\'"]*[\'"])*[^\'"]*$)/gs, '');
        console.log('javascript:' + cont);
        process.exit(0);
    }

})();
else
((d) => {

    function update() {
        fetch("https://api.giphy.com/v1/gifs/random?api_key=y8CpAcHAapCxnArZIrZHCkSktr8y3IcQ&tag=cat")
          .catch(err => console.error('Unable to fetch cats', err))
          .then(rsp => rsp.text())
          .catch(err => console.error('Unable to get cats response test', err))
          .then(txt => JSON.parse(txt))
          .catch(err => console.error('Unable to parse cats response json', err))
          .then(json => ['data', 'images', 'original', 'url'].reduce((a, n) => a ? a[n] : undefined, json))
          .then(url => {
              d.body.innerHTML = tmpl(url);
              const btnCatz = d.getElementById('catz');
              btnCatz.addEventListener('click', update);
          });
    }
    function tmpl(url) {
        return  [
        '<h1>Random Cats</h1>',
        '<button id="catz">More Please!</button>',
        '<div>',
         url ? '<img src="' + url+ '">' : '<p>Failed to load cats</p>',
        '</div>'
        ].join('');
    }
    d.body = d.createElement('body');
    update();
})(typeof document !== 'undefined' ? document : {});
	// Usage:
	// node randcat.js -p 8765 -- starts http server
	// node randcat.js -- generates bookmarklet
	if (typeof process !== 'undefined' && process.exit)
	(async () => {
	const [, , portK, portV] = process.argv;
	const mode = (portK === '-p' && portV) ? 'server' : 'bookmarklet';
	const fs = require('fs').promises;
	let cont = (await fs.readFile(__filename)).toString();
	cont = cont.replace(/^.+?(?=\(\(d\) => \{)/s, '');

	if (mode === 'server') {
	const http = require('http');

	console.warn(`Visit us at: http://localhost:${+portV}`);
	http.createServer(function (req, res) {
	res.write(
	`
	<html>
	<body>
	<script>
	${cont}
	</script>
	</body>
	</html>
	`.trim());
	res.end();
	}).listen(+portV);
	} else {
	cont = cont.replace(/(?<!(?:function\|typeof\|const\|let))\s+(?=(?:[^\'"][\'"][^\'"][\'"])[^\'"]$)/gs, '');
	console.log('javascript:' + cont);
	process.exit(0);
	}

	})();
	else
	((d) => {

	function update() {
	fetch("https://api.giphy.com/v1/gifs/random?api_key=y8CpAcHAapCxnArZIrZHCkSktr8y3IcQ&tag=cat")
	.catch(err => console.error('Unable to fetch cats', err))
	.then(rsp => rsp.text())
	.catch(err => console.error('Unable to get cats response test', err))
	.then(txt => JSON.parse(txt))
	.catch(err => console.error('Unable to parse cats response json', err))
	.then(json => ['data', 'images', 'original', 'url'].reduce((a, n) => a ? a[n] : undefined, json))
	.then(url => {
	d.body.innerHTML = tmpl(url);
	const btnCatz = d.getElementById('catz');
	btnCatz.addEventListener('click', update);
	});
	}
	function tmpl(url) {
	return [
	'<h1>Random Cats</h1>',
	'<button id="catz">More Please!</button>',
	'<div>',
	url ? '<img src="' + url+ '">' : '<p>Failed to load cats</p>',
	'</div>'
	].join('');
	}
	d.body = d.createElement('body');
	update();
	})(typeof document !== 'undefined' ? document : {});