First app version: create stub from proto, connect to db

.gitignore

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+#npm
+npm-debug.log*
+node_modules
+
+#temporary
+tmp/
+temp/
+
+#personal
+.idea/
+.DS_Store
+
+# git merge leftovers
+*.orig
+
+# secrets
+secrets/*

index.js

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+const fs = require('fs');
+const path = require('path');
+const grpc = require('grpc');
+const protoLoader = require('@grpc/proto-loader');
+
+const SERVICE_PROTO_PATH = path.resolve(__dirname, './kikimr/public/api/grpc/ydb_discovery_v1.proto');
+
+const packageDefinition = protoLoader.loadSync(
+    SERVICE_PROTO_PATH,
+    {
+        keepCase: true,
+        longs: String,
+        enums: String,
+        defaults: true,
+        oneofs: true,
+        includeDirs: [
+            __dirname
+        ]
+    }
+);
+
+function readToken(pathname) {
+    if (fs.existsSync(pathname)) {
+        const token = fs.readFileSync(pathname);
+        return String(token).trim();
+    } else {
+        return '';
+    }
+}
+
+const OAUTH_TOKEN = readToken(path.resolve(__dirname, 'secrets/oauth.token'));
+
+const protoDescriptor = grpc.loadPackageDefinition(packageDefinition);
+
+const {DiscoveryService} = protoDescriptor.Ydb.Discovery.V1;
+
+const client = new DiscoveryService('ydb-ru-prestable.yandex.net:2135', grpc.credentials.createInsecure());
+
+const metadata = new grpc.Metadata();
+metadata.add('x-ydb-auth-ticket', OAUTH_TOKEN);
+
+client.ListEndpoints({database: '/ru-prestable/home/tsufiev/mydb'}, metadata, (err, response) => {
+    if (err) {
+        console.log(err);
+    } else {
+        console.log('Response', response)
+    }
+});