diff --git a/TS.fsx b/TS.fsx
index ebb327fd1..68099763a 100644
--- a/TS.fsx
+++ b/TS.fsx
@@ -693,25 +693,21 @@ module Emit =
 
     /// Get typescript type using object dom type, object name, and it's associated interface name
     let rec DomTypeToTsType (objDomType: string) =
-        match objDomType.Trim('?') with
+        match objDomType with
         | "AbortMode" -> "String"
-        | "any" -> "any"
         | "bool" | "boolean" | "Boolean" -> "boolean"
         | "CanvasPixelArray" -> "number[]"
-        | "Date" -> "Date"
         | "DOMHighResTimeStamp" -> "number"
         | "DOMString" -> "string"
         | "DOMTimeStamp" -> "number"
         | "EndOfStreamError" -> "number"
         | "EventListener" -> "EventListenerOrEventListenerObject"
         | "double" | "float" -> "number"
-        | "Function" -> "Function"
         | "object" -> "any"
-        | "Promise" -> "Promise"
         | "ReadyState" -> "string"
         | "sequence" -> "Array"
         | "UnrestrictedDouble" | "unrestricted double" -> "number"
-        | "void" -> "void"
+        | "any" | "BufferSource" | "Date" | "Function" | "Promise" | "void" -> objDomType
         | integerType when List.contains integerType integerTypes -> "number"
         | extendedType when List.contains extendedType extendedTypes -> extendedType
         | _ ->
diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 65976d2c5..fcd5a82e9 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -761,7 +761,7 @@ interface ProgressEventInit extends EventInit {
 }
 
 interface PushSubscriptionOptionsInit {
-    applicationServerKey?: any;
+    applicationServerKey?: BufferSource | null;
     userVisibleOnly?: boolean;
 }
 
@@ -771,7 +771,7 @@ interface RegistrationOptions {
 
 interface RequestInit {
     signal?: AbortSignal;
-    body?: any;
+    body?: Blob | BufferSource | FormData | string | null;
     cache?: RequestCache;
     credentials?: RequestCredentials;
     headers?: HeadersInit;
@@ -1089,7 +1089,7 @@ interface RTCTransportStats extends RTCStats {
 }
 
 interface ScopedCredentialDescriptor {
-    id: any;
+    id: BufferSource;
     transports?: Transport[];
     type: ScopedCredentialType;
 }
@@ -7543,7 +7543,7 @@ declare var MediaKeyMessageEvent: {
 
 interface MediaKeys {
     createSession(sessionType?: MediaKeySessionType): MediaKeySession;
-    setServerCertificate(serverCertificate: any): Promise<void>;
+    setServerCertificate(serverCertificate: BufferSource): Promise<void>;
 }
 
 declare var MediaKeys: {
@@ -7557,10 +7557,10 @@ interface MediaKeySession extends EventTarget {
     readonly keyStatuses: MediaKeyStatusMap;
     readonly sessionId: string;
     close(): Promise<void>;
-    generateRequest(initDataType: string, initData: any): Promise<void>;
+    generateRequest(initDataType: string, initData: BufferSource): Promise<void>;
     load(sessionId: string): Promise<boolean>;
     remove(): Promise<void>;
-    update(response: any): Promise<void>;
+    update(response: BufferSource): Promise<void>;
 }
 
 declare var MediaKeySession: {
@@ -7571,8 +7571,8 @@ declare var MediaKeySession: {
 interface MediaKeyStatusMap {
     readonly size: number;
     forEach(callback: ForEachCallback): void;
-    get(keyId: any): MediaKeyStatus;
-    has(keyId: any): boolean;
+    get(keyId: BufferSource): MediaKeyStatus;
+    has(keyId: BufferSource): boolean;
 }
 
 declare var MediaKeyStatusMap: {
@@ -12311,8 +12311,8 @@ declare var WaveShaperNode: {
 };
 
 interface WebAuthentication {
-    getAssertion(assertionChallenge: any, options?: AssertionOptions): Promise<WebAuthnAssertion>;
-    makeCredential(accountInformation: Account, cryptoParameters: ScopedCredentialParameters[], attestationChallenge: any, options?: ScopedCredentialOptions): Promise<ScopedCredentialInfo>;
+    getAssertion(assertionChallenge: BufferSource, options?: AssertionOptions): Promise<WebAuthnAssertion>;
+    makeCredential(accountInformation: Account, cryptoParameters: ScopedCredentialParameters[], attestationChallenge: BufferSource, options?: ScopedCredentialOptions): Promise<ScopedCredentialInfo>;
 }
 
 declare var WebAuthentication: {
@@ -14816,7 +14816,7 @@ interface ErrorEventHandler {
     (message: string, filename?: string, lineno?: number, colno?: number, error?: Error): void;
 }
 interface ForEachCallback {
-    (keyId: any, status: MediaKeyStatus): void;
+    (keyId: BufferSource, status: MediaKeyStatus): void;
 }
 interface FrameRequestCallback {
     (time: number): void;
@@ -15272,7 +15272,7 @@ declare function removeEventListener<K extends keyof WindowEventMap>(type: K, li
 declare function removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
 type AAGUID = string;
 type AlgorithmIdentifier = string | Algorithm;
-type BodyInit = any;
+type BodyInit = Blob | BufferSource | FormData | string;
 type ByteString = string;
 type ConstrainBoolean = boolean | ConstrainBooleanParameters;
 type ConstrainDOMString = string | string[] | ConstrainDOMStringParameters;
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index eabfd70b0..cb42e78fd 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -66,13 +66,13 @@ interface ObjectURLOptions {
 }
 
 interface PushSubscriptionOptionsInit {
-    applicationServerKey?: any;
+    applicationServerKey?: BufferSource | null;
     userVisibleOnly?: boolean;
 }
 
 interface RequestInit {
     signal?: AbortSignal;
-    body?: any;
+    body?: Blob | BufferSource | FormData | string | null;
     cache?: RequestCache;
     credentials?: RequestCredentials;
     headers?: HeadersInit;
@@ -120,7 +120,7 @@ interface NotificationEventInit extends ExtendableEventInit {
 }
 
 interface PushEventInit extends ExtendableEventInit {
-    data?: any;
+    data?: BufferSource | USVString;
 }
 
 interface SyncEventInit extends ExtendableEventInit {
@@ -1851,7 +1851,7 @@ interface ErrorEventHandler {
     (message: string, filename?: string, lineno?: number, colno?: number, error?: Error): void;
 }
 interface ForEachCallback {
-    (keyId: any, status: MediaKeyStatus): void;
+    (keyId: BufferSource, status: MediaKeyStatus): void;
 }
 interface FunctionStringCallback {
     (data: string): void;
@@ -1901,7 +1901,7 @@ declare function addEventListener(type: string, listener: EventListenerOrEventLi
 declare function removeEventListener<K extends keyof DedicatedWorkerGlobalScopeEventMap>(type: K, listener: (this: DedicatedWorkerGlobalScope, ev: DedicatedWorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
 declare function removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
 type AlgorithmIdentifier = string | Algorithm;
-type BodyInit = any;
+type BodyInit = Blob | BufferSource | FormData | string;
 type IDBKeyPath = string;
 type RequestInfo = Request | string;
 type USVString = string;