chore: Add size-limit check on Pull Requests

.github/workflows/size-limit.yml

@@ -0,0 +1,29 @@
+name: Size Limit
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  size-limit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
+        with:
+          cache: 'npm'
+          cache-dependency-path: |
+            package-lock.json
+          node-version: 22
+
+      - name: Check bundle size
+        uses: andresz1/size-limit-action@94bc357df29c36c8f8d50ea497c3e225c3c95d1d # v1.8.0
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          build_script: compile

.size-limit.js

@@ -0,0 +1,38 @@
+module.exports = [
+  {
+    name: '@opentelemetry/api',
+    path: 'api/build/esm/index.js',
+    import: '{ trace, metrics, context, propagation }',
+    gzip: true,
+  },
+  {
+    name: '@opentelemetry/api (full)',
+    path: 'api/build/esm/index.js',
+    import: '*',
+    gzip: true,
+  },
+  {
+    name: '@opentelemetry/core',
+    path: 'packages/opentelemetry-core/build/esm/index.js',
+    import: '{ hrTime, hrTimeDuration, ExportResultCode }',
+    gzip: true,
+  },
+  {
+    name: '@opentelemetry/core (full)',
+    path: 'packages/opentelemetry-core/build/esm/index.js',
+    import: '*',
+    gzip: true,
+  },
+  {
+    name: '@opentelemetry/semantic-conventions',
+    path: 'semantic-conventions/build/esm/index.js',
+    import: '{ ATTR_HTTP_REQUEST_METHOD, ATTR_URL_PATH, ATTR_HTTP_RESPONSE_STATUS_CODE }',
+    gzip: true,
+  },
+  {
+    name: '@opentelemetry/semantic-conventions (full)',
+    path: 'semantic-conventions/build/esm/index.js',
+    import: '*',
+    gzip: true,
+  },
+];