add a CLI

bin

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+require('./dist/cli.js');

package.json

@@ -1,29 +1,35 @@
 {
-  "name": "svelte-upgrade",
+  "name": "@sveltejs/upgrade",
   "description": "Upgrade Svelte templates",
   "version": "1.0.0",
   "repository": "sveltejs/svelte-upgrade",
-  "main": "dist/svelte-upgrade.umd.js",
-  "module": "dist/svelte-upgrade.esm.js",
+  "main": "dist/index.js",
+  "bin": {
+    "svelte-upgrade": "bin"
+  },
   "files": [
     "dist"
   ],
   "devDependencies": {
     "esm": "^3.0.17",
     "glob": "^7.1.2",
-    "rollup": "^0.52.0",
+    "rollup": "^0.57.1",
+    "rollup-plugin-json": "^2.3.0",
     "sander": "^0.6.0",
     "tape-modern": "^1.0.0"
   },
   "scripts": {
     "build": "rollup -c",
+    "dev": "rollup -cw",
     "test": "node -r esm test/test.js",
     "prepublishOnly": "npm test && npm run build"
   },
   "license": "LIL",
   "dependencies": {
+    "clorox": "^1.0.3",
     "estree-walker": "^0.5.1",
     "magic-string": "^0.24.0",
+    "prompts": "^0.1.8",
     "sade": "^1.4.0",
     "svelte": "^1.60.3"
   }

rollup.config.js

@@ -1,10 +1,16 @@
+import json from 'rollup-plugin-json';
 import pkg from './package.json';
 
 export default {
-	input: 'src/index.js',
-	output: [
-		{ file: pkg.main, format: 'umd' },
-		{ file: pkg.module, format: 'es' }
-	],
-	name: 'svelteUpgrade'
+	input: ['src/index.js', 'src/cli.js'],
+	output: {
+		dir: 'dist',
+		format: 'cjs'	
+	},
+	experimentalCodeSplitting: true,
+	experimentalDynamicImport: true,
+	external: Object.keys(pkg.dependencies),
+	plugins: [
+		json()
+	]
 };

src/cli.js

@@ -0,0 +1,80 @@
+import fs from 'fs';
+import path from 'path';
+import sade from 'sade';
+import glob from 'glob';
+import prompts from 'prompts';
+import * as clorox from 'clorox';
+import * as pkg from '../package.json';
+
+const prog = sade('svelte-upgrade').version(pkg.version);
+
+function mkdirp(dir) {
+	const parent = path.dirname(dir);
+	if (parent !== dir) mkdirp(parent);
+
+	try {
+		fs.mkdirSync(dir);
+	} catch (err) {
+		// noop
+	}
+}
+
+prog.command(`v2 <input>`)
+	.describe(`upgrade <input> file/directory to v2 syntax`)
+	.option(`-o, --output`, `Write new files, instead of overwriting input files`)
+	.option(`-f, --force`, `Don't ask before overwriting files`)
+	.example(`v2 MyComponent.html`)
+	.example(`v2 MyComponent.html -o My-Component.v2.html`)
+	.example(`v2 src`)
+	.action(async (input, opts) => {
+		try {
+			const stats = fs.statSync(input);
+
+			const upgrade = await import('./index.js');
+
+			let output = input;
+
+			if (stats.isDirectory()) {
+				const files = glob.sync('**/*.+(html|svelte)', { cwd: input });
+				input = files.map(file => path.join(input, file));
+				output = files.map(file => path.join(output, file));
+			} else {
+				input = [input];
+				output = [output];
+			}
+
+			if (!opts.force) {
+				const existing = output.filter(file => fs.existsSync(file));
+				if (existing.length > 0) {
+					console.error(`${clorox.cyan(`This will overwrite the following files:`)}`);
+					console.error(`${clorox.gray(existing.join('\n'))}`)
+
+					const response = await prompts({
+						type: 'confirm',
+						name: 'value',
+						message: `Overwrite ${existing.length} ${existing.length === 1 ? 'file' : 'files'}?`,
+						initial: true
+					});
+
+					if (response.value === false) {
+						console.error(`${clorox.cyan('Aborted')}`);
+						return;
+					}
+				}
+			}
+
+			input.forEach((src, i) => {
+				const dest = output[i];
+				const upgraded = upgrade.upgradeTemplate(fs.readFileSync(src, 'utf-8'));
+
+				mkdirp(path.dirname(dest));
+				fs.writeFileSync(dest, upgraded);
+			});
+
+			console.error(`${clorox.cyan(`Wrote ${output.length} ${output.length === 1 ? 'file' : 'files'}`)}`)
+		} catch (err) {
+			console.error(`${clorox.red(err.message)}`);
+		}
+	});
+
+prog.parse(process.argv);