From fd2b5d5599192200b8bd1b93b767f23afae29fba Mon Sep 17 00:00:00 2001
From: Manuel Raynaud <manu@raynaud.io>
Date: Wed, 30 Sep 2026 14:00:28 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=91=B7(ci)=20lint,=20typecheck,=20build?=
 =?UTF-8?q?=20and=20test=20the=20collaboration=20server?=
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The CI was not setup for yhub, we added the missing jobs: lint, test and
typecheck
---
 .github/workflows/yhub.yml | 69 ++++++++++++++++++++++++++++++++++++++
 CHANGELOG.md               |  1 +
 2 files changed, 70 insertions(+)
 create mode 100644 .github/workflows/yhub.yml

diff --git a/.github/workflows/yhub.yml b/.github/workflows/yhub.yml
new file mode 100644
index 000000000..5be422a5c
--- /dev/null
+++ b/.github/workflows/yhub.yml
@@ -0,0 +1,69 @@
+name: Collaboration Server Workflow
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - "*"
+
+permissions:
+  contents: read
+
+# src/yhub-server is a standalone package (its own package.json and yarn.lock),
+# not a workspace of src/frontend: it gets its own install. Its image is built
+# by docker-hub.yml, and the backend integration tests in impress.yml run
+# against a live instance of it. This workflow runs the package's own checks.
+defaults:
+  run:
+    working-directory: src/yhub-server
+
+jobs:
+  lint-yhub:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
+        with:
+          node-version: "22.x"
+          cache: yarn
+          cache-dependency-path: src/yhub-server/yarn.lock
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Lint
+        run: yarn lint
+
+      - name: Typecheck
+        run: yarn typecheck
+
+      # the image compiles with tsconfig.build.json (rootDir ./src, emits),
+      # which can fail where the typecheck passes: build too so a break shows
+      # up here rather than in the image build
+      - name: Build
+        run: yarn build
+
+  test-yhub:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
+        with:
+          node-version: "22.x"
+          cache: yarn
+          cache-dependency-path: src/yhub-server/yarn.lock
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      # unit suite: @y/hub is mocked, no redis, postgres or S3 needed
+      - name: Test
+        run: yarn test
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e03dd04d..3174bcb82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to
 
 ### Added
 
+- 👷(ci) lint, typecheck, build and test the collaboration server (yhub)
 - ✨(backend) add mention endpoint with cooldown-limited email 
   notification #2447
 - 🚩(setting) add feature flag on Duplicate with Children #2721