Fix file not found

Author: stevenjoezhang

lib/comment.js

@@ -75,8 +75,17 @@ async function printCDNTable(names) {
     if (!names.includes(name) || !file) continue;
     const version = newPlugins[name];
     const links = getVendors({ ...value, version, minified: file });
+    const path = `./node_modules/${name}/${file}`;
+    const fileExists = fs.existsSync(path);
+    if (!fileExists) {
+      console.log(`
+## ${name}
+
+The file \`${file}\` does not exist.`);
+      continue;
+    }
     const integrity = await ssri
-      .fromStream(fs.createReadStream(`./node_modules/${name}/${file}`), { algorithms: ['sha256'] });
+      .fromStream(fs.createReadStream(path), { algorithms: ['sha256'] });
     await formatTable(key, links, integrity.toString());
   }
 }