v1.1.2

changelog.md

@@ -1,5 +1,29 @@
 # Changelog
 
+## 2026-02-10 - 1.1.2 - fix(rust-binary-locator)
+use import.meta.resolve and url.fileURLToPath to locate bundled Rust binary in ESM environments
+
+- Replace require.resolve with import.meta.resolve to support ESM module resolution
+- Convert resolved file URL to a filesystem path using url.fileURLToPath
+- Export the url module from ts/plugins to provide fileURLToPath
+
+## 2026-02-10 - 1.1.1 - fix(readme)
+update README with comprehensive documentation, usage examples, API reference, installation instructions, and legal/company information
+
+- Rewrote readme.md (≈ +298 −3 lines) to add detailed install, overview, IPC protocol, command definition examples, usage, API reference, issue reporting & security guidance, and legal/trademark/company information.
+- Documentation-only change — no source code modified.
+- Current package version is 1.1.0; recommend a patch release
+
+## 2026-02-10 - 1.1.0 - feat(rustbridge)
+add RustBridge and RustBinaryLocator with typed IPC interfaces, plugins, tests and mock runner; export from index; add npm registries
+
+- Introduce RustBridge: spawn and manage a child binary, JSON-over-stdin/stdout request/response handling, events, timeouts, pending request tracking, kill/cleanup logic.
+- Introduce RustBinaryLocator: multi-strategy binary discovery (explicit path, env var, platform-specific package, local build paths, system PATH) with caching and logger hooks.
+- Add IPC and config TypeScript interfaces (IManagementRequest/Response/Event, ICommandDefinition, IBinaryLocatorOptions, IRustBridgeOptions) and re-export via interfaces/index.ts.
+- Update ts/plugins.ts to export fs, child_process, readline and events for easier native integration.
+- Add tests for RustBridge and RustBinaryLocator plus a test helper mock-rust-binary.mjs to simulate the IPC protocol and exercise commands, events, timeouts and locator behaviors.
+- Update ts/index.ts to export RustBridge and RustBinaryLocator and export interfaces; update npmextra.json to include internal Verdaccio registry alongside npmjs.org.
+
 ## 2026-02-08 - 1.0.2 - fix()
 no changes
 

npmextra.json

@@ -11,7 +11,11 @@
       "projectDomain": "push.rocks"
     },
     "release": {
-      "accessLevel": "public"
+      "accessLevel": "public",
+      "registries": [
+        "https://verdaccio.lossless.digital",
+        "https://registry.npmjs.org"
+      ]
     }
   },
   "@ship.zone/szci": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@push.rocks/smartrust",
-  "version": "1.0.2",
+  "version": "1.1.2",
   "private": false,
   "description": "a bridge between JS engines and rust",
   "main": "dist_ts/index.js",

