refactor(lint): add eslint-plugin-baseline-js for browser compatibility

.github/workflows/ci-nodejs.yml

@@ -745,10 +745,10 @@ jobs:
         run: |
           npm ci
 
-      - name: TSC
+      - name: Type check
         if: ${{ env.TYPE_CHECK_PREVIOUSLY_PASSED != 'true' }}
         run: |
-          npm run sdk:tsc:check
+          npm run sdk:check
 
       - name: Cache successful type check results
         if: ${{ success() }}
@@ -800,15 +800,25 @@ jobs:
         run: |
           npm ci
 
-      - name: Build SDK and CLI
+      - name: Build SDK
         if: ${{ env.VALIDATE_PREVIOUSLY_PASSED != 'true' }}
         run: |
-          npm run compile
+          npm run sdk:compile
+
+      - name: Validate SDK
+        if: ${{ env.VALIDATE_PREVIOUSLY_PASSED != 'true' }}
+        run: |
+          npm run sdk:validate
+
+      - name: Build CLI
+        if: ${{ env.VALIDATE_PREVIOUSLY_PASSED != 'true' }}
+        run: |
+          npm run cli:compile
 
-      - name: Validate SDK and CLI
+      - name: Validate CLI
         if: ${{ env.VALIDATE_PREVIOUSLY_PASSED != 'true' }}
         run: |
-          npm run validate
+          npm run cli:validate
 
       - name: Build Demo
         if: ${{ env.VALIDATE_PREVIOUSLY_PASSED != 'true' }}

eslint.config.js

@@ -0,0 +1,25 @@
+import baselinePlugin from 'eslint-plugin-baseline-js';
+import tseslint from 'typescript-eslint';
+
+export default [
+  {
+    files: ['src/**/*.{js,ts}'],
+    ignores: ['**/*.test.ts', '**/*.spec.ts', '**/testUtils/**'],
+    languageOptions: {
+      parser: tseslint.parser,
+      // enables type-aware linting to detect instance method usage
+      parserOptions: {
+        projectService: true,
+      },
+    },
+    plugins: {
+      'baseline-js': baselinePlugin,
+    },
+    rules: {
+      ...baselinePlugin.configs['recommended-ts']({
+        available: 'widely',
+        level: 'error',
+      }).rules,
+    },
+  },
+];

eslint.dist.config.js

@@ -0,0 +1,26 @@
+import baselinePlugin from 'eslint-plugin-baseline-js';
+
+// Compiled output - catches non-baseline APIs from dependencies
+export default [
+  {
+    files: ['dist/**/*.js', 'dist/**/*.cjs'],
+    ignores: ['dist/**/*.d.ts', 'dist/**/*.d.cts'],
+    plugins: {
+      'baseline-js': baselinePlugin,
+    },
+    rules: {
+      'baseline-js/use-baseline': [
+        'error',
+        {
+          available: 'widely',
+          ignoreFeatures: [
+            // compression-streams: widely available since Nov 2025, plugin data stale
+            'compression-streams',
+            // proto: deprecated but universally supported, used by bundled dependencies
+            'proto',
+          ],
+        },
+      ],
+    },
+  },
+];

lefthook.yml

@@ -5,7 +5,7 @@ pre-commit:
     lint:
       run: npm run sdk:lint:fix
     typecheck:
-      run: npm run sdk:tsc:check
+      run: npm run sdk:check:tsc
 commit-msg:
   commands:
     commitlint: