diff --git a/baselines/audioworklet.generated.d.ts b/baselines/audioworklet.generated.d.ts
index 2ca18a7de..34f3a4745 100644
--- a/baselines/audioworklet.generated.d.ts
+++ b/baselines/audioworklet.generated.d.ts
@@ -959,7 +959,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 0c52f7db0..fb39573e3 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -8785,7 +8785,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -26305,7 +26305,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -36822,7 +36822,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/serviceworker.generated.d.ts b/baselines/serviceworker.generated.d.ts
index b96768a75..b51f530ae 100644
--- a/baselines/serviceworker.generated.d.ts
+++ b/baselines/serviceworker.generated.d.ts
@@ -2324,7 +2324,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6492,7 +6492,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10498,7 +10498,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/sharedworker.generated.d.ts b/baselines/sharedworker.generated.d.ts
index 9ab81e107..152d7a1ca 100644
--- a/baselines/sharedworker.generated.d.ts
+++ b/baselines/sharedworker.generated.d.ts
@@ -2105,7 +2105,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6069,7 +6069,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10035,7 +10035,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.5/audioworklet.generated.d.ts b/baselines/ts5.5/audioworklet.generated.d.ts
index df898fb1a..6dd7a35f1 100644
--- a/baselines/ts5.5/audioworklet.generated.d.ts
+++ b/baselines/ts5.5/audioworklet.generated.d.ts
@@ -956,7 +956,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
diff --git a/baselines/ts5.5/dom.generated.d.ts b/baselines/ts5.5/dom.generated.d.ts
index d66c3f83b..dd0bd9321 100644
--- a/baselines/ts5.5/dom.generated.d.ts
+++ b/baselines/ts5.5/dom.generated.d.ts
@@ -8774,7 +8774,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -26281,7 +26281,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -36796,7 +36796,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.5/serviceworker.generated.d.ts b/baselines/ts5.5/serviceworker.generated.d.ts
index cc873ffd0..ea14f1acf 100644
--- a/baselines/ts5.5/serviceworker.generated.d.ts
+++ b/baselines/ts5.5/serviceworker.generated.d.ts
@@ -2321,7 +2321,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6489,7 +6489,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10495,7 +10495,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.5/sharedworker.generated.d.ts b/baselines/ts5.5/sharedworker.generated.d.ts
index 19f9266b0..0b0c55c85 100644
--- a/baselines/ts5.5/sharedworker.generated.d.ts
+++ b/baselines/ts5.5/sharedworker.generated.d.ts
@@ -2102,7 +2102,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6066,7 +6066,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10032,7 +10032,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.5/webworker.generated.d.ts b/baselines/ts5.5/webworker.generated.d.ts
index 90e3837bf..a92789a20 100644
--- a/baselines/ts5.5/webworker.generated.d.ts
+++ b/baselines/ts5.5/webworker.generated.d.ts
@@ -2789,7 +2789,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -7591,7 +7591,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -11929,7 +11929,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.6/audioworklet.generated.d.ts b/baselines/ts5.6/audioworklet.generated.d.ts
index df898fb1a..6dd7a35f1 100644
--- a/baselines/ts5.6/audioworklet.generated.d.ts
+++ b/baselines/ts5.6/audioworklet.generated.d.ts
@@ -956,7 +956,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
diff --git a/baselines/ts5.6/dom.generated.d.ts b/baselines/ts5.6/dom.generated.d.ts
index c69bd7a74..8189d4e4f 100644
--- a/baselines/ts5.6/dom.generated.d.ts
+++ b/baselines/ts5.6/dom.generated.d.ts
@@ -8782,7 +8782,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -26302,7 +26302,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -36819,7 +36819,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.6/serviceworker.generated.d.ts b/baselines/ts5.6/serviceworker.generated.d.ts
index cc873ffd0..ea14f1acf 100644
--- a/baselines/ts5.6/serviceworker.generated.d.ts
+++ b/baselines/ts5.6/serviceworker.generated.d.ts
@@ -2321,7 +2321,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6489,7 +6489,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10495,7 +10495,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.6/sharedworker.generated.d.ts b/baselines/ts5.6/sharedworker.generated.d.ts
index 19f9266b0..0b0c55c85 100644
--- a/baselines/ts5.6/sharedworker.generated.d.ts
+++ b/baselines/ts5.6/sharedworker.generated.d.ts
@@ -2102,7 +2102,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6066,7 +6066,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10032,7 +10032,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.6/webworker.generated.d.ts b/baselines/ts5.6/webworker.generated.d.ts
index 90e3837bf..a92789a20 100644
--- a/baselines/ts5.6/webworker.generated.d.ts
+++ b/baselines/ts5.6/webworker.generated.d.ts
@@ -2789,7 +2789,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -7591,7 +7591,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -11929,7 +11929,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.9/audioworklet.generated.d.ts b/baselines/ts5.9/audioworklet.generated.d.ts
