Add a prerelease check for metadata

check-metadata.js

@@ -0,0 +1,23 @@
+#!/usr/local/bin/node
+
+const chalk = require("chalk");
+const packageJson = require("./package.json");
+
+const name = packageJson.name;
+const displayName = packageJson.storybook.displayName;
+
+if (name.includes("addon-kit") || displayName.includes("Addon Kit")) {
+  console.error(
+    chalk.red.bold`
+⚠️  Please configure appropriate metadata before publishing your addon.
+      `,
+    chalk.red`
+Your package name and/or displayName includes default values from the Addon Kit.
+The addon gallery filters out all such addons.
+
+For more info on addon metadata, see: https://storybook.js.org/docs/react/addons/addon-catalog#addon-metadata
+  `
+  );
+
+  process.exit(1);
+}

package.json

@@ -26,6 +26,7 @@
     "storybook": "start-storybook -p 6006",
     "start": "concurrently \"npm run storybook -- --no-manager-cache --quiet\" \"npm run build -- --watch\"",
     "build-storybook": "build-storybook",
+    "prerelease": "node check-metadata.js",
     "release": "npm run build && auto shipit"
   },
   "devDependencies": {
@@ -36,6 +37,7 @@
     "@storybook/react": "^6.1.14",
     "auto": "^10.3.0",
     "babel-loader": "^8.1.0",
+    "chalk": "^2.4.2",
     "concurrently": "^5.3.0",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",