Continuosly update alias for zeit.co's now

README.md

Run this script after deployment to update the alias.

• got is the only dev dependency
• Change the file and include your domain, and app name
• Set an environment variable called NOW_TOKEN. You take the token from https://zeit.co/account#api-tokens

alias.js

const got = require('got');

const DOMAIN = 'example.com';
const NOW_API_DOMAIN = 'https://api.zeit.co/now';
const DEPLOYMENT_NAME = 'myapp';
const OPTIONS = {
	headers: {
		Authorization: `Bearer ${process.env.NOW_TOKEN}`
	},
	json: true
};

console.log(`Getting old aliases for ${DOMAIN}`);
got(`${NOW_API_DOMAIN}/aliases`, OPTIONS)
.then(response => {
	const {aliases} = response.body;
	let aliasesForDomain = aliases.filter(a => a.alias === DOMAIN);
	console.log(`Deleting old aliases (${aliasesForDomain.length})...`);
	return Promise.all(aliasesForDomain.map(alias => {
		return got(`${NOW_API_DOMAIN}/aliases/${alias.uid}`, Object.assign({}, OPTIONS, {
			method: 'DELETE'
		}));
	}));
})
.then(() => {
	console.log(`Getting newest deployment with name ${DEPLOYMENT_NAME}...`);
	return got(`${NOW_API_DOMAIN}/deployments`, OPTIONS);
})
.then(response => {
	const {deployments} = response.body;
	const deploymentsForName = deployments.filter(d => d.name === DEPLOYMENT_NAME);
	const latestDeployment = deploymentsForName.sort((a, b) => parseInt(b.created, 10) - parseInt(a.created, 10))[0];
	console.log('Adding alias to newest deployment...');
	return got(`${NOW_API_DOMAIN}/deployments/${latestDeployment.uid}/aliases`, Object.assign({}, OPTIONS, {
		body: JSON.stringify({
			alias: DOMAIN
		}),
		headers: Object.assign({}, OPTIONS.headers, {
			'Content-Type': 'application/json'
		})
	}));
})
.then(() => {
	console.log('Added or replaced alias.');
})
.catch(err => {
	console.error(err);
});