readme.md

@@ -1,5 +1,300 @@
 # @push.rocks/smartrust
-a bridge between JS engines and rust
 
-## How to create the docs
-To create docs run gitzone aidoc.
+A type-safe, standardized bridge between TypeScript and Rust binaries via JSON-over-stdin/stdout IPC.
+
+## Issue Reporting and Security
+
+For reporting bugs, issues, or security vulnerabilities, please visit [community.foss.global/](https://community.foss.global/). This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a [code.foss.global/](https://code.foss.global/) account to submit Pull Requests directly.
+
+## Install 📦
+
+```bash
+npm install @push.rocks/smartrust
+# or
+pnpm install @push.rocks/smartrust
+```
+
+## Overview 🔭
+
+`@push.rocks/smartrust` provides a production-ready bridge for TypeScript applications that need to communicate with Rust binaries. It handles the entire lifecycle — binary discovery, process spawning, request/response correlation with timeouts, event streaming, and graceful shutdown — so you can focus on your command definitions instead of IPC plumbing.
+
+### Why?
+
+If you're integrating Rust into a Node.js project, you'll inevitably need:
+- A way to **find** the compiled Rust binary across different environments (dev, CI, production, platform packages)
+- A way to **spawn** it and establish reliable two-way communication
+- **Type-safe** request/response patterns with proper error handling
+- **Event streaming** from Rust to TypeScript
+- **Graceful lifecycle management** (ready detection, clean shutdown, force kill)
+
+`smartrust` wraps all of this into two classes: `RustBridge` and `RustBinaryLocator`.
+
+## Usage 🚀
+
+### The IPC Protocol
+
+`smartrust` uses a simple, newline-delimited JSON protocol over stdin/stdout:
+
+| Direction | Format | Description |
+|-----------|--------|-------------|
+| **TS → Rust** (Request) | `{"id": "req_1", "method": "start", "params": {...}}` | Command with unique ID |
+| **Rust → TS** (Response) | `{"id": "req_1", "success": true, "result": {...}}` | Response correlated by ID |
+| **Rust → TS** (Error) | `{"id": "req_1", "success": false, "error": "msg"}` | Error correlated by ID |
+| **Rust → TS** (Event) | `{"event": "ready", "data": {...}}` | Unsolicited event (no ID) |
+
+Your Rust binary reads JSON lines from stdin and writes JSON lines to stdout. That's it. Stderr is free for logging.
+
+### Defining Your Commands
+
+Start by defining a type map of commands your Rust binary supports:
+
+```typescript
+import { RustBridge, type ICommandDefinition } from '@push.rocks/smartrust';
+
+// Define your command types
+type TMyCommands = {
+  start:      { params: { port: number; host: string }; result: { pid: number } };
+  stop:       { params: {};                             result: void };
+  getMetrics: { params: {};                             result: { connections: number; uptime: number } };
+  reload:     { params: { configPath: string };         result: void };
+};
+```
+
+### Creating and Using the Bridge
+
+```typescript
+const bridge = new RustBridge<TMyCommands>({
+  binaryName: 'my-rust-server',
+  envVarName: 'MY_SERVER_BINARY',             // optional: env var override
+  platformPackagePrefix: '@myorg/my-server',  // optional: platform npm packages
+});
+
+// Spawn the binary and wait for it to signal readiness
+const ok = await bridge.spawn();
+if (!ok) {
+  console.error('Failed to start Rust binary');
+  process.exit(1);
+}
+
+// Send type-safe commands — params and return types are inferred!
+const { pid } = await bridge.sendCommand('start', { port: 8080, host: '0.0.0.0' });
+console.log(`Server started with PID ${pid}`);
+
+const metrics = await bridge.sendCommand('getMetrics', {});
+console.log(`Active connections: ${metrics.connections}`);
+
+// Listen for events from Rust
+bridge.on('management:configChanged', (data) => {
+  console.log('Config was changed:', data);
+});
+
+// Clean shutdown
+bridge.kill();
+```
+
+### Binary Locator
+
+The `RustBinaryLocator` searches for your binary using a priority-ordered strategy:
+
+| Priority | Source | Description |
+|----------|--------|-------------|
+| 1 | `binaryPath` option | Explicit path — skips all other search |
+| 2 | Environment variable | e.g. `MY_SERVER_BINARY=/usr/local/bin/server` |
+| 3 | Platform npm package | e.g. `@myorg/my-server-linux-x64/my-rust-server` |
+| 4 | Local dev paths | `./rust/target/release/<name>` and `./rust/target/debug/<name>` |
+| 5 | System PATH | Standard `$PATH` lookup |
+
+You can also use the locator standalone:
+
+```typescript
+import { RustBinaryLocator } from '@push.rocks/smartrust';
+
+const locator = new RustBinaryLocator({
+  binaryName: 'my-rust-server',
+  envVarName: 'MY_SERVER_BINARY',
+  localPaths: ['/opt/myapp/bin/server'],  // custom search paths
+});
+
+const binaryPath = await locator.findBinary();
+// Result is cached — call clearCache() to force re-search
+```
+
+### Configuration Reference
+
+The `RustBridge` constructor accepts an `IRustBridgeOptions` object:
+
+```typescript
+const bridge = new RustBridge<TMyCommands>({
+  // --- Binary Locator Options ---
+  binaryName: 'my-server',                    // required: name of the binary
+  binaryPath: '/explicit/path/to/binary',     // optional: skip search entirely
+  envVarName: 'MY_SERVER_BINARY',             // optional: env var for path override
+  platformPackagePrefix: '@myorg/my-server',  // optional: platform npm package prefix
+  localPaths: ['./build/server'],             // optional: custom local search paths
+  searchSystemPath: true,                     // optional: search $PATH (default: true)
+
+  // --- Bridge Options ---
+  cliArgs: ['--management'],                  // optional: args passed to binary (default: ['--management'])
+  requestTimeoutMs: 30000,                    // optional: per-request timeout (default: 30000)
+  readyTimeoutMs: 10000,                      // optional: ready event timeout (default: 10000)
+  env: { RUST_LOG: 'debug' },                 // optional: extra env vars for the child process
+  readyEventName: 'ready',                    // optional: name of the ready event (default: 'ready')
+  logger: myLogger,                           // optional: logger implementing IRustBridgeLogger
+});
+```
+
+### Events
+
+`RustBridge` extends `EventEmitter` and emits the following events:
+
+| Event | Payload | Description |
+|-------|---------|-------------|
+| `ready` | — | Bridge connected and binary reported ready |
+| `exit` | `(code, signal)` | Rust process exited |
+| `stderr` | `string` | A line from the binary's stderr |
+| `management:<name>` | `any` | Custom event from Rust (e.g. `management:configChanged`) |
+
+### Custom Logger
+
+Plug in your own logger by implementing the `IRustBridgeLogger` interface:
+
+```typescript
+import type { IRustBridgeLogger } from '@push.rocks/smartrust';
+
+const logger: IRustBridgeLogger = {
+  log(level: string, message: string, data?: Record<string, any>) {
+    console.log(`[${level}] ${message}`, data || '');
+  },
+};
+
+const bridge = new RustBridge<TMyCommands>({
+  binaryName: 'my-server',
+  logger,
+});
+```
+
+### Writing the Rust Side
+
+Your Rust binary needs to implement a simple protocol:
+
+1. **On startup**, write a ready event to stdout:
+   ```
+   {"event":"ready","data":{"version":"1.0.0"}}\n
+   ```
+
+2. **Read JSON lines from stdin**, parse each as `{"id": "...", "method": "...", "params": {...}}`
+
+3. **Write JSON responses to stdout**, each as `{"id": "...", "success": true, "result": {...}}\n`
+
+4. **Emit events** anytime by writing `{"event": "name", "data": {...}}\n` to stdout
+
+5. **Use stderr** for logging — it won't interfere with the IPC protocol
+
+Here's a minimal Rust skeleton:
+
+```rust
+use serde::{Deserialize, Serialize};
+use std::io::{self, BufRead, Write};
+
+#[derive(Deserialize)]
+struct Request {
+    id: String,
+    method: String,
+    params: serde_json::Value,
+}
+
+#[derive(Serialize)]
+struct Response {
+    id: String,
+    success: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    result: Option<serde_json::Value>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    error: Option<String>,
+}
+
+fn main() {
+    // Signal ready
+    println!(r#"{{"event":"ready","data":{{"version":"1.0.0"}}}}"#);
+    io::stdout().flush().unwrap();
+
+    let stdin = io::stdin();
+    for line in stdin.lock().lines() {
+        let line = line.unwrap();
+        let req: Request = serde_json::from_str(&line).unwrap();
+
+        let response = match req.method.as_str() {
+            "ping" => Response {
+                id: req.id,
+                success: true,
+                result: Some(serde_json::json!({"pong": true})),
+                error: None,
+            },
+            _ => Response {
+                id: req.id,
+                success: false,
+                result: None,
+                error: Some(format!("Unknown method: {}", req.method)),
+            },
+        };
+
+        let json = serde_json::to_string(&response).unwrap();
+        println!("{json}");
+        io::stdout().flush().unwrap();
+    }
+}
+```
+
+## API Reference 📖
+
+### `RustBridge<TCommands>`
+
+| Method / Property | Signature | Description |
+|---|---|---|
+| `constructor` | `new RustBridge<T>(options: IRustBridgeOptions)` | Create a new bridge instance |
+| `spawn()` | `Promise<boolean>` | Spawn the binary and wait for ready; returns `false` on failure |
+| `sendCommand(method, params)` | `Promise<TCommands[K]['result']>` | Send a typed command and await the response |
+| `kill()` | `void` | SIGTERM the process, reject pending requests, force SIGKILL after 5s |
+| `running` | `boolean` | Whether the bridge is currently connected |
+
+### `RustBinaryLocator`
+
+| Method / Property | Signature | Description |
+|---|---|---|
+| `constructor` | `new RustBinaryLocator(options: IBinaryLocatorOptions, logger?)` | Create a locator instance |
+| `findBinary()` | `Promise<string \| null>` | Find the binary using the priority search; result is cached |
+| `clearCache()` | `void` | Clear the cached path to force a fresh search |
+
+### Exported Interfaces
+
+| Interface | Description |
+|---|---|
+| `IRustBridgeOptions` | Full configuration for `RustBridge` |
+| `IBinaryLocatorOptions` | Configuration for `RustBinaryLocator` |
+| `IRustBridgeLogger` | Logger interface: `{ log(level, message, data?) }` |
+| `IManagementRequest` | IPC request shape: `{ id, method, params }` |
+| `IManagementResponse` | IPC response shape: `{ id, success, result?, error? }` |
+| `IManagementEvent` | IPC event shape: `{ event, data }` |
+| `ICommandDefinition` | Single command definition: `{ params, result }` |
+| `TCommandMap` | `Record<string, ICommandDefinition>` |
+
+## License and Legal Information
+
+This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the [LICENSE](./LICENSE) file.
+
+**Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.
+
+### Trademarks
+
+This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH or third parties, and are not included within the scope of the MIT license granted herein.
+
+Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines or the guidelines of the respective third-party owners, and any usage must be approved in writing. Third-party trademarks used herein are the property of their respective owners and used only in a descriptive manner, e.g. for an implementation of an API or similar.
+
+### Company Information
+
+Task Venture Capital GmbH
+Registered at District Court Bremen HRB 35230 HB, Germany
+
+For any legal inquiries or further information, please contact us via email at hello@task.vc.
+
+By using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.

