Merge pull request #164 from sveltejs/gh-163

add sapper start task

src/cli/index.ts

@@ -1,3 +1,5 @@
+import * as path from 'path';
+import * as child_process from 'child_process';
 import mri from 'mri';
 import chalk from 'chalk';
 import help from './help.md';
@@ -28,7 +30,8 @@ const [cmd] = opts._;
 
 const start = Date.now();
 
-if (cmd === 'build') {
+switch (cmd) {
+	case 'build':
 		process.env.NODE_ENV = 'production';
 		process.env.SAPPER_DEST = opts._[1] || 'build';
 
@@ -40,7 +43,10 @@ if (cmd === 'build') {
 			.catch(err => {
 				console.error(err ? err.details || err.stack || err.message || err : 'Unknown error');
 			});
-} else if (cmd === 'export') {
+
+		break;
+
+	case 'export':
 		process.env.NODE_ENV = 'production';
 
 		const export_dir = opts._[1] || 'export';
@@ -54,10 +60,30 @@ if (cmd === 'build') {
 			.catch(err => {
 				console.error(err ? err.details || err.stack || err.message || err : 'Unknown error');
 			});
-} else if (cmd === 'dev') {
+
+		break;
+
+	case 'dev':
 		dev();
-} else if (cmd === 'upgrade') {
+		break;
+
+	case 'upgrade':
 		upgrade();
-} else {
+		break;
+
+	case 'start':
+		const dir = path.resolve(opts._[1] || 'build');
+
+		child_process.fork(`${dir}/server.js`, [], {
+			cwd: process.cwd(),
+			env: Object.assign({
+				NODE_ENV: 'production',
+				SAPPER_DEST: dir
+			}, process.env)
+		});
+
+		break;
+
+	default:
 		console.log(`unrecognized command ${cmd} — try \`sapper --help\` for more information`);
 }