index bb8384b80..ed6ff6b7c 100644
--- a/baselines/ts5.9/audioworklet.generated.d.ts
+++ b/baselines/ts5.9/audioworklet.generated.d.ts
@@ -956,7 +956,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
diff --git a/baselines/ts5.9/dom.generated.d.ts b/baselines/ts5.9/dom.generated.d.ts
index 19e6ed143..7a41829e9 100644
--- a/baselines/ts5.9/dom.generated.d.ts
+++ b/baselines/ts5.9/dom.generated.d.ts
@@ -8782,7 +8782,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -26302,7 +26302,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -36819,7 +36819,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.9/serviceworker.generated.d.ts b/baselines/ts5.9/serviceworker.generated.d.ts
index d59839edb..3e605682f 100644
--- a/baselines/ts5.9/serviceworker.generated.d.ts
+++ b/baselines/ts5.9/serviceworker.generated.d.ts
@@ -2321,7 +2321,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6489,7 +6489,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10495,7 +10495,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.9/sharedworker.generated.d.ts b/baselines/ts5.9/sharedworker.generated.d.ts
index 335c1a1eb..d5b819e06 100644
--- a/baselines/ts5.9/sharedworker.generated.d.ts
+++ b/baselines/ts5.9/sharedworker.generated.d.ts
@@ -2102,7 +2102,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -6066,7 +6066,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -10032,7 +10032,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/ts5.9/webworker.generated.d.ts b/baselines/ts5.9/webworker.generated.d.ts
index c57d26774..2e748e849 100644
--- a/baselines/ts5.9/webworker.generated.d.ts
+++ b/baselines/ts5.9/webworker.generated.d.ts
@@ -2789,7 +2789,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -7591,7 +7591,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -11929,7 +11929,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index 9a907905f..cbc334e44 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -2792,7 +2792,7 @@ interface Crypto {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/getRandomValues)
      */
-    getRandomValues<T extends ArrayBufferView>(array: T): T;
+    getRandomValues<T extends Exclude<BufferSource, ArrayBuffer>>(array: T): T;
     /**
      * The **`randomUUID()`** method of the Crypto interface is used to generate a v4 UUID using a cryptographically secure random number generator.
      * Available only in secure contexts.
@@ -7594,7 +7594,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
      */
-    read<T extends ArrayBufferView>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(view: T, options?: ReadableStreamBYOBReaderReadOptions): Promise<ReadableStreamReadResult<T>>;
     /**
      * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
      *
@@ -11932,7 +11932,7 @@ interface WebSocket extends EventTarget {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebSocket/send)
      */
-    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
+    send(data: BufferSource | Blob | string): void;
     readonly CONNECTING: 0;
     readonly OPEN: 1;
     readonly CLOSING: 2;
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index 98eabeb5d..5deed68ef 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -1870,16 +1870,6 @@
                 }
             },
             "WebSocket": {
-                "methods": {
-                    "method": {
-                        "send": {
-                            "name": "send",
-                            "overrideSignatures": [
-                                "send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void"
-                            ]
-                        }
-                    }
-                },
                 "events": {
                     "event": [
                         {
@@ -2384,7 +2374,9 @@
                                     "typeParameters": [
                                         {
                                             "name": "T",
-                                            "extends": "ArrayBufferView"
+                                            // Should be "ArrayBufferView<ArrayBuffer>"
+                                            // (resolved indirectly for compatibility with TS <=5.6)
+                                            "extends": "Exclude<BufferSource, ArrayBuffer>"
                                         }
                                     ],
                                     "param": [
@@ -2719,7 +2711,9 @@
                                     "typeParameters": [
                                         {
                                             "name": "T",
-                                            "extends": "ArrayBufferView"
+                                            // Should be "ArrayBufferView<ArrayBuffer>"
+                                            // (resolved indirectly for compatibility with TS <=5.6)
+                                            "extends": "Exclude<BufferSource, ArrayBuffer>"
                                         }
                                     ],
                                     "param": [