test/helpers/mock-rust-binary.mjs

@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+
+/**
+ * Mock "Rust binary" for testing the RustBridge IPC protocol.
+ * Reads JSON lines from stdin, writes JSON lines to stdout.
+ * Emits a ready event on startup.
+ */
+
+import { createInterface } from 'readline';
+
+// Emit ready event
+const readyEvent = JSON.stringify({ event: 'ready', data: { version: '1.0.0' } });
+process.stdout.write(readyEvent + '\n');
+
+const rl = createInterface({ input: process.stdin });
+
+rl.on('line', (line) => {
+  let request;
+  try {
+    request = JSON.parse(line.trim());
+  } catch {
+    return;
+  }
+
+  const { id, method, params } = request;
+
+  if (method === 'echo') {
+    // Echo back the params as result
+    const response = JSON.stringify({ id, success: true, result: params });
+    process.stdout.write(response + '\n');
+  } else if (method === 'error') {
+    // Return an error
+    const response = JSON.stringify({ id, success: false, error: 'Test error message' });
+    process.stdout.write(response + '\n');
+  } else if (method === 'emitEvent') {
+    // Emit a custom event, then respond with success
+    const event = JSON.stringify({ event: params.eventName, data: params.eventData });
+    process.stdout.write(event + '\n');
+    const response = JSON.stringify({ id, success: true, result: null });
+    process.stdout.write(response + '\n');
+  } else if (method === 'slow') {
+    // Respond after a delay
+    setTimeout(() => {
+      const response = JSON.stringify({ id, success: true, result: { delayed: true } });
+      process.stdout.write(response + '\n');
+    }, 100);
+  } else if (method === 'exit') {
+    // Graceful exit
+    const response = JSON.stringify({ id, success: true, result: null });
+    process.stdout.write(response + '\n');
+    process.exit(0);
+  } else {
+    // Unknown command
+    const response = JSON.stringify({ id, success: false, error: `Unknown method: ${method}` });
+    process.stdout.write(response + '\n');
+  }
+});
+
+// Handle SIGTERM gracefully
+process.on('SIGTERM', () => {
+  process.exit(0);
+});

test/test.rustbinarylocator.node.ts

@@ -0,0 +1,98 @@
+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import * as path from 'path';
+import * as fs from 'fs';
+import { RustBinaryLocator } from '../ts/classes.rustbinarylocator.js';
+
+const testDir = path.resolve(path.dirname(new URL(import.meta.url).pathname));
+
+tap.test('should return null when no binary is found', async () => {
+  const locator = new RustBinaryLocator({
+    binaryName: 'nonexistent-binary-xyz',
+    searchSystemPath: false,
+  });
+  const result = await locator.findBinary();
+  expect(result).toBeNull();
+});
+
+tap.test('should use explicit binaryPath when provided', async () => {
+  const mockBinaryPath = path.join(testDir, 'helpers/mock-rust-binary.mjs');
+  const locator = new RustBinaryLocator({
+    binaryName: 'mock-rust-binary',
+    binaryPath: mockBinaryPath,
+    searchSystemPath: false,
+  });
+  const result = await locator.findBinary();
+  expect(result).toEqual(mockBinaryPath);
+});
+
+tap.test('should cache the result', async () => {
+  const mockBinaryPath = path.join(testDir, 'helpers/mock-rust-binary.mjs');
+  const locator = new RustBinaryLocator({
+    binaryName: 'mock-rust-binary',
+    binaryPath: mockBinaryPath,
+    searchSystemPath: false,
+  });
+
+  const first = await locator.findBinary();
+  const second = await locator.findBinary();
+  expect(first).toEqual(second);
+  expect(first).toEqual(mockBinaryPath);
+});
+
+tap.test('should clear cache', async () => {
+  const mockBinaryPath = path.join(testDir, 'helpers/mock-rust-binary.mjs');
+  const locator = new RustBinaryLocator({
+    binaryName: 'mock-rust-binary',
+    binaryPath: mockBinaryPath,
+    searchSystemPath: false,
+  });
+
+  const first = await locator.findBinary();
+  expect(first).toEqual(mockBinaryPath);
+
+  locator.clearCache();
+  // After clearing, next call should re-search and still find it
+  const second = await locator.findBinary();
+  expect(second).toEqual(mockBinaryPath);
+});
+
+tap.test('should fall back to env var when binaryPath not set', async () => {
+  const mockBinaryPath = path.join(testDir, 'helpers/mock-rust-binary.mjs');
+  const envVar = 'TEST_SMARTRUST_BINARY_' + Date.now();
+  process.env[envVar] = mockBinaryPath;
+
+  const locator = new RustBinaryLocator({
+    binaryName: 'mock-rust-binary',
+    envVarName: envVar,
+    searchSystemPath: false,
+  });
+
+  const result = await locator.findBinary();
+  expect(result).toEqual(mockBinaryPath);
+
+  delete process.env[envVar];
+});
+
+tap.test('should find binary in local paths', async () => {
+  const mockBinaryPath = path.join(testDir, 'helpers/mock-rust-binary.mjs');
+  const locator = new RustBinaryLocator({
+    binaryName: 'mock-rust-binary',
+    localPaths: ['/nonexistent/path/binary', mockBinaryPath],
+    searchSystemPath: false,
+  });
+
+  const result = await locator.findBinary();
+  expect(result).toEqual(mockBinaryPath);
+});
+
+tap.test('should find node in system PATH', async () => {
+  const locator = new RustBinaryLocator({
+    binaryName: 'node',
+    searchSystemPath: true,
+  });
+
+  const result = await locator.findBinary();
+  expect(result).not.toBeNull();
+});
+
+export default tap.start();

