From b3bf1a1c5d545922f167f7e219eb89dbfa759afd Mon Sep 17 00:00:00 2001
From: Felipe <felipe@jjw.com.br>
Date: Fri, 23 Oct 2026 17:13:52 -0300
Subject: [PATCH] Specify void this for TimerHandler callbacks

---
 baselines/dom.generated.d.ts                 | 2 +-
 baselines/serviceworker.generated.d.ts       | 2 +-
 baselines/sharedworker.generated.d.ts        | 2 +-
 baselines/ts5.5/dom.generated.d.ts           | 2 +-
 baselines/ts5.5/serviceworker.generated.d.ts | 2 +-
 baselines/ts5.5/sharedworker.generated.d.ts  | 2 +-
 baselines/ts5.5/webworker.generated.d.ts     | 2 +-
 baselines/ts5.6/dom.generated.d.ts           | 2 +-
 baselines/ts5.6/serviceworker.generated.d.ts | 2 +-
 baselines/ts5.6/sharedworker.generated.d.ts  | 2 +-
 baselines/ts5.6/webworker.generated.d.ts     | 2 +-
 baselines/ts5.9/dom.generated.d.ts           | 2 +-
 baselines/ts5.9/serviceworker.generated.d.ts | 2 +-
 baselines/ts5.9/sharedworker.generated.d.ts  | 2 +-
 baselines/ts5.9/webworker.generated.d.ts     | 2 +-
 baselines/webworker.generated.d.ts           | 2 +-
 inputfiles/patches/html.kdl                  | 1 +
 17 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 2140495e2..3a1392cc1 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -45125,7 +45125,7 @@ type SanitizerElementWithAttributes = string | SanitizerElementNamespaceWithAttr
 type SanitizerPI = string | SanitizerProcessingInstruction;
 type SelectionDirection = "forward" | "backward" | "none";
 type TexImageSource = ImageBitmap | ImageData | HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/serviceworker.generated.d.ts b/baselines/serviceworker.generated.d.ts
index 190881a28..576b690c8 100644
--- a/baselines/serviceworker.generated.d.ts
+++ b/baselines/serviceworker.generated.d.ts
@@ -13617,7 +13617,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/sharedworker.generated.d.ts b/baselines/sharedworker.generated.d.ts
index 602f794ec..7ee38c64c 100644
--- a/baselines/sharedworker.generated.d.ts
+++ b/baselines/sharedworker.generated.d.ts
@@ -13305,7 +13305,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/ts5.5/dom.generated.d.ts b/baselines/ts5.5/dom.generated.d.ts
index 45ec977fd..b1162cf40 100644
--- a/baselines/ts5.5/dom.generated.d.ts
+++ b/baselines/ts5.5/dom.generated.d.ts
@@ -45099,7 +45099,7 @@ type SanitizerElementWithAttributes = string | SanitizerElementNamespaceWithAttr
 type SanitizerPI = string | SanitizerProcessingInstruction;
 type SelectionDirection = "forward" | "backward" | "none";
 type TexImageSource = ImageBitmap | ImageData | HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.5/serviceworker.generated.d.ts b/baselines/ts5.5/serviceworker.generated.d.ts
index afc9c9702..816ffd27c 100644
--- a/baselines/ts5.5/serviceworker.generated.d.ts
+++ b/baselines/ts5.5/serviceworker.generated.d.ts
@@ -13614,7 +13614,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.5/sharedworker.generated.d.ts b/baselines/ts5.5/sharedworker.generated.d.ts
index 272a4fc47..0b96930b7 100644
--- a/baselines/ts5.5/sharedworker.generated.d.ts
+++ b/baselines/ts5.5/sharedworker.generated.d.ts
@@ -13302,7 +13302,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.5/webworker.generated.d.ts b/baselines/ts5.5/webworker.generated.d.ts
index e74ca3fe4..c944ada82 100644
--- a/baselines/ts5.5/webworker.generated.d.ts
+++ b/baselines/ts5.5/webworker.generated.d.ts
@@ -15429,7 +15429,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.6/dom.generated.d.ts b/baselines/ts5.6/dom.generated.d.ts
index aca3db87f..c8b3a0c7c 100644
--- a/baselines/ts5.6/dom.generated.d.ts
+++ b/baselines/ts5.6/dom.generated.d.ts
@@ -45122,7 +45122,7 @@ type SanitizerElementWithAttributes = string | SanitizerElementNamespaceWithAttr
 type SanitizerPI = string | SanitizerProcessingInstruction;
