chore: add baseline-js eslint plugin for browser packages (#3220)

Author: overbalance

eslint.config.mjs

@@ -19,6 +19,7 @@ import tseslint from 'typescript-eslint';
 import globals from 'globals';
 import nodePlugin from 'eslint-plugin-n';
 import yalhPlugin from 'eslint-plugin-yet-another-license-header';
+import baselinePlugin from 'eslint-plugin-baseline-js';
 
 const defaultLicense = `
 /*
@@ -201,11 +202,20 @@ const baseConfig = tseslint.config(
     files: [
       '**/examples/web/**/*',
       '**/packages/**/browser/**/*',
-      '**/packages/instrumentation-user-interaction/**/*',
+      '**/packages/auto-instrumentations-web/**/*',
       '**/packages/instrumentation-document-load/**/*',
       '**/packages/instrumentation-long-task/**/*',
+      '**/packages/instrumentation-user-interaction/**/*',
+      '**/packages/instrumentation-web-exception/**/*',
       '**/packages/plugin-react-load/**/*',
     ],
+    plugins: { 'baseline-js': baselinePlugin },
+    extends: [
+      baselinePlugin.configs['recommended-ts']({
+        available: 'widely',
+        level: 'error',
+      }),
+    ],
     languageOptions: {
       globals: {
         ...globals.browser,

package-lock.json

@@ -59,6 +59,7 @@
     "babel-plugin-istanbul": "7.0.1",
     "cross-env": "10.1.0",
     "eslint": "9.34.0",
+    "eslint-plugin-baseline-js": "0.4.0",
     "eslint-plugin-import": "2.32.0",
     "eslint-plugin-n": "17.21.3",
     "eslint-plugin-yet-another-license-header": "0.2.0",

package.json

@@ -13,6 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+// PerformanceLongTaskTiming is experimental and may change in future versions.
+// https://developer.mozilla.org/en-US/docs/Web/API/PerformanceLongTaskTiming
+/* eslint-disable baseline-js/use-baseline */
+
 import { hrTime } from '@opentelemetry/core';
 import { diag } from '@opentelemetry/api';
 import { InstrumentationBase } from '@opentelemetry/instrumentation';

packages/instrumentation-long-task/src/instrumentation.ts

@@ -16,7 +16,7 @@
 import * as tracing from '@opentelemetry/sdk-trace-base';
 
 export class DummySpanExporter implements tracing.SpanExporter {
-  export(spans: tracing.ReadableSpan[]) {}
+  export(_spans: tracing.ReadableSpan[]) {}
 
   shutdown() {
     return Promise.resolve();