Streaming: replace npmlog with pino & pino-http (#27828)

streaming/.eslintrc.js

@@ -15,7 +15,18 @@ module.exports = defineConfig({
     ecmaVersion: 2021,
   },
   rules: {
+    // In the streaming server we need to delete some variables to ensure
+    // garbage collection takes place on the values referenced by those objects;
+    // The alternative is to declare the variable as nullable, but then we need
+    // to assert it's in existence before every use, which becomes much harder
+    // to maintain.
+    'no-delete-var': 'off',
+
+    // The streaming server is written in commonjs, not ESM for now:
     'import/no-commonjs': 'off',
+
+    // This overrides the base configuration for this rule to pick up
+    // dependencies for the streaming server from the correct package.json file.
     'import/no-extraneous-dependencies': [
       'error',
       {