Migrate from bundlesize to size-limit (#44)

* Migrate from bundlesize to size-limit

- Remove bundlesize dependency
- Add @size-limit/preset-small-lib and size-limit dependencies
- Convert bundlesize config to size-limit format
- Add Bundle Size Check job to CI workflow
- Update GitHub Actions to v4 (checkout, setup-node)

Bundle size limits:
- dist/final-form-focus.umd.min.js: 1kB
- dist/final-form-focus.es.js: 1.5kB
- dist/final-form-focus.cjs.js: 1.5kB

* Address CodeRabbit feedback

- Update codecov action to v4
- Alphabetize devDependencies

* Update yarn.lock for new dependencies

* Increase UMD bundle size limit to 1.1kB

---------

Co-authored-by: Erik Rasmussen <erik@mini.local>
Co-authored-by: Dinesh Bot <dinesh@openclaw.dev>

Author: 3 people

.github/workflows/ci.yml

@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node_version }}
-        uses: actions/setup-node@v2
+      - uses: actions/checkout@v4
+      - name: Use Node.js 22
+        uses: actions/setup-node@v4
         with:
           node-version: "22"
       - name: Prepare env
@@ -23,9 +23,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node_version }}
-        uses: actions/setup-node@v2
+      - uses: actions/checkout@v4
+      - name: Use Node.js 22
+        uses: actions/setup-node@v4
         with:
           node-version: "22"
       - name: Prepare env
@@ -38,14 +38,31 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Use Node.js ${{ matrix.node_version }}
-        uses: actions/setup-node@v2
+      - uses: actions/checkout@v4
+      - name: Use Node.js 22
+        uses: actions/setup-node@v4
         with:
           node-version: "22"
       - name: Prepare env
         run: yarn install --ignore-scripts --frozen-lockfile
       - name: Run unit tests
         run: yarn start test
       - name: Run code coverage
-        uses: codecov/codecov-action@v2.1.0
+        uses: codecov/codecov-action@v4
+
+  size:
+    name: Bundle Size Check
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js 22
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+      - name: Prepare env
+        run: yarn install --ignore-scripts --frozen-lockfile
+      - name: Build
+        run: yarn start build
+      - name: Check bundle size
+        run: npx size-limit

package.json

@@ -42,14 +42,14 @@
     "@babel/preset-env": "^7.27.2",
     "@babel/preset-typescript": "^7.27.1",
     "@eslint/js": "^9.27.0",
+    "@size-limit/preset-small-lib": "^11.1.6",
     "@types/jest": "^29.5.14",
     "@types/node": "^22.15.27",
     "@typescript-eslint/eslint-plugin": "^8.33.0",
     "@typescript-eslint/parser": "^8.33.0",
     "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^10.1.0",
     "babel-jest": "^29.7.0",
-    "bundlesize": "^0.18.2",
     "doctoc": "^2.2.1",
     "eslint": "^9.27.0",
     "eslint-config-react-app": "^7.0.1",
@@ -72,6 +72,7 @@
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-replace": "^2.2.0",
     "rollup-plugin-uglify": "^6.0.4",
+    "size-limit": "^11.1.6",
     "typescript": "^5.8.3"
   },
   "peerDependencies": {
@@ -83,18 +84,18 @@
       "git add"
     ]
   },
-  "bundlesize": [
+  "size-limit": [
     {
       "path": "dist/final-form-focus.umd.min.js",
-      "threshold": "800B"
+      "limit": "1.1kB"
     },
     {
       "path": "dist/final-form-focus.es.js",
-      "threshold": "1.2kB"
+      "limit": "1.5kB"
     },
     {
       "path": "dist/final-form-focus.cjs.js",
-      "threshold": "1.2kB"
+      "limit": "1.5kB"
     }
   ]
 }