fix: add scripts to each package.json (sveltejs#203)

fix: sveltejs#178

Also update scripts/create-common-bundle/unzip.js to guard against node_modules/.bin already existing

---------

Co-authored-by: Simon H <[email protected]>

Author: tomoam

content/tutorial/01-svelte/06-bindings/05-textarea-inputs/app-a/package.json

@@ -1,6 +1,11 @@
 {
 	"name": "~TODO~",
 	"version": "0.0.1",
+	"scripts": {
+		"dev": "./node_modules/vite/bin/vite.js dev",
+		"build": "./node_modules/vite/bin/vite.js build",
+		"preview": "./node_modules/vite/bin/vite.js preview"
+	},
 	"dependencies": {
 		"marked": "^4.0.16"
 	},

content/tutorial/01-svelte/07-lifecycle/03-update/app-a/package.json

@@ -1,6 +1,11 @@
 {
 	"name": "~TODO~",
 	"version": "0.0.1",
+	"scripts": {
+		"dev": "./node_modules/vite/bin/vite.js dev",
+		"build": "./node_modules/vite/bin/vite.js build",
+		"preview": "./node_modules/vite/bin/vite.js preview"
+	},
 	"dependencies": {
 		"elizabot": "^0.0.3"
 	},

scripts/create-common-bundle/unzip.js

@@ -4,7 +4,9 @@ import AdmZip from 'adm-zip';
 const zip = new AdmZip('common.zip');
 zip.extractAllTo('.');
 
-fs.mkdirSync('node_modules/.bin');
+if (!fs.existsSync('node_modules/.bin')) {
+	fs.mkdirSync('node_modules/.bin');
+}
 
 fs.symlinkSync('../@sveltejs/kit/svelte-kit.js', 'node_modules/.bin/svelte-kit');
 fs.chmodSync('node_modules/.bin/svelte-kit', 0o777);