From 4cb92ce2754e2d7c7873bc81ca5e9558a4d92a6e Mon Sep 17 00:00:00 2001
From: Johannes Ewald <johannes.ewald@peerigon.com>
Date: Sat, 27 Jun 2026 17:45:01 +0200
Subject: [PATCH 1/2] perf(eslint): enable caching for lint scripts and CI

Add --cache to every eslint test script, gitignore .eslintcache files,
and restore/update eslint cache across CI runs including fixture subdirs.
---
 .github/workflows/test-and-release.yml |  9 +++++++--
 .gitignore                             |  5 ++++-
 package.json                           | 20 ++++++++++----------
 3 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/test-and-release.yml b/.github/workflows/test-and-release.yml
index 299cb60..bd3cf66 100644
--- a/.github/workflows/test-and-release.yml
+++ b/.github/workflows/test-and-release.yml
@@ -48,8 +48,13 @@ jobs:
       - name: 🗄 Cache .eslintcache
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # main
         with:
-          path: .eslintcache
-          key: eslintcache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
+          path: "**/.eslintcache"
+          # Unique key per run so the cache is refreshed with the latest results,
+          # while restore-keys reuses the most recent previous cache as a base.
+          key: eslintcache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}-${{ github.run_id }}
+          restore-keys: |
+            eslintcache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}-
+            eslintcache-${{ runner.os }}-
 
       - name: 🔍 Install dependencies
         if: steps.cache-node_modules.outputs.cache-hit != 'true'
diff --git a/.gitignore b/.gitignore
index 1f0150c..cc8cb9c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,7 @@ build/Release
 node_modules
 
 # Generated by TypeScript
-dist
\ No newline at end of file
+dist
+
+# ESLint cache
+.eslintcache
\ No newline at end of file
diff --git a/package.json b/package.json
index 5a83ecb..7a6d664 100644
--- a/package.json
+++ b/package.json
@@ -66,17 +66,17 @@
     "release": "semantic-release",
     "test": "run-p test:* test:presets:* test:rules:* test:styles:*",
     "test:format": "prettier --check .",
-    "test:lint": "eslint --max-warnings 0 .",
+    "test:lint": "eslint --cache --max-warnings 0 .",
     "test:publishable": "node ./semantic-release/verify-publishable.js",
-    "test:presets:javascript": "cd eslint/presets/javascript.test; eslint --max-warnings 0 .",
-    "test:presets:typescript": "cd eslint/presets/typescript.test; eslint --max-warnings 0 .",
-    "test:presets:typescript-react": "cd eslint/presets/typescript-react.test; eslint --max-warnings 0 .",
-    "test:rules:vitest": "cd eslint/rules/vitest.test; eslint --max-warnings 0 .",
-    "test:styles:jsx-no-literals": "cd eslint/styles/jsx-no-literals.test; eslint --max-warnings 0 .",
-    "test:styles:no-default-export": "cd eslint/styles/no-default-export.test; eslint --max-warnings 0 .",
-    "test:styles:no-null": "cd eslint/styles/no-null.test; eslint --max-warnings 0 .",
-    "test:styles:prefer-array-shorthand": "cd eslint/styles/prefer-array-shorthand.test; eslint --max-warnings 0 .",
-    "test:styles:prefer-interface": "cd eslint/styles/prefer-interface.test; eslint --max-warnings 0 .",
+    "test:presets:javascript": "cd eslint/presets/javascript.test; eslint --cache --max-warnings 0 .",
+    "test:presets:typescript": "cd eslint/presets/typescript.test; eslint --cache --max-warnings 0 .",
+    "test:presets:typescript-react": "cd eslint/presets/typescript-react.test; eslint --cache --max-warnings 0 .",
+    "test:rules:vitest": "cd eslint/rules/vitest.test; eslint --cache --max-warnings 0 .",
+    "test:styles:jsx-no-literals": "cd eslint/styles/jsx-no-literals.test; eslint --cache --max-warnings 0 .",
+    "test:styles:no-default-export": "cd eslint/styles/no-default-export.test; eslint --cache --max-warnings 0 .",
+    "test:styles:no-null": "cd eslint/styles/no-null.test; eslint --cache --max-warnings 0 .",
+    "test:styles:prefer-array-shorthand": "cd eslint/styles/prefer-array-shorthand.test; eslint --cache --max-warnings 0 .",
+    "test:styles:prefer-interface": "cd eslint/styles/prefer-interface.test; eslint --cache --max-warnings 0 .",
     "test:types": "tsc --noEmit"
   },
   "dependencies": {

From 3e07324e421c4366989880c4ad6a015beff81ead Mon Sep 17 00:00:00 2001
From: Johannes Ewald <johannes.ewald@peerigon.com>
Date: Sun, 28 Jun 2026 14:20:09 +0200
Subject: [PATCH 2/2] Apply PR feedback

---
 .github/workflows/test-and-release.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/test-and-release.yml b/.github/workflows/test-and-release.yml
index bd3cf66..aa63b96 100644
--- a/.github/workflows/test-and-release.yml
+++ b/.github/workflows/test-and-release.yml
@@ -49,9 +49,9 @@ jobs:
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # main
         with:
           path: "**/.eslintcache"
-          # Unique key per run so the cache is refreshed with the latest results,
+          # Unique key per commit so the cache is refreshed when code changes,
           # while restore-keys reuses the most recent previous cache as a base.
-          key: eslintcache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}-${{ github.run_id }}
+          key: eslintcache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}-${{ github.sha }}
           restore-keys: |
             eslintcache-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}-
             eslintcache-${{ runner.os }}-