diff --git a/src/compiler/factory/nodeFactory.ts b/src/compiler/factory/nodeFactory.ts
index 713df9c86780a..2ac0fb4840ad0 100644
--- a/src/compiler/factory/nodeFactory.ts
+++ b/src/compiler/factory/nodeFactory.ts
@@ -14,6 +14,13 @@ namespace ts {
         NoOriginalNode = 1 << 3,
     }
 
+    const nodeFactoryPatchers: ((factory: NodeFactory) => void)[] = [];
+
+    /* @internal */
+    export function addNodeFactoryPatcher(fn: (factory: NodeFactory) => void) {
+        nodeFactoryPatchers.push(fn);
+    }
+
     /**
      * Creates a `NodeFactory` that can be used to create and update a syntax tree.
      * @param flags Flags that control factory behavior.
@@ -161,11 +168,11 @@ namespace ts {
             createObjectLiteralExpression,
             updateObjectLiteralExpression,
             createPropertyAccessExpression: flags & NodeFactoryFlags.NoIndentationOnFreshPropertyAccess ?
-                (expression, name) => setEmitFlags(createPropertyAccessExpression(expression, name), EmitFlags.NoIndentation) :
+                (expression: Expression, name: string | MemberName) => setEmitFlags(createPropertyAccessExpression(expression, name), EmitFlags.NoIndentation) :
                 createPropertyAccessExpression,
             updatePropertyAccessExpression,
             createPropertyAccessChain: flags & NodeFactoryFlags.NoIndentationOnFreshPropertyAccess ?
-                (expression, questionDotToken, name) => setEmitFlags(createPropertyAccessChain(expression, questionDotToken, name), EmitFlags.NoIndentation) :
+            (expression: Expression, questionDotToken: QuestionDotToken | undefined, name: string | MemberName) => setEmitFlags(createPropertyAccessChain(expression, questionDotToken, name), EmitFlags.NoIndentation) :
                 createPropertyAccessChain,
             updatePropertyAccessChain,
             createElementAccessExpression,
@@ -534,7 +541,9 @@ namespace ts {
             liftToBlock,
             mergeLexicalEnvironment,
             updateModifiers,
-        };
+        } as any;
+
+        forEach(nodeFactoryPatchers, fn => fn(factory));
 
         return factory;
 
diff --git a/src/deprecatedCompat/4.2/abstractConstructorTypes.ts b/src/deprecatedCompat/4.2/abstractConstructorTypes.ts
index b2645d9ffea8b..89a2c1084f6ef 100644
--- a/src/deprecatedCompat/4.2/abstractConstructorTypes.ts
+++ b/src/deprecatedCompat/4.2/abstractConstructorTypes.ts
@@ -59,16 +59,8 @@ namespace ts {
 
     // Patch `createNodeFactory` because it creates the factories that are provided to transformers
     // in the public API.
-
-    const prevCreateNodeFactory = createNodeFactory;
-
-    // eslint-disable-next-line @typescript-eslint/no-unnecessary-qualifier
-    ts.createNodeFactory = (flags, baseFactory) => {
-        const factory = prevCreateNodeFactory(flags, baseFactory);
-        patchNodeFactory(factory);
-        return factory;
-    };
+    addNodeFactoryPatcher(patchNodeFactory);
 
     // Patch `ts.factory` because its public
     patchNodeFactory(factory);
-}
\ No newline at end of file
+}
diff --git a/src/deprecatedCompat/4.6/importTypeAssertions.ts b/src/deprecatedCompat/4.6/importTypeAssertions.ts
index 1bfe3ef920ed5..4fd063801221d 100644
--- a/src/deprecatedCompat/4.6/importTypeAssertions.ts
+++ b/src/deprecatedCompat/4.6/importTypeAssertions.ts
@@ -80,16 +80,8 @@ namespace ts {
 
     // Patch `createNodeFactory` because it creates the factories that are provided to transformers
     // in the public API.
-
-    const prevCreateNodeFactory = createNodeFactory;
-
-    // eslint-disable-next-line @typescript-eslint/no-unnecessary-qualifier
-    ts.createNodeFactory = (flags, baseFactory) => {
-        const factory = prevCreateNodeFactory(flags, baseFactory);
-        patchNodeFactory(factory);
-        return factory;
-    };
+    addNodeFactoryPatcher(patchNodeFactory);
 