test/test.rustbridge.node.ts

@@ -0,0 +1,191 @@
+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import * as path from 'path';
+import { RustBridge } from '../ts/classes.rustbridge.js';
+import type { ICommandDefinition } from '../ts/interfaces/index.js';
+
+const testDir = path.resolve(path.dirname(new URL(import.meta.url).pathname));
+const mockBinaryPath = path.join(testDir, 'helpers/mock-rust-binary.mjs');
+
+// Define the command types for our mock binary
+type TMockCommands = {
+  echo: { params: Record<string, any>; result: Record<string, any> };
+  error: { params: {}; result: never };
+  emitEvent: { params: { eventName: string; eventData: any }; result: null };
+  slow: { params: {}; result: { delayed: boolean } };
+  exit: { params: {}; result: null };
+};
+
+tap.test('should spawn and receive ready event', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+  });
+
+  const result = await bridge.spawn();
+  expect(result).toBeTrue();
+  expect(bridge.running).toBeTrue();
+
+  bridge.kill();
+  expect(bridge.running).toBeFalse();
+});
+
+tap.test('should send command and receive response', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+  });
+
+  await bridge.spawn();
+
+  const result = await bridge.sendCommand('echo', { hello: 'world', num: 42 });
+  expect(result).toEqual({ hello: 'world', num: 42 });
+
+  bridge.kill();
+});
+
+tap.test('should handle error responses', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+  });
+
+  await bridge.spawn();
+
+  let threw = false;
+  try {
+    await bridge.sendCommand('error', {});
+  } catch (err: any) {
+    threw = true;
+    expect(err.message).toInclude('Test error message');
+  }
+  expect(threw).toBeTrue();
+
+  bridge.kill();
+});
+
+tap.test('should receive custom events from the binary', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+  });
+
+  await bridge.spawn();
+
+  const eventPromise = new Promise<any>((resolve) => {
+    bridge.once('management:testEvent', (data) => {
+      resolve(data);
+    });
+  });
+
+  await bridge.sendCommand('emitEvent', {
+    eventName: 'testEvent',
+    eventData: { key: 'value' },
+  });
+
+  const eventData = await eventPromise;
+  expect(eventData).toEqual({ key: 'value' });
+
+  bridge.kill();
+});
+
+tap.test('should handle delayed responses', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+    requestTimeoutMs: 5000,
+  });
+
+  await bridge.spawn();
+
+  const result = await bridge.sendCommand('slow', {});
+  expect(result).toEqual({ delayed: true });
+
+  bridge.kill();
+});
+
+tap.test('should handle multiple concurrent commands', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+  });
+
+  await bridge.spawn();
+
+  const results = await Promise.all([
+    bridge.sendCommand('echo', { id: 1 }),
+    bridge.sendCommand('echo', { id: 2 }),
+    bridge.sendCommand('echo', { id: 3 }),
+  ]);
+
+  expect(results[0]).toEqual({ id: 1 });
+  expect(results[1]).toEqual({ id: 2 });
+  expect(results[2]).toEqual({ id: 3 });
+
+  bridge.kill();
+});
+
+tap.test('should throw when sending command while not running', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+  });
+
+  let threw = false;
+  try {
+    await bridge.sendCommand('echo', {});
+  } catch (err: any) {
+    threw = true;
+    expect(err.message).toInclude('not running');
+  }
+  expect(threw).toBeTrue();
+});
+
+tap.test('should return false when binary not found', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'nonexistent-binary-xyz',
+    searchSystemPath: false,
+  });
+
+  const result = await bridge.spawn();
+  expect(result).toBeFalse();
+  expect(bridge.running).toBeFalse();
+});
+
+tap.test('should emit exit event when process exits', async () => {
+  const bridge = new RustBridge<TMockCommands>({
+    binaryName: 'node',
+    binaryPath: 'node',
+    cliArgs: [mockBinaryPath],
+    readyTimeoutMs: 5000,
+  });
+
+  await bridge.spawn();
+
+  const exitPromise = new Promise<number | null>((resolve) => {
+    bridge.once('exit', (code) => {
+      resolve(code);
+    });
+  });
+
+  // Tell mock binary to exit
+  await bridge.sendCommand('exit', {});
+
+  const exitCode = await exitPromise;
+  expect(exitCode).toEqual(0);
+  expect(bridge.running).toBeFalse();
+});
+
+export default tap.start();

test/test.ts

@@ -1,8 +1,12 @@
 import { expect, tap } from '@git.zone/tstest/tapbundle';
-import * as smartrust from '../ts/index.js'
+import * as smartrust from '../ts/index.js';
 
-tap.test('first test', async () => {
-  console.log(smartrust)
-})
+tap.test('should export RustBridge', async () => {
+  expect(smartrust.RustBridge).toBeTypeOf('function');
+});
 
-export default tap.start()
+tap.test('should export RustBinaryLocator', async () => {
+  expect(smartrust.RustBinaryLocator).toBeTypeOf('function');
+});
+
+export default tap.start();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartrust',
-  version: '1.0.2',
+  version: '1.1.2',
   description: 'a bridge between JS engines and rust'
 }