 type SelectionDirection = "forward" | "backward" | "none";
 type TexImageSource = ImageBitmap | ImageData | HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.6/serviceworker.generated.d.ts b/baselines/ts5.6/serviceworker.generated.d.ts
index afc9c9702..816ffd27c 100644
--- a/baselines/ts5.6/serviceworker.generated.d.ts
+++ b/baselines/ts5.6/serviceworker.generated.d.ts
@@ -13614,7 +13614,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.6/sharedworker.generated.d.ts b/baselines/ts5.6/sharedworker.generated.d.ts
index 272a4fc47..0b96930b7 100644
--- a/baselines/ts5.6/sharedworker.generated.d.ts
+++ b/baselines/ts5.6/sharedworker.generated.d.ts
@@ -13302,7 +13302,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.6/webworker.generated.d.ts b/baselines/ts5.6/webworker.generated.d.ts
index e74ca3fe4..c944ada82 100644
--- a/baselines/ts5.6/webworker.generated.d.ts
+++ b/baselines/ts5.6/webworker.generated.d.ts
@@ -15429,7 +15429,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array | GLuint[];
diff --git a/baselines/ts5.9/dom.generated.d.ts b/baselines/ts5.9/dom.generated.d.ts
index b0dba0280..ccba31c2b 100644
--- a/baselines/ts5.9/dom.generated.d.ts
+++ b/baselines/ts5.9/dom.generated.d.ts
@@ -45122,7 +45122,7 @@ type SanitizerElementWithAttributes = string | SanitizerElementNamespaceWithAttr
 type SanitizerPI = string | SanitizerProcessingInstruction;
 type SelectionDirection = "forward" | "backward" | "none";
 type TexImageSource = ImageBitmap | ImageData | HTMLImageElement | HTMLCanvasElement | HTMLVideoElement | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/ts5.9/serviceworker.generated.d.ts b/baselines/ts5.9/serviceworker.generated.d.ts
index 377ca282f..3005b4982 100644
--- a/baselines/ts5.9/serviceworker.generated.d.ts
+++ b/baselines/ts5.9/serviceworker.generated.d.ts
@@ -13614,7 +13614,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/ts5.9/sharedworker.generated.d.ts b/baselines/ts5.9/sharedworker.generated.d.ts
index ef5f13c4b..d6112e7cb 100644
--- a/baselines/ts5.9/sharedworker.generated.d.ts
+++ b/baselines/ts5.9/sharedworker.generated.d.ts
@@ -13302,7 +13302,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | ReadableStream | WritableStream | TransformStream | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/ts5.9/webworker.generated.d.ts b/baselines/ts5.9/webworker.generated.d.ts
index 69f511463..3573d03f4 100644
--- a/baselines/ts5.9/webworker.generated.d.ts
+++ b/baselines/ts5.9/webworker.generated.d.ts
@@ -15429,7 +15429,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index 45364e7b8..1bf7867c9 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -15432,7 +15432,7 @@ type ReadableStreamReader<T> = ReadableStreamDefaultReader<T> | ReadableStreamBY
 type ReportList = Report[];
 type RequestInfo = Request | string;
 type TexImageSource = ImageBitmap | ImageData | OffscreenCanvas | VideoFrame;
-type TimerHandler = string | Function;
+type TimerHandler = string | ((this: void, ...arguments: any[]) => void);
 type Transferable = OffscreenCanvas | ImageBitmap | MessagePort | MediaSourceHandle | ReadableStream | WritableStream | TransformStream | AudioData | VideoFrame | RTCDataChannel | ArrayBuffer;
 type URLPatternInput = string | URLPatternInit;
 type Uint32List = Uint32Array<ArrayBufferLike> | GLuint[];
diff --git a/inputfiles/patches/html.kdl b/inputfiles/patches/html.kdl
index 99670f184..ea539e626 100644
--- a/inputfiles/patches/html.kdl
+++ b/inputfiles/patches/html.kdl
@@ -123,6 +123,7 @@ interface HTMLTextAreaElement {
 }
 
 typedef SelectionDirection overrideType=#""forward" | "backward" | "none""#
+typedef TimerHandler overrideType="string | ((this: void, ...arguments: any[]) => void)"
 
 dictionary StructuredSerializeOptions {
   member transfer {