workspace: build时忽略空文件夹

build/build.js

@@ -54,6 +54,7 @@ console.log(packages);
 for (const package of packages) {
     if (package !== 'hydrooj') config.references.push({ path: `packages/${package}` });
     const files = fs.readdirSync(path.resolve(process.cwd(), 'packages', package));
+    if (!files.includes('src') && !files.map(n => n.split('.')[1]).includes('ts')) continue;
     fs.writeFileSync(
         path.resolve(process.cwd(), 'packages', package, 'tsconfig.json'),
         files.includes('src') ? JSON.stringify(configSrc) : JSON.stringify(configFlat),