ts/classes.rustbinarylocator.ts

@@ -0,0 +1,141 @@
+import * as plugins from './plugins.js';
+import type { IBinaryLocatorOptions, IRustBridgeLogger } from './interfaces/index.js';
+
+const defaultLogger: IRustBridgeLogger = {
+  log() {},
+};
+
+/**
+ * Locates a Rust binary using a priority-ordered search strategy:
+ * 1. Explicit binaryPath override
+ * 2. Environment variable
+ * 3. Platform-specific npm package
+ * 4. Local development build paths
+ * 5. System PATH
+ */
+export class RustBinaryLocator {
+  private options: IBinaryLocatorOptions;
+  private logger: IRustBridgeLogger;
+  private cachedPath: string | null = null;
+
+  constructor(options: IBinaryLocatorOptions, logger?: IRustBridgeLogger) {
+    this.options = options;
+    this.logger = logger || defaultLogger;
+  }
+
+  /**
+   * Find the binary path.
+   * Returns null if no binary is available.
+   */
+  public async findBinary(): Promise<string | null> {
+    if (this.cachedPath !== null) {
+      return this.cachedPath;
+    }
+    const path = await this.searchBinary();
+    this.cachedPath = path;
+    return path;
+  }
+
+  /**
+   * Clear the cached binary path.
+   */
+  public clearCache(): void {
+    this.cachedPath = null;
+  }
+
+  private async searchBinary(): Promise<string | null> {
+    const { binaryName } = this.options;
+
+    // 1. Explicit binary path override
+    if (this.options.binaryPath) {
+      if (await this.isExecutable(this.options.binaryPath)) {
+        this.logger.log('info', `Binary found via explicit path: ${this.options.binaryPath}`);
+        return this.options.binaryPath;
+      }
+      this.logger.log('warn', `Explicit binary path not executable: ${this.options.binaryPath}`);
+    }
+
+    // 2. Environment variable override
+    if (this.options.envVarName) {
+      const envPath = process.env[this.options.envVarName];
+      if (envPath) {
+        if (await this.isExecutable(envPath)) {
+          this.logger.log('info', `Binary found via ${this.options.envVarName}: ${envPath}`);
+          return envPath;
+        }
+        this.logger.log('warn', `${this.options.envVarName} set but not executable: ${envPath}`);
+      }
+    }
+
+    // 3. Platform-specific npm package
+    if (this.options.platformPackagePrefix) {
+      const platformBinary = await this.findPlatformPackageBinary();
+      if (platformBinary) {
+        this.logger.log('info', `Binary found in platform package: ${platformBinary}`);
+        return platformBinary;
+      }
+    }
+
+    // 4. Local development build paths
+    const localPaths = this.options.localPaths || [
+      plugins.path.resolve(process.cwd(), `rust/target/release/${binaryName}`),
+      plugins.path.resolve(process.cwd(), `rust/target/debug/${binaryName}`),
+    ];
+    for (const localPath of localPaths) {
+      if (await this.isExecutable(localPath)) {
+        this.logger.log('info', `Binary found at local path: ${localPath}`);
+        return localPath;
+      }
+    }
+
+    // 5. System PATH
+    if (this.options.searchSystemPath !== false) {
+      const systemPath = await this.findInPath(binaryName);
+      if (systemPath) {
+        this.logger.log('info', `Binary found in system PATH: ${systemPath}`);
+        return systemPath;
+      }
+    }
+
+    this.logger.log('error', `No binary '${binaryName}' found. Provide an explicit path, set an env var, install the platform package, or build from source.`);
+    return null;
+  }
+
+  private async findPlatformPackageBinary(): Promise<string | null> {
+    const { binaryName, platformPackagePrefix } = this.options;
+    const platform = process.platform;
+    const arch = process.arch;
+    const packageName = `${platformPackagePrefix}-${platform}-${arch}`;
+
+    try {
+      const resolved = import.meta.resolve(`${packageName}/${binaryName}`);
+      const packagePath = plugins.url.fileURLToPath(resolved);
+      if (await this.isExecutable(packagePath)) {
+        return packagePath;
+      }
+    } catch {
+      // Package not installed - expected for development
+    }
+    return null;
+  }
+
+  private async isExecutable(filePath: string): Promise<boolean> {
+    try {
+      await plugins.fs.promises.access(filePath, plugins.fs.constants.X_OK);
+      return true;
+    } catch {
+      return false;
+    }
+  }
+
+  private async findInPath(binaryName: string): Promise<string | null> {
+    const pathDirs = (process.env.PATH || '').split(plugins.path.delimiter);
+    for (const dir of pathDirs) {
+      const fullPath = plugins.path.join(dir, binaryName);
+      if (await this.isExecutable(fullPath)) {
+        return fullPath;
+      }
+    }
+    return null;
+  }
+}

