astro/packages/create-astro/src/index.ts

import fs from 'fs';
import path from 'path';
import { bold, cyan, gray, green, red } from 'kleur/colors';
import prompts from 'prompts';
import degit from 'degit';
import yargs from 'yargs-parser';
import { TEMPLATES } from './templates';
const args = yargs(process.argv);
prompts.override(args);

export function mkdirp(dir: string) {
	try {
		fs.mkdirSync(dir, { recursive: true });
	} catch (e) {
		if (e.code === 'EEXIST') return;
		throw e;
	}
}


const { version } = JSON.parse(fs.readFileSync(new URL('../package.json', import.meta.url), 'utf-8'));

export async function main() {
	console.log('\n' + bold('Welcome to Astro!') + gray(` (create-astro v${version})`));
	console.log(`If you encounter a problem, visit ${cyan('https://github.com/snowpack/astro/issues')} to search or file a new issue.\n`);
	
	console.log(green(`>`) + gray(` Prepare for liftoff.`));
	console.log(green(`>`) + gray(` Gathering mission details...`));

	const cwd = args['_'][2] || '.';
	if (fs.existsSync(cwd)) {
		if (fs.readdirSync(cwd).length > 0) {
			const response = await prompts({
				type: 'confirm',
				name: 'forceOverwrite',
				message: 'Directory not empty. Continue?',
				initial: false
			});
			if (!response.forceOverwrite) {
				process.exit(1);
			}
		}
	} else {
		mkdirp(cwd);
	}

	const options = /** @type {import('./types/internal').Options} */ (await prompts([
		{
			type: 'select',
			name: 'template',
			message: 'Which app template would you like to use?',
			choices: TEMPLATES
		},
	]));

	const emitter = degit(`snowpackjs/astro/examples/${options.template}`, {
		cache: false,
		force: true,
		verbose: false,
	});
	
	try {
		// emitter.on('info', info => { console.log(info.message) });
		await emitter.clone(cwd);
	} catch (err) {
		// degit is compiled, so the stacktrace is pretty noisy. Just report the message.
		console.error(red(err.message));
		process.exit(1);
	}

	console.log(bold(green('✔ Copied project files')));

	console.log('\nNext steps:');
	let i = 1;

	const relative = path.relative(process.cwd(), cwd);
	if (relative !== '') {
		console.log(`  ${i++}: ${bold(cyan(`cd ${relative}`))}`);
	}

	console.log(`  ${i++}: ${bold(cyan('npm install'))} (or pnpm install, yarn, etc)`);
	console.log(`  ${i++}: ${bold(cyan('git init && git add -A && git commit -m "Initial commit"'))} (optional step)`);
	console.log(`  ${i++}: ${bold(cyan('npm start'))} (or pnpm, yarn, etc)`);

	console.log(`\nTo close the dev server, hit ${bold(cyan('Ctrl-C'))}`);
	console.log('\nStuck? Visit us at https://astro.build/chat\n');
}