From 2a8102b3ee7156eeb6f672301fa14ca6cbfff06d Mon Sep 17 00:00:00 2001
From: Joshua J <31038284+joshuajaco@users.noreply.github.com>
Date: Tue, 28 Jan 2025 13:35:31 +0100
Subject: [PATCH 1/2] docs: Fix `header.getStart` API docs link

---
 packages/table-core/src/features/ColumnSizing.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/table-core/src/features/ColumnSizing.ts b/packages/table-core/src/features/ColumnSizing.ts
index 3cce2ddcb2..2105e7a6b2 100644
--- a/packages/table-core/src/features/ColumnSizing.ts
+++ b/packages/table-core/src/features/ColumnSizing.ts
@@ -208,7 +208,7 @@ export interface ColumnSizingHeader {
   getSize: () => number
   /**
    * Returns the offset measurement along the row-axis (usually the x-axis for standard tables) for the header. This is effectively a sum of the offset measurements of all preceding headers.
-   * @link [API Docs](https://tanstack.com/table/v8/docs/api/features/column-sizing#getstart)
+   * @link [API Docs](https://tanstack.com/table/v8/docs/api/features/column-sizing#getstart-1)
    * @link [Guide](https://tanstack.com/table/v8/docs/guide/column-sizing)
    */
   getStart: (position?: ColumnPinningPosition) => number

From 0983345c366ff087a224521cef296312d6b55db7 Mon Sep 17 00:00:00 2001
From: Joshua J <31038284+joshuajaco@users.noreply.github.com>
Date: Tue, 28 Jan 2025 13:36:30 +0100
Subject: [PATCH 2/2] feat(table-core): add `header.getAfter` API

---
 docs/api/features/column-sizing.md               |  8 ++++++++
 packages/table-core/src/features/ColumnSizing.ts | 15 +++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/docs/api/features/column-sizing.md b/docs/api/features/column-sizing.md
index 0bf7631be8..0b5aac7213 100644
--- a/docs/api/features/column-sizing.md
+++ b/docs/api/features/column-sizing.md
@@ -131,6 +131,14 @@ getStart: (position?: ColumnPinningPosition) => number
 
 Returns the offset measurement along the row-axis (usually the x-axis for standard tables) for the header. This is effectively a sum of the offset measurements of all preceding headers.
 
+### `getAfter`
+
+```tsx
+getAfter: (position?: ColumnPinningPosition) => number
+```
+
+Returns the offset measurement along the row-axis (usually the x-axis for standard tables) for the header. This is effectively a sum of the offset measurements of all succeeding headers.
+
 ### `getResizeHandler`
 
 ```tsx
diff --git a/packages/table-core/src/features/ColumnSizing.ts b/packages/table-core/src/features/ColumnSizing.ts
index 2105e7a6b2..ee685d057f 100644
--- a/packages/table-core/src/features/ColumnSizing.ts
+++ b/packages/table-core/src/features/ColumnSizing.ts
@@ -212,6 +212,12 @@ export interface ColumnSizingHeader {
    * @link [Guide](https://tanstack.com/table/v8/docs/guide/column-sizing)
    */
   getStart: (position?: ColumnPinningPosition) => number
+  /**
+   * Returns the offset measurement along the row-axis (usually the x-axis for standard tables) for the header. This is effectively a sum of the offset measurements of all preceding headers.
+   * @link [API Docs](https://tanstack.com/table/v8/docs/api/features/column-sizing#getafter-1)
+   * @link [Guide](https://tanstack.com/table/v8/docs/guide/column-sizing)
+   */
+  getAfter: (position?: ColumnPinningPosition) => number
 }
 
 //
@@ -339,6 +345,15 @@ export const ColumnSizing: TableFeature = {
 
       return 0
     }
+    header.getAfter = () => {
+      const rightIndex = header.headerGroup.headers.length - header.index - 1
+      if (rightIndex > 0) {
+        const nextSiblingHeader = header.headerGroup.headers[header.index + 1]!
+        return nextSiblingHeader.getAfter() + nextSiblingHeader.getSize()
+      }
+
+      return 0
+    }
     header.getResizeHandler = _contextDocument => {
       const column = table.getColumn(header.column.id)
       const canResize = column?.getCanResize()