ts/classes.rustbridge.ts

@@ -0,0 +1,256 @@
+import * as plugins from './plugins.js';
+import { RustBinaryLocator } from './classes.rustbinarylocator.js';
+import type {
+  IRustBridgeOptions,
+  IRustBridgeLogger,
+  TCommandMap,
+  IManagementRequest,
+  IManagementResponse,
+  IManagementEvent,
+} from './interfaces/index.js';
+
+const defaultLogger: IRustBridgeLogger = {
+  log() {},
+};
+
+/**
+ * Generic bridge between TypeScript and a Rust binary.
+ * Communicates via JSON-over-stdin/stdout IPC protocol.
+ *
+ * @typeParam TCommands - Map of command names to their param/result types
+ */
+export class RustBridge<TCommands extends TCommandMap = TCommandMap> extends plugins.events.EventEmitter {
+  private locator: RustBinaryLocator;
+  private options: Required<Pick<IRustBridgeOptions, 'cliArgs' | 'requestTimeoutMs' | 'readyTimeoutMs' | 'readyEventName'>> & IRustBridgeOptions;
+  private logger: IRustBridgeLogger;
+  private childProcess: plugins.childProcess.ChildProcess | null = null;
+  private readlineInterface: plugins.readline.Interface | null = null;
+  private pendingRequests = new Map<string, {
+    resolve: (value: any) => void;
+    reject: (error: Error) => void;
+    timer: ReturnType<typeof setTimeout>;
+  }>();
+  private requestCounter = 0;
+  private isRunning = false;
+  private binaryPath: string | null = null;
+
+  constructor(options: IRustBridgeOptions) {
+    super();
+    this.logger = options.logger || defaultLogger;
+    this.options = {
+      cliArgs: ['--management'],
+      requestTimeoutMs: 30000,
+      readyTimeoutMs: 10000,
+      readyEventName: 'ready',
+      ...options,
+    };
+    this.locator = new RustBinaryLocator(options, this.logger);
+  }
+
+  /**
+   * Spawn the Rust binary and wait for it to signal readiness.
+   * Returns true if the binary was found and spawned successfully.
+   */
+  public async spawn(): Promise<boolean> {
+    this.binaryPath = await this.locator.findBinary();
+    if (!this.binaryPath) {
+      return false;
+    }
+
+    return new Promise<boolean>((resolve) => {
+      try {
+        const env = this.options.env
+          ? { ...process.env, ...this.options.env }
+          : { ...process.env };
+
+        this.childProcess = plugins.childProcess.spawn(this.binaryPath!, this.options.cliArgs, {
+          stdio: ['pipe', 'pipe', 'pipe'],
+          env,
+        });
+
+        // Handle stderr
+        this.childProcess.stderr?.on('data', (data: Buffer) => {
+          const lines = data.toString().split('\n').filter((l: string) => l.trim());
+          for (const line of lines) {
+            this.logger.log('debug', `[${this.options.binaryName}] ${line}`);
+            this.emit('stderr', line);
+          }
+        });
+
+        // Handle stdout via readline for line-delimited JSON
+        this.readlineInterface = plugins.readline.createInterface({ input: this.childProcess.stdout! });
+        this.readlineInterface.on('line', (line: string) => {
+          this.handleLine(line.trim());
+        });
+
+        // Handle process exit
+        this.childProcess.on('exit', (code, signal) => {
+          this.logger.log('info', `Process exited (code=${code}, signal=${signal})`);
+          this.cleanup();
+          this.emit('exit', code, signal);
+        });
+
+        this.childProcess.on('error', (err) => {
+          this.logger.log('error', `Process error: ${err.message}`);
+          this.cleanup();
+          resolve(false);
+        });
+
+        // Wait for the ready event
+        const readyTimeout = setTimeout(() => {
+          this.logger.log('error', `Process did not send ready event within ${this.options.readyTimeoutMs}ms`);
+          this.kill();
+          resolve(false);
+        }, this.options.readyTimeoutMs);
+
+        this.once(`management:${this.options.readyEventName}`, () => {
+          clearTimeout(readyTimeout);
+          this.isRunning = true;
+          this.logger.log('info', `Bridge connected to ${this.options.binaryName}`);
+          this.emit('ready');
+          resolve(true);
+        });
+      } catch (err: any) {
+        this.logger.log('error', `Failed to spawn: ${err.message}`);
+        resolve(false);
+      }
+    });
+  }
+
+  /**
+   * Send a typed command to the Rust process and wait for the response.
+   */
+  public async sendCommand<K extends string & keyof TCommands>(
+    method: K,
+    params: TCommands[K]['params'],
+  ): Promise<TCommands[K]['result']> {
+    if (!this.childProcess || !this.isRunning) {
+      throw new Error(`${this.options.binaryName} bridge is not running`);
+    }
+
+    const id = `req_${++this.requestCounter}`;
+    const request: IManagementRequest = { id, method, params };
+
+    return new Promise<TCommands[K]['result']>((resolve, reject) => {
+      const timer = setTimeout(() => {
+        this.pendingRequests.delete(id);
+        reject(new Error(`Command '${method}' timed out after ${this.options.requestTimeoutMs}ms`));
+      }, this.options.requestTimeoutMs);
+
+      this.pendingRequests.set(id, { resolve, reject, timer });
+
+      const json = JSON.stringify(request) + '\n';
+      this.childProcess!.stdin!.write(json, (err) => {
+        if (err) {
+          clearTimeout(timer);
+          this.pendingRequests.delete(id);
+          reject(new Error(`Failed to write to stdin: ${err.message}`));
+        }
+      });
+    });
+  }
+
+  /**
+   * Kill the Rust process and clean up all resources.
+   */
+  public kill(): void {
+    if (this.childProcess) {
+      const proc = this.childProcess;
+      this.childProcess = null;
+      this.isRunning = false;
+
+      // Close readline
+      if (this.readlineInterface) {
+        this.readlineInterface.close();
+        this.readlineInterface = null;
+      }
+
+      // Reject pending requests
+      for (const [, pending] of this.pendingRequests) {
+        clearTimeout(pending.timer);
+        pending.reject(new Error(`${this.options.binaryName} process killed`));
+      }
+      this.pendingRequests.clear();
+
+      // Remove all listeners
+      proc.removeAllListeners();
+      proc.stdout?.removeAllListeners();
+      proc.stderr?.removeAllListeners();
+      proc.stdin?.removeAllListeners();
+
+      // Kill the process
+      try { proc.kill('SIGTERM'); } catch { /* already dead */ }
+
+      // Destroy stdio pipes
+      try { proc.stdin?.destroy(); } catch { /* ignore */ }
+      try { proc.stdout?.destroy(); } catch { /* ignore */ }
+      try { proc.stderr?.destroy(); } catch { /* ignore */ }
+
+      // Unref so Node doesn't wait
+      try { proc.unref(); } catch { /* ignore */ }
+
+      // Force kill after 5 seconds
+      setTimeout(() => {
+        try { proc.kill('SIGKILL'); } catch { /* already dead */ }
+      }, 5000).unref();
+    }
+  }
+
+  /**
+   * Whether the bridge is currently running.
+   */
+  public get running(): boolean {
+    return this.isRunning;
+  }
+
+  private handleLine(line: string): void {
+    if (!line) return;
+
+    let parsed: any;
+    try {
+      parsed = JSON.parse(line);
+    } catch {
+      this.logger.log('warn', `Non-JSON output: ${line}`);
+      return;
+    }
+
+    // Check if it's an event (has 'event' field, no 'id')
+    if ('event' in parsed && !('id' in parsed)) {
+      const event = parsed as IManagementEvent;
+      this.emit(`management:${event.event}`, event.data);
+      return;
+    }
+
+    // Otherwise it's a response (has 'id' field)
+    if ('id' in parsed) {
+      const response = parsed as IManagementResponse;
+      const pending = this.pendingRequests.get(response.id);
+      if (pending) {
+        clearTimeout(pending.timer);
+        this.pendingRequests.delete(response.id);
+        if (response.success) {
+          pending.resolve(response.result);
+        } else {
+          pending.reject(new Error(response.error || 'Unknown error from Rust process'));
+        }
+      }
+    }
+  }
+
+  private cleanup(): void {
+    this.isRunning = false;
+    this.childProcess = null;
+
+    if (this.readlineInterface) {
+      this.readlineInterface.close();
+      this.readlineInterface = null;
+    }
+
+    // Reject all pending requests
+    for (const [, pending] of this.pendingRequests) {
+      clearTimeout(pending.timer);
+      pending.reject(new Error(`${this.options.binaryName} process exited`));
+    }
+    this.pendingRequests.clear();
+  }
+}

