site: fix binary template files in REPL zips (#2812)

site/scripts/build-svelte-app-json.js

@@ -1,11 +0,0 @@
-const fs = require('fs');
-
-const files = [];
-
-for (const path of process.argv.slice(2)) {
-	if (!path.includes('/.')) {
-		files.push({ path: path.slice(19), data: fs.readFileSync(path).toString() });
-	}
-}
-
-fs.writeFileSync('static/svelte-app.json', JSON.stringify(files));

site/scripts/update_template.js

@@ -1,7 +1,7 @@
 const sh = require('shelljs');
 const fs = require('fs');
 
-sh.cd(__dirname+'/../');
+sh.cd(__dirname + '/../');
 
 // fetch svelte app
 sh.rm('-rf','scripts/svelte-app');
@@ -16,7 +16,10 @@ const appPath = 'scripts/svelte-app';
 const files = [];
 
 for (const path of sh.find(appPath).filter(p => fs.lstatSync(p).isFile()) ) {
-	files.push({ path: path.slice(appPath.length + 1), data: fs.readFileSync(path).toString() });
+	const bytes = fs.readFileSync(path);
+	const string = bytes.toString();
+	const data = bytes.compare(Buffer.from(string)) === 0 ? string : [...bytes];
+	files.push({ path: path.slice(appPath.length + 1), data });
 }
 
 fs.writeFileSync('static/svelte-app.json', JSON.stringify(files));