diff --git a/.gitignore b/.gitignore
index 13b8318be2..ccd8a1e350 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@ typings/
 # Generated
 dist/
 .tshy-build
+.tshy
 
 # Import location artifacts
 packages/rxjs/ajax/
diff --git a/packages/observable/.tshy/browser.json b/packages/observable/.tshy/browser.json
deleted file mode 100644
index 32e74e04ec..0000000000
--- a/packages/observable/.tshy/browser.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "extends": "./build.json",
-  "include": [
-    "../src/**/*.ts",
-    "../src/**/*.mts",
-    "../src/**/*.tsx"
-  ],
-  "exclude": [],
-  "compilerOptions": {
-    "outDir": "../.tshy-build/browser"
-  }
-}
diff --git a/packages/observable/.tshy/build.json b/packages/observable/.tshy/build.json
deleted file mode 100644
index c51b7f5305..0000000000
--- a/packages/observable/.tshy/build.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "extends": "../tsconfig.json",
-  "compilerOptions": {
-    "rootDir": "../src",
-    "target": "es2022",
-    "module": "nodenext",
-    "moduleResolution": "nodenext"
-  }
-}
diff --git a/packages/observable/.tshy/commonjs.json b/packages/observable/.tshy/commonjs.json
deleted file mode 100644
index 5ace94d041..0000000000
--- a/packages/observable/.tshy/commonjs.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "extends": "./build.json",
-  "include": [
-    "../src/**/*.ts",
-    "../src/**/*.cts",
-    "../src/**/*.tsx"
-  ],
-  "exclude": [
-    "../src/**/*.mts"
-  ],
-  "compilerOptions": {
-    "outDir": "../.tshy-build/commonjs"
-  }
-}
diff --git a/packages/observable/.tshy/esm.json b/packages/observable/.tshy/esm.json
deleted file mode 100644
index ff5264e692..0000000000
--- a/packages/observable/.tshy/esm.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "extends": "./build.json",
-  "include": [
-    "../src/**/*.ts",
-    "../src/**/*.mts",
-    "../src/**/*.tsx"
-  ],
-  "exclude": [],
-  "compilerOptions": {
-    "outDir": "../.tshy-build/esm"
-  }
-}
diff --git a/packages/observable/.tshy/webpack.json b/packages/observable/.tshy/webpack.json
deleted file mode 100644
index 91b8571ecf..0000000000
--- a/packages/observable/.tshy/webpack.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "extends": "./build.json",
-  "include": [
-    "../src/**/*.ts",
-    "../src/**/*.cts",
-    "../src/**/*.tsx"
-  ],
-  "exclude": [
-    "../src/**/*.mts"
-  ],
-  "compilerOptions": {
-    "outDir": "../.tshy-build/webpack"
-  }
-}
diff --git a/packages/observable/package.json b/packages/observable/package.json
index e296727097..8c8b1880cd 100644
--- a/packages/observable/package.json
+++ b/packages/observable/package.json
@@ -38,25 +38,11 @@
     "exports": {
       "./package.json": "./package.json",
       ".": "./src/index.ts"
-    },
-    "esmDialects": [
-      "browser"
-    ],
-    "commonjsDialects": [
-      "webpack"
-    ]
+    }
   },
   "exports": {
     "./package.json": "./package.json",
     ".": {
-      "browser": {
-        "types": "./dist/browser/index.d.ts",
-        "default": "./dist/browser/index.js"
-      },
-      "webpack": {
-        "types": "./dist/webpack/index.d.ts",
-        "default": "./dist/webpack/index.js"
-      },
       "import": {
         "types": "./dist/esm/index.d.ts",
         "default": "./dist/esm/index.js"
diff --git a/packages/rxjs/integration/import/fixtures/browser/index.html b/packages/rxjs/integration/import/fixtures/browser/index.html
index 7f50d35533..f7d85493e1 100644
--- a/packages/rxjs/integration/import/fixtures/browser/index.html
+++ b/packages/rxjs/integration/import/fixtures/browser/index.html
@@ -8,7 +8,7 @@
   <script type="importmap">
     {
       "imports": {
-        "@rxjs/observable": "./node_modules/@rxjs/observable/dist/browser/index.js"
+        "@rxjs/observable": "./node_modules/@rxjs/observable/dist/esm/index.js"
       }
     }
   </script>