fix: Add gRPC config to TpuClientConfig and bump version

.github/workflows/build-tpu-native.yml

@@ -158,9 +158,19 @@ jobs:
           registry-url: https://registry.npmjs.org/
           cache: pnpm
 
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
       - name: Install dependencies
         run: pnpm install --no-frozen-lockfile
 
+      - name: Regenerate JS + types (index.js / index.d.ts)
+        run: pnpm exec napi build --platform --release --target x86_64-unknown-linux-gnu
+        shell: bash
+        working-directory: packages/fastlane
+
       - name: Download all artifacts
         uses: actions/download-artifact@v4
         with:
@@ -174,6 +184,10 @@ jobs:
           ls -la *.node
         working-directory: packages/fastlane
 
+      - name: Verify gRPC config is present in types
+        run: node -e "const fs=require('node:fs'); const dts=fs.readFileSync('index.d.ts','utf8'); const required=['grpcUrl','grpcXToken']; const missing=required.filter(k=>!dts.includes(k)); if(missing.length){ console.error('Missing fields in index.d.ts:', missing.join(', ')); process.exit(1);} console.log('index.d.ts contains gRPC fields');"
+        working-directory: packages/fastlane
+
       - name: Publish
         run: |
           npm config set provenance true

examples/next-js/package.json

@@ -13,7 +13,7 @@
         "@phosphor-icons/react": "^2.1.10",
         "@pipeit/actions": "workspace:*",
         "@pipeit/core": "^0.2.5",
-        "@pipeit/fastlane": "^0.1.2",
+        "@pipeit/fastlane": "^0.1.4",
         "@radix-ui/react-accordion": "^1.2.12",
         "@radix-ui/react-avatar": "^1.1.10",
         "@radix-ui/react-dialog": "^1.1.15",

package.json

@@ -15,7 +15,7 @@
     "@solana/prettier-config-solana": "^0.0.6",
     "@types/node": "^24.10.0",
     "prettier": "^3.6.2",
-    "turbo": "^2.6.0",
+    "turbo": "^2.7.2",
     "typescript": "^5.9.3",
     "vitest": "^3.2.4"
   },

packages/fastlane/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pipeit-fastlane"
-version = "0.1.4"
+version = "0.1.5"
 edition = "2021"
 description = "Native QUIC client for direct Solana TPU transaction submission"
 license = "MIT"

packages/fastlane/index.d.ts

@@ -9,6 +9,13 @@ export interface TpuClientConfig {
   rpcUrl: string
   /** WebSocket URL for slot update subscriptions. */
   wsUrl: string
+  /**
+   * Optional gRPC URL for Yellowstone slot subscriptions.
+   * When set, this takes precedence over WebSocket tracking.
+   */
+  grpcUrl?: string
+  /** Optional gRPC x-token for authenticated Yellowstone endpoints. */
+  grpcXToken?: string
   /** Number of upcoming leaders to send transactions to (default: 2). */
   fanout?: number
   /** Whether to pre-warm connections to upcoming leaders (default: true). */
@@ -85,6 +92,7 @@ export declare class TpuClient {
   /**
    * Sends a serialized transaction to TPU endpoints (single attempt).
    *
+   * Uses slot-aware leader selection when available, falling back to fanout.
    * Returns detailed per-leader results including retry statistics.
    * For higher landing rates, use `send_until_confirmed` instead.
    */

packages/fastlane/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@pipeit/fastlane",
-    "version": "0.1.4",
+    "version": "0.1.5",
     "description": "Native QUIC client for direct Solana TPU transaction submission",
     "main": "index.js",
     "types": "index.d.ts",