From 711ae183f7b61be36128e9da0e424d874d836015 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=98=BF=E8=B1=AA?= <yanyuhao.joy@bytedance.com>
Date: Fri, 18 Nov 2022 05:24:15 +0800
Subject: [PATCH] fix: remove @parcel/utils dep in @parcel/graph (#8630)

---
 packages/core/graph/package.json         |  1 -
 packages/core/graph/src/AdjacencyList.js |  2 +-
 packages/core/graph/src/shared-buffer.js | 24 ++++++++++++++++++++++++
 3 files changed, 25 insertions(+), 2 deletions(-)
 create mode 100644 packages/core/graph/src/shared-buffer.js

diff --git a/packages/core/graph/package.json b/packages/core/graph/package.json
index dde6e479995..38ed9abce37 100644
--- a/packages/core/graph/package.json
+++ b/packages/core/graph/package.json
@@ -20,7 +20,6 @@
     "node": ">= 12.0.0"
   },
   "dependencies": {
-    "@parcel/utils": "2.8.0",
     "nullthrows": "^1.1.1"
   }
 }
diff --git a/packages/core/graph/src/AdjacencyList.js b/packages/core/graph/src/AdjacencyList.js
index 803655099ab..73a18ae7d5f 100644
--- a/packages/core/graph/src/AdjacencyList.js
+++ b/packages/core/graph/src/AdjacencyList.js
@@ -1,7 +1,7 @@
 // @flow
 import assert from 'assert';
 import nullthrows from 'nullthrows';
-import {SharedBuffer} from '@parcel/utils';
+import {SharedBuffer} from './shared-buffer';
 import {fromNodeId, toNodeId} from './types';
 import {ALL_EDGE_TYPES, type NullEdgeType, type AllEdgeTypes} from './Graph';
 import type {NodeId} from './types';
diff --git a/packages/core/graph/src/shared-buffer.js b/packages/core/graph/src/shared-buffer.js
new file mode 100644
index 00000000000..64cadd68682
--- /dev/null
+++ b/packages/core/graph/src/shared-buffer.js
@@ -0,0 +1,24 @@
+// @flow
+/* global MessageChannel:readonly */
+// Copy from @parcel/utils to fix: https://github.com/stackblitz/core/issues/1855
+export let SharedBuffer: Class<ArrayBuffer> | Class<SharedArrayBuffer>;
+
+// $FlowFixMe[prop-missing]
+if (process.browser) {
+  SharedBuffer = ArrayBuffer;
+  // Safari has removed the constructor
+  if (typeof SharedArrayBuffer !== 'undefined') {
+    let channel = new MessageChannel();
+    try {
+      // Firefox might throw when sending the Buffer over a MessagePort
+      channel.port1.postMessage(new SharedArrayBuffer(0));
+      SharedBuffer = SharedArrayBuffer;
+    } catch (_) {
+      // NOOP
+    }
+    channel.port1.close();
+    channel.port2.close();
+  }
+} else {
+  SharedBuffer = SharedArrayBuffer;
+}