From 0ef8dd61a802f9812f46f9c41b00e590896d7926 Mon Sep 17 00:00:00 2001
From: narawat <narawat@gmail.com>
Date: Sun, 8 Mar 2026 11:34:10 +0700
Subject: [PATCH] use crypto for JS

---
 docs/updated_architecture.md   |  4 ++--
 docs/updated_implementation.md | 20 +++++++++++++++-----
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/docs/updated_architecture.md b/docs/updated_architecture.md
index 6b0763e..8b57af8 100644
--- a/docs/updated_architecture.md
+++ b/docs/updated_architecture.md
@@ -587,7 +587,7 @@ class NATSClient {
 | Package | Purpose |
 |---------|---------|
 | `nats` | Core NATS functionality (nats.js) |
-| `uuid` | UUID generation |
+| `crypto` (built-in) | UUID generation (Node.js) |
 | `node-fetch` or `axios` | HTTP client for file server |
 | `apache-arrow` | Arrow IPC serialization |
 
@@ -596,7 +596,7 @@ class NATSClient {
 | Package | Purpose |
 |---------|---------|
 | `nats` | Browser-compatible NATS client |
-| `uuid` | UUID generation |
+| `crypto` (built-in) | UUID generation (browser) |
 | `fetch` (native) | HTTP client for file server |
 | `apache-arrow` | Arrow IPC serialization |
 
diff --git a/docs/updated_implementation.md b/docs/updated_implementation.md
index 82b703d..ed21567 100644
--- a/docs/updated_implementation.md
+++ b/docs/updated_implementation.md
@@ -581,20 +581,24 @@ Pkg.add("Dates")
 ### JavaScript Dependencies (Node.js)
 
 ```bash
-npm install nats uuid apache-arrow node-fetch
+npm install nats apache-arrow node-fetch
 # or
-yarn add nats uuid apache-arrow node-fetch
+yarn add nats apache-arrow node-fetch
 ```
 
+**Note:** Node.js has a built-in `crypto` module for UUID generation, so no external `uuid` package is needed.
+
 ### JavaScript Dependencies (Browser)
 
 ```bash
-npm install nats uuid apache-arrow
+npm install nats apache-arrow
 # or use CDN:
 # https://unpkg.com/nats-js/dist/bundle/nats.min.js
 # https://unpkg.com/apache-arrow/arrow.min.js
 ```
 
+**Note:** For browser UUID generation, use the built-in `crypto.randomUUID()` API (available in modern browsers) or a lightweight alternative like `uuidv4` package.
+
 ### Python Dependencies (Desktop)
 
 ```bash
@@ -1099,9 +1103,12 @@ end
 ```javascript
 // natsbridge.js
 const nats = require('nats');
-const { v4: uuidv4 } = require('uuid');
+const crypto = require('crypto');
 const fetch = require('node-fetch');
 
+// UUID generation using built-in crypto module
+const uuidv4 = () => crypto.randomUUID();
+
 const DEFAULT_SIZE_THRESHOLD = 1_000_000;
 const DEFAULT_BROKER_URL = 'nats://localhost:4222';
 const DEFAULT_FILESERVER_URL = 'http://localhost:8080';
@@ -1152,10 +1159,13 @@ module.exports = {
 
 ```javascript
 const nats = require('nats');
-const { v4: uuidv4 } = require('uuid');
+const crypto = require('crypto');
 const fetch = require('node-fetch');
 const arrow = require('apache-arrow');
 
+// UUID generation using built-in crypto module
+const uuidv4 = () => crypto.randomUUID();
+
 const DEFAULT_SIZE_THRESHOLD = 1_000_000;
 const DEFAULT_BROKER_URL = 'nats://localhost:4222';
 const DEFAULT_FILESERVER_URL = 'http://localhost:8080';