create-svelte: set folder name as pkg.name

.changeset/cyan-ads-pump.md

@@ -0,0 +1,5 @@
+---
+'create-svelte': patch
+---
+
+Use the name of folder as name in package.json

packages/create-svelte/bin.js

@@ -84,7 +84,7 @@ async function main() {
 	const name = path.basename(path.resolve(cwd));
 
 	write_template_files(options.template, options.typescript, name, cwd);
-	write_common_files(cwd, options);
+	write_common_files(cwd, options, name);
 
 	console.log(bold(green('✔ Copied project files')));
 
@@ -173,8 +173,9 @@ function write_template_files(template, typescript, name, cwd) {
  *
  * @param {string} cwd
  * @param {import('./types/internal').Options} options
+ * @param {string} name
  */
-function write_common_files(cwd, options) {
+function write_common_files(cwd, options, name) {
 	const shared = dist('shared.json');
 	const { files } = /** @type {import('./types/internal').Common} */ (JSON.parse(
 		fs.readFileSync(shared, 'utf-8')
@@ -201,6 +202,7 @@ function write_common_files(cwd, options) {
 
 	pkg.dependencies = sort_keys(pkg.dependencies);
 	pkg.devDependencies = sort_keys(pkg.devDependencies);
+	pkg.name = toValidPackageName(name);
 
 	fs.writeFileSync(pkg_file, JSON.stringify(pkg, null, '  '));
 }
@@ -260,4 +262,14 @@ function dist(path) {
 	return fileURLToPath(new URL(`./dist/${path}`, import.meta.url).href);
 }
 
+/** @param {string} name */
+function toValidPackageName(name) {
+	return name
+		.trim()
+		.toLowerCase()
+		.replace(/\s+/g, '-')
+		.replace(/^[._]/, '')
+		.replace(/[^a-z0-9~.-]+/g, '-');
+}
+
 main();