add CI pipeline with lint, test, build

node_modules/eslint/lib/unsupported-api.js

@@ -0,0 +1,21 @@
+/**
+ * @fileoverview APIs that are not officially supported by ESLint.
+ *      These APIs may change or be removed at any time. Use at your
+ *      own risk.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const { shouldUseFlatConfig } = require("./eslint/eslint");
+const builtinRules = require("./rules");
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = { builtinRules, shouldUseFlatConfig };