From 4dab5e1eeaf9bb73408d2d1408becd7e11b3e93c Mon Sep 17 00:00:00 2001
From: Jeroen Claessens <jclaessens97@hotmail.com>
Date: Fri, 19 Jan 2024 16:19:02 +0100
Subject: [PATCH] feat: add dynamic loader for buffer (#36)

* feat: add dynamic loader for buffer

* chore: remove console.logs
---
 hyperid.js     |  9 ++++++++-
 package.json   |  8 +++++---
 test/buffer.ts | 16 ++++++++++++++++
 3 files changed, 29 insertions(+), 4 deletions(-)
 create mode 100644 test/buffer.ts

diff --git a/hyperid.js b/hyperid.js
index 7f32004..b429d2b 100644
--- a/hyperid.js
+++ b/hyperid.js
@@ -3,7 +3,14 @@
 const uuidv4 = require('./uuid-node')
 const parser = require('uuid-parse')
 const maxInt = Math.pow(2, 31) - 1
-const Buffer = require('buffer').Buffer
+const Buffer = loadBuffer()
+function loadBuffer () {
+  const b = require('buffer')
+  // use third party module if no buffer module
+  return b && b.Buffer
+    ? b.Buffer
+    : require('buffer/').Buffer
+}
 const base64Padding = Buffer.from('==', 'base64')
 
 function hyperid (opts) {
diff --git a/package.json b/package.json
index 1bb06dc..17ea012 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   ],
   "scripts": {
     "typescript": "tsc --project ./test/tsconfig.json",
-    "test": "standard && tape test/test.js test/uniqueness.js | tap-dot && npm run typescript"
+    "test": "standard && tape test/test.js test/uniqueness.js test/buffer.ts | tap-dot && npm run typescript"
   },
   "repository": {
     "type": "git",
@@ -41,11 +41,13 @@
     "standard": "^16.0.3",
     "tap-dot": "^2.0.0",
     "tape": "^5.0.0",
-    "typescript": "^4.3.4"
+    "typescript": "^4.3.4",
+    "proxyquire": "^2.1.3"
   },
   "dependencies": {
     "uuid": "^8.3.2",
-    "uuid-parse": "^1.1.0"
+    "uuid-parse": "^1.1.0",
+    "buffer": "^5.2.1"
   },
   "browser": {
     "./uuid-node.js": "./uuid-browser.js"
diff --git a/test/buffer.ts b/test/buffer.ts
new file mode 100644
index 0000000..26fd85c
--- /dev/null
+++ b/test/buffer.ts
@@ -0,0 +1,16 @@
+const hyperid = require('..')
+const test = require('tape')
+const proxyquire = require('proxyquire')
+
+test('require buffer', function (t) {
+  t.plan(2);
+
+  const instance = hyperid()
+  const id = instance()
+  t.ok(id)
+
+  proxyquire('../hyperid', { 'buffer': { Buffer: null } });
+  const instance2 = hyperid()
+  const id2 = instance2()
+  t.ok(id2)
+})