ts/index.ts

@@ -1,3 +1,3 @@
-import * as plugins from './plugins.js';
-
-export let demoExport = 'Hi there! :) This is an exported string';
+export { RustBridge } from './classes.rustbridge.js';
+export { RustBinaryLocator } from './classes.rustbinarylocator.js';
+export * from './interfaces/index.js';

ts/interfaces/config.ts

@@ -0,0 +1,42 @@
+/**
+ * Minimal logger interface for the bridge.
+ */
+export interface IRustBridgeLogger {
+  log(level: string, message: string, data?: Record<string, any>): void;
+}
+
+/**
+ * Options for locating a Rust binary.
+ */
+export interface IBinaryLocatorOptions {
+  /** Name of the binary (e.g., 'rustproxy') */
+  binaryName: string;
+  /** Environment variable to check for explicit binary path (e.g., 'SMARTPROXY_RUST_BINARY') */
+  envVarName?: string;
+  /** Prefix for platform-specific npm packages (e.g., '@push.rocks/smartproxy') */
+  platformPackagePrefix?: string;
+  /** Additional local paths to search (defaults to ./rust/target/release/<binaryName> and ./rust/target/debug/<binaryName>) */
+  localPaths?: string[];
+  /** Whether to search the system PATH (default: true) */
+  searchSystemPath?: boolean;
+  /** Explicit binary path override - skips all other search */
+  binaryPath?: string;
+}
+
+/**
+ * Options for the RustBridge.
+ */
+export interface IRustBridgeOptions extends IBinaryLocatorOptions {
+  /** CLI arguments passed to the binary (default: ['--management']) */
+  cliArgs?: string[];
+  /** Timeout for individual requests in ms (default: 30000) */
+  requestTimeoutMs?: number;
+  /** Timeout for the ready event during spawn in ms (default: 10000) */
+  readyTimeoutMs?: number;
+  /** Additional environment variables for the child process */
+  env?: Record<string, string>;
+  /** Name of the ready event emitted by the Rust binary (default: 'ready') */
+  readyEventName?: string;
+  /** Optional logger instance */
+  logger?: IRustBridgeLogger;
+}

ts/interfaces/index.ts

@@ -0,0 +1,2 @@
+export * from './ipc.js';
+export * from './config.js';

ts/interfaces/ipc.ts

@@ -0,0 +1,40 @@
+/**
+ * Management request sent to the Rust binary via stdin.
+ */
+export interface IManagementRequest {
+  id: string;
+  method: string;
+  params: Record<string, any>;
+}
+
+/**
+ * Management response received from the Rust binary via stdout.
+ */
+export interface IManagementResponse {
+  id: string;
+  success: boolean;
+  result?: any;
+  error?: string;
+}
+
+/**
+ * Management event received from the Rust binary (unsolicited, no id field).
+ */
+export interface IManagementEvent {
+  event: string;
+  data: any;
+}
+
+/**
+ * Definition of a single command supported by a Rust binary.
+ */
+export interface ICommandDefinition<TParams = any, TResult = any> {
+  params: TParams;
+  result: TResult;
+}
+
+/**
+ * Map of command names to their definitions.
+ * Used to type-safe the bridge's sendCommand method.
+ */
+export type TCommandMap = Record<string, ICommandDefinition>;

ts/plugins.ts

@@ -1,7 +1,12 @@
 // native scope
 import * as path from 'path';
+import * as fs from 'fs';
+import * as childProcess from 'child_process';
+import * as readline from 'readline';
+import * as events from 'events';
+import * as url from 'url';
 
-export { path };
+export { path, fs, childProcess, readline, events, url };
 
 // @push.rocks scope
 import * as smartpath from '@push.rocks/smartpath';