From 4b47c32b544e9cd7742e7e51333f46e687c694c8 Mon Sep 17 00:00:00 2001
From: Konstantin Tieber <46342664+konstantintieber@users.noreply.github.com>
Date: Tue, 4 Aug 2026 16:41:56 +0200
Subject: [PATCH] chore(core): Fix memory-intensive dev commands in root
 package.json (#35521)

---
 package.json                           |  9 +++++----
 scripts/dev-command-removed-notice.mjs | 25 +++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 4 deletions(-)
 create mode 100644 scripts/dev-command-removed-notice.mjs

diff --git a/package.json b/package.json
index 15511e53269..7356d469039 100644
--- a/package.json
+++ b/package.json
@@ -21,11 +21,12 @@
     "build:docker:clean": "TURBO_FORCE=true node scripts/build-n8n.mjs && DOCKER_BUILD_NO_CACHE=true DOCKER_BUILD_BASE_IMAGE=true node scripts/dockerize-n8n.mjs",
     "build:docker:test": "node scripts/build-n8n.mjs && node scripts/dockerize-n8n.mjs && turbo run test:container:standard --filter=n8n-playwright",
     "typecheck": "turbo typecheck",
-    "dev": "turbo run dev --concurrency=150 --env-mode=loose --filter=!@n8n/design-system --filter=!@n8n/chat --filter=!@n8n/task-runner",
-    "dev:be": "turbo run dev --concurrency=150 --env-mode=loose --filter=!@n8n/design-system --filter=!@n8n/chat --filter=!@n8n/task-runner --filter=!n8n-editor-ui",
+    "dev": "node scripts/dev-command-removed-notice.mjs",
+    "dev:be": "turbo run dev --env-mode=loose --log-prefix=none --filter=n8n",
     "dev:ai": "turbo run dev --concurrency=150 --env-mode=loose --filter=@n8n/n8n-nodes-langchain --filter=n8n --filter=n8n-core",
-    "dev:fe": "run-p start \"dev:fe:editor --filter=@n8n/design-system\"",
-    "dev:fe:editor": "turbo run dev --concurrency=150 --env-mode=loose --filter=n8n-editor-ui",
+    "dev:fe": "run-p start dev:fe:editor",
+    "dev:fe:editor": "turbo run dev --env-mode=loose --filter=n8n-editor-ui",
+    "dev:design-system": "turbo run dev --env-mode=loose --log-prefix=none --filter=@n8n/design-system",
     "dev:e2e": "pnpm --filter=n8n-playwright dev --ui",
     "dev-metrics:opt-in": "node scripts/dev-metrics/setup.mjs --enable",
     "dev-metrics:status": "node scripts/dev-metrics/setup.mjs --status",
diff --git a/scripts/dev-command-removed-notice.mjs b/scripts/dev-command-removed-notice.mjs
new file mode 100644
index 00000000000..d146562956b
--- /dev/null
+++ b/scripts/dev-command-removed-notice.mjs
@@ -0,0 +1,25 @@
+#!/usr/bin/env node
+
+console.error(`
+The root-level dev command is no longer supported.
+Use the faster and more granular dev commands inside the n8n and n8n-editor-ui packages.
+
++--------------------------------------------------------------------------+
+| Backend (hot reload packages/cli, frontend served from dist output)      |
+|                                                                          |
+|   pnpm dev:be                                                            |
+|                                                                          |
++--------------------------------------------------------------------------+
+| Frontend (hot reload vue app, backend served from dist output)           |
+|                                                                          |
+|   pnpm dev:fe                                                            |
+|                                                                          |
++--------------------------------------------------------------------------+
+| Backend & Frontend with hot reloading                                    |
+|                                                                          |
+|   pnpm dev:be                                                            |
+|   pnpm dev:fe:editor                                                     |
+|                                                                          |
++--------------------------------------------------------------------------+
+`);
+process.exit(0);