Convert the source editor module to TypeScript (#6858)

GitOrigin-RevId: 37863a00b3af0823a404f42c0540cb4508c698b6

services/web/.eslintrc

@@ -45,7 +45,7 @@
     },
     {
       // Test specific rules
-      "files": ["**/test/**/*.js"],
+      "files": ["**/test/**/*.*"],
       "plugins": [
         "mocha",
         "chai-expect",