sync-docs -w (#329)

Author: Rich-Harris

apps/svelte.dev/package.json

@@ -74,6 +74,7 @@
 		"@types/node": "^20.14.2",
 		"@vercel/speed-insights": "^1.0.0",
 		"browserslist": "^4.23.1",
+		"chokidar": "^4.0.1",
 		"degit": "^2.8.4",
 		"dotenv": "^16.4.5",
 		"esbuild": "^0.21.5",

apps/svelte.dev/scripts/sync-docs/index.ts

@@ -3,6 +3,7 @@ import path from 'node:path';
 import fs from 'node:fs';
 import ts from 'typescript';
 import glob from 'tiny-glob/sync';
+import chokidar from 'chokidar';
 import { fileURLToPath } from 'node:url';
 import { clone_repo, migrate_meta_json, strip_origin } from './utils';
 import { get_types, read_d_ts_file, read_types } from './types';
@@ -123,7 +124,7 @@ if (process.env.USE_GIT === 'true') {
 	);
 }
 
-for (const pkg of packages) {
+async function sync(pkg: Package) {
 	const dest = `${DOCS}/${pkg.name}`;
 
 	fs.rmSync(dest, { force: true, recursive: true });
@@ -140,3 +141,17 @@ for (const pkg of packages) {
 		fs.writeFileSync(file, content);
 	}
 }
+
+for (const pkg of packages) {
+	await sync(pkg);
+}
+
+if (process.argv.includes('-w') || process.argv.includes('--watch')) {
+	for (const pkg of packages) {
+		chokidar
+			.watch(`${REPOS}/${pkg.name}/${pkg.docs}`, { ignoreInitial: true })
+			.on('all', (event) => {
+				sync(pkg);
+			});
+	}
+}