diff --git a/extensions/authTest/webpack.config.js b/extensions/authTest/webpack.config.js
index de29f9a767..7b63d149fd 100644
--- a/extensions/authTest/webpack.config.js
+++ b/extensions/authTest/webpack.config.js
@@ -12,5 +12,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/azurePublish/webpack.config.js b/extensions/azurePublish/webpack.config.js
index 29e154898e..3e1f8e5a58 100644
--- a/extensions/azurePublish/webpack.config.js
+++ b/extensions/azurePublish/webpack.config.js
@@ -18,5 +18,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/githubAuth/webpack.config.js b/extensions/githubAuth/webpack.config.js
index de29f9a767..7b63d149fd 100644
--- a/extensions/githubAuth/webpack.config.js
+++ b/extensions/githubAuth/webpack.config.js
@@ -12,5 +12,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/localPublish/webpack.config.js b/extensions/localPublish/webpack.config.js
index 29e154898e..3e1f8e5a58 100644
--- a/extensions/localPublish/webpack.config.js
+++ b/extensions/localPublish/webpack.config.js
@@ -18,5 +18,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/mockRemotePublish/webpack.config.js b/extensions/mockRemotePublish/webpack.config.js
index 56c37b2e3e..aae7d4d46b 100644
--- a/extensions/mockRemotePublish/webpack.config.js
+++ b/extensions/mockRemotePublish/webpack.config.js
@@ -15,5 +15,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/mongoStorage/webpack.config.js b/extensions/mongoStorage/webpack.config.js
index 56c37b2e3e..aae7d4d46b 100644
--- a/extensions/mongoStorage/webpack.config.js
+++ b/extensions/mongoStorage/webpack.config.js
@@ -15,5 +15,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/runtimes/webpack.config.js b/extensions/runtimes/webpack.config.js
index 29e154898e..3e1f8e5a58 100644
--- a/extensions/runtimes/webpack.config.js
+++ b/extensions/runtimes/webpack.config.js
@@ -18,5 +18,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/sample-ui-plugin/webpack.config.js b/extensions/sample-ui-plugin/webpack.config.js
index 4500b95cf6..6b2f128f8d 100644
--- a/extensions/sample-ui-plugin/webpack.config.js
+++ b/extensions/sample-ui-plugin/webpack.config.js
@@ -44,6 +44,7 @@ module.exports = [
     },
     resolve: {
       extensions: ['.js', '.ts', '.tsx', '.json'],
+      mainFields: ['main'],
     },
   },
 ];
diff --git a/extensions/samples/webpack.config.js b/extensions/samples/webpack.config.js
index 29e154898e..3e1f8e5a58 100644
--- a/extensions/samples/webpack.config.js
+++ b/extensions/samples/webpack.config.js
@@ -18,5 +18,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/vacore/webpack.config.js b/extensions/vacore/webpack.config.js
index 29e154898e..3e1f8e5a58 100644
--- a/extensions/vacore/webpack.config.js
+++ b/extensions/vacore/webpack.config.js
@@ -18,5 +18,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };
diff --git a/extensions/webRoute/webpack.config.js b/extensions/webRoute/webpack.config.js
index de29f9a767..7b63d149fd 100644
--- a/extensions/webRoute/webpack.config.js
+++ b/extensions/webRoute/webpack.config.js
@@ -12,5 +12,6 @@ module.exports = {
   },
   resolve: {
     extensions: ['.js', '.ts', '.tsx', '.json'],
+    mainFields: ['main'],
   },
 };