diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 7799dbe30..454bab78d 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -19852,7 +19852,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/selectionDirection)
      */
-    selectionDirection: "forward" | "backward" | "none";
+    selectionDirection: SelectionDirection;
     /**
      * The **`selectionEnd`** property of the HTMLTextAreaElement interface specifies the end position of the current text selection in a <textarea> element. It is a number representing the last index of the selected text. It can be used to both retrieve and set the index of the end of a <textarea>s selected text.
      *
@@ -19943,7 +19943,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/setSelectionRange)
      */
-    setSelectionRange(start: number | null, end: number | null, direction?: "forward" | "backward" | "none"): void;
+    setSelectionRange(start: number | null, end: number | null, direction?: SelectionDirection): void;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/baselines/ts5.5/dom.generated.d.ts b/baselines/ts5.5/dom.generated.d.ts
index 76b401d73..02f6f12e4 100644
--- a/baselines/ts5.5/dom.generated.d.ts
+++ b/baselines/ts5.5/dom.generated.d.ts
@@ -19828,7 +19828,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/selectionDirection)
      */
-    selectionDirection: "forward" | "backward" | "none";
+    selectionDirection: SelectionDirection;
     /**
      * The **`selectionEnd`** property of the HTMLTextAreaElement interface specifies the end position of the current text selection in a <textarea> element. It is a number representing the last index of the selected text. It can be used to both retrieve and set the index of the end of a <textarea>s selected text.
      *
@@ -19919,7 +19919,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/setSelectionRange)
      */
-    setSelectionRange(start: number | null, end: number | null, direction?: "forward" | "backward" | "none"): void;
+    setSelectionRange(start: number | null, end: number | null, direction?: SelectionDirection): void;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/baselines/ts5.6/dom.generated.d.ts b/baselines/ts5.6/dom.generated.d.ts
index 078e5f409..710409c3e 100644
--- a/baselines/ts5.6/dom.generated.d.ts
+++ b/baselines/ts5.6/dom.generated.d.ts
@@ -19849,7 +19849,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/selectionDirection)
      */
-    selectionDirection: "forward" | "backward" | "none";
+    selectionDirection: SelectionDirection;
     /**
      * The **`selectionEnd`** property of the HTMLTextAreaElement interface specifies the end position of the current text selection in a <textarea> element. It is a number representing the last index of the selected text. It can be used to both retrieve and set the index of the end of a <textarea>s selected text.
      *
@@ -19940,7 +19940,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/setSelectionRange)
      */
-    setSelectionRange(start: number | null, end: number | null, direction?: "forward" | "backward" | "none"): void;
+    setSelectionRange(start: number | null, end: number | null, direction?: SelectionDirection): void;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/baselines/ts5.9/dom.generated.d.ts b/baselines/ts5.9/dom.generated.d.ts
index f42990cab..f413fb643 100644
--- a/baselines/ts5.9/dom.generated.d.ts
+++ b/baselines/ts5.9/dom.generated.d.ts
@@ -19849,7 +19849,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/selectionDirection)
      */
-    selectionDirection: "forward" | "backward" | "none";
+    selectionDirection: SelectionDirection;
     /**
      * The **`selectionEnd`** property of the HTMLTextAreaElement interface specifies the end position of the current text selection in a <textarea> element. It is a number representing the last index of the selected text. It can be used to both retrieve and set the index of the end of a <textarea>s selected text.
      *
@@ -19940,7 +19940,7 @@ interface HTMLTextAreaElement extends HTMLElement {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLTextAreaElement/setSelectionRange)
      */
-    setSelectionRange(start: number | null, end: number | null, direction?: "forward" | "backward" | "none"): void;
+    setSelectionRange(start: number | null, end: number | null, direction?: SelectionDirection): void;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index 3f2149ffa..dd41b4db9 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -1441,48 +1441,6 @@
                     }
                 }
             },
-            "HTMLTextAreaElement": {
-                "properties": {
-                    "property": {
-                        "autocomplete": {
-                            "name": "autocomplete",
-                            "overrideType": "AutoFill"
-                        },
-                        "labels": {
-                            "name": "labels",
-                            "overrideType": "NodeListOf<HTMLLabelElement>"
-                        },
-                        "selectionDirection": {
-                            "name": "selectionDirection",
-                            "overrideType": "\"forward\" | \"backward\" | \"none\""
-                        }
-                    }
-                },
-                "methods": {
-                    "method": {
-                        "setSelectionRange": {
-                            "signature": {
-                                "0": {
-                                    "param": [
-                                        {
-                                            "name": "start",
-                                            "nullable": true
-                                        },
-                                        {
-                                            "name": "end",
-                                            "nullable": true
-                                        },
-                                        {
-                                            "name": "direction",
-                                            "overrideType": "\"forward\" | \"backward\" | \"none\""
-                                        }
-                                    ]
-                                }
-                            }
-                        }
-                    }
-                }
-            },
             "ServiceWorkerContainer": {
                 "methods": {
                     "method": {
diff --git a/inputfiles/patches/html.kdl b/inputfiles/patches/html.kdl
index 92015674c..dd2e5676d 100644
--- a/inputfiles/patches/html.kdl
+++ b/inputfiles/patches/html.kdl
@@ -93,6 +93,26 @@ interface HTMLInputElement {
   }
 }
 
+interface HTMLTextAreaElement {
+  property autocomplete type=AutoFill
+  property labels {
+    type NodeListOf {
+      type HTMLLabelElement
+    }
+  }
+  property selectionDirection type=SelectionDirection
+  method setSelectionRange signatureIndex=0 {
+    // Same as in HTMLInputElement
+    param start {
+      type nullable=#true
+    }
+    param end {
+      type nullable=#true
+    }
+    param direction type=SelectionDirection
+  }
+}
+
 typedef SelectionDirection overrideType=#""forward" | "backward" | "none""#
 
 dictionary StructuredSerializeOptions {