     // Patch `ts.factory` because its public
     patchNodeFactory(factory);
-}
\ No newline at end of file
+}
diff --git a/src/deprecatedCompat/4.7/typeParameterModifiers.ts b/src/deprecatedCompat/4.7/typeParameterModifiers.ts
index b7e531a4a9238..ecd5ea448d539 100644
--- a/src/deprecatedCompat/4.7/typeParameterModifiers.ts
+++ b/src/deprecatedCompat/4.7/typeParameterModifiers.ts
@@ -65,16 +65,8 @@ namespace ts {
 
     // Patch `createNodeFactory` because it creates the factories that are provided to transformers
     // in the public API.
-
-    const prevCreateNodeFactory = createNodeFactory;
-
-    // eslint-disable-next-line @typescript-eslint/no-unnecessary-qualifier
-    ts.createNodeFactory = (flags, baseFactory) => {
-        const factory = prevCreateNodeFactory(flags, baseFactory);
-        patchNodeFactory(factory);
-        return factory;
-    };
+    addNodeFactoryPatcher(patchNodeFactory);
 
     // Patch `ts.factory` because its public
     patchNodeFactory(factory);
-}
\ No newline at end of file
+}
diff --git a/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts b/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts
index d6cdbf2969e1c..5817bb0c0be85 100644
--- a/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts
+++ b/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts
@@ -1397,15 +1397,7 @@ namespace ts {
 
     // Patch `createNodeFactory` because it creates the factories that are provided to transformers
     // in the public API.
-
-    const prevCreateNodeFactory = createNodeFactory;
-
-    // eslint-disable-next-line @typescript-eslint/no-unnecessary-qualifier
-    ts.createNodeFactory = (flags, baseFactory) => {
-        const factory = prevCreateNodeFactory(flags, baseFactory);
-        patchNodeFactory(factory);
-        return factory;
-    };
+    addNodeFactoryPatcher(patchNodeFactory);
 
     // Patch `ts.factory` because its public
     patchNodeFactory(factory);
diff --git a/src/tsserver/webServer.ts b/src/tsserver/webServer.ts
index 71beb5a8db92b..78702954328ca 100644
--- a/src/tsserver/webServer.ts
+++ b/src/tsserver/webServer.ts
@@ -1,8 +1,12 @@
 /*@internal*/
-
-/// <reference lib="webworker" />
-
 namespace ts.server {
+    declare const addEventListener: any;
+    declare const postMessage: any;
+    declare const close: any;
+    declare const location: any;
+    declare const XMLHttpRequest: any;
+    declare const self: any;
+
     const nullLogger: Logger = {
         close: noop,
         hasLevel: returnFalse,
diff --git a/src/webServer/webServer.ts b/src/webServer/webServer.ts
index c989c00557ba4..db12074aee5ce 100644
--- a/src/webServer/webServer.ts
+++ b/src/webServer/webServer.ts
@@ -1,8 +1,9 @@
 /*@internal*/
-/// <reference lib="dom" />
-/// <reference lib="webworker.importscripts" />
 
 namespace ts.server {
+    declare const fetch: any;
+    declare const importScripts: any;
+
     export interface HostWithWriteMessage {
         writeMessage(s: any): void;
     }
@@ -112,8 +113,6 @@ namespace ts.server {
         }
     }
 
-    export declare const dynamicImport: ((id: string) => Promise<any>) | undefined;
-
     // Attempt to load `dynamicImport`
     if (typeof importScripts === "function") {
         try {
@@ -132,9 +131,10 @@ namespace ts.server {
         const getWebPath = (path: string) => startsWith(path, directorySeparator) ? path.replace(directorySeparator, getExecutingDirectoryPath()) : undefined;
 
         const dynamicImport = async (id: string): Promise<any> => {
+            const serverDynamicImport: ((id: string) => Promise<any>) | undefined = (server as any).dynamicImport;
             // Use syntactic dynamic import first, if available
-            if (server.dynamicImport) {
-                return server.dynamicImport(id);
+            if (serverDynamicImport) {
+                return serverDynamicImport(id);
             }
 
             throw new Error("Dynamic import not implemented");