fix(app): preserve timeline bottom anchoring (#36160)

2026-07-14 10:03:18 +10:00
parent b5e09024d5
commit 35c88c3fc8
6 changed files with 168 additions and 185 deletions
@@ -0,0 +1,108 @@
+diff --git a/dist/cjs/index.cjs b/dist/cjs/index.cjs
+index 52ae6ca12f8d1c650ee7f1bd55573ee7d4f8b65f..830f646f5bd80f4e00f442291ad6e4c6c508630d 100644
+--- a/dist/cjs/index.cjs
+++ b/dist/cjs/index.cjs
+@@ -716,17 +716,20 @@ class Virtualizer {
+         this.getMeasurements(),
+         this.getSize(),
+         this.getScrollOffset(),
+-        this.options.lanes
+        this.options.lanes,
+        this.options.paddingEnd
+       ],
+-      (measurements, outerSize, scrollOffset, lanes) => {
+      (measurements, outerSize, scrollOffset, lanes, _paddingEnd) => {
+         if (measurements.length === 0 || outerSize === 0) {
+           this.range = null;
+           return null;
+         }
+        const maxScrollOffset = Math.max(this.options.scrollMargin + this.getTotalSize() - outerSize, 0);
+        const effectiveScrollOffset = Math.min(Math.max(scrollOffset, 0), maxScrollOffset);
+         this.range = calculateRangeImpl(
+           measurements,
+           outerSize,
+-          scrollOffset,
+          effectiveScrollOffset,
+           lanes,
+           // Pass the typed array so binary search + forward-walk can read
+           // start/end directly from Float64Array, skipping the Proxy traps.
+diff --git a/dist/cjs/index.d.cts b/dist/cjs/index.d.cts
+index c61ee17752565253f795c7fc7d57e86237ecbb52..430c622a18c69407df9f1ca82ee9440e9be287b7 100644
+--- a/dist/cjs/index.d.cts
+++ b/dist/cjs/index.d.cts
+@@ -144,7 +144,7 @@ export declare class Virtualizer<TScrollElement extends Element | Window, TItemE
+             startIndex: number;
+             endIndex: number;
+         } | null;
+-        updateDeps(newDeps: [VirtualItem[], number, number, number]): void;
+        updateDeps(newDeps: [VirtualItem[], number, number, number, number]): void;
+     };
+     getVirtualIndexes: {
+         (): number[];
+diff --git a/dist/esm/index.d.ts b/dist/esm/index.d.ts
+index b03abab604eb6578f6f56ff92c489259cfaf8f19..940310f9215ba5bf666c5b71e92dddbbbc85635d 100644
+--- a/dist/esm/index.d.ts
+++ b/dist/esm/index.d.ts
+@@ -144,7 +144,7 @@ export declare class Virtualizer<TScrollElement extends Element | Window, TItemE
+             startIndex: number;
+             endIndex: number;
+         } | null;
+-        updateDeps(newDeps: [VirtualItem[], number, number, number]): void;
+        updateDeps(newDeps: [VirtualItem[], number, number, number, number]): void;
+     };
+     getVirtualIndexes: {
+         (): number[];
+diff --git a/dist/esm/index.js b/dist/esm/index.js
+index 3032c0ca457582be3f47923cba1f7d92c848745c..6e52124048fb3bc7b7ee37e763354b33593a6285 100644
+--- a/dist/esm/index.js
+++ b/dist/esm/index.js
+@@ -714,17 +714,20 @@ class Virtualizer {
+         this.getMeasurements(),
+         this.getSize(),
+         this.getScrollOffset(),
+-        this.options.lanes
+        this.options.lanes,
+        this.options.paddingEnd
+       ],
+-      (measurements, outerSize, scrollOffset, lanes) => {
+      (measurements, outerSize, scrollOffset, lanes, _paddingEnd) => {
+         if (measurements.length === 0 || outerSize === 0) {
+           this.range = null;
+           return null;
+         }
+        const maxScrollOffset = Math.max(this.options.scrollMargin + this.getTotalSize() - outerSize, 0);
+        const effectiveScrollOffset = Math.min(Math.max(scrollOffset, 0), maxScrollOffset);
+         this.range = calculateRangeImpl(
+           measurements,
+           outerSize,
+-          scrollOffset,
+          effectiveScrollOffset,
+           lanes,
+           // Pass the typed array so binary search + forward-walk can read
+           // start/end directly from Float64Array, skipping the Proxy traps.
+diff --git a/src/index.ts b/src/index.ts
+index 7ad79aacd591c3a4f7855c91b2727a59a9579bca..201406779ee85d2f2e5b01a8ea284aa9a5f694e2 100644
+--- a/src/index.ts
+++ b/src/index.ts
+@@ -1367,16 +1367,19 @@ export class Virtualizer<
+       this.getSize(),
+       this.getScrollOffset(),
+       this.options.lanes,
+      this.options.paddingEnd,
+     ],
+-    (measurements, outerSize, scrollOffset, lanes) => {
+    (measurements, outerSize, scrollOffset, lanes, _paddingEnd) => {
+       if (measurements.length === 0 || outerSize === 0) {
+         this.range = null
+         return null
+       }
+      const maxScrollOffset = Math.max(this.options.scrollMargin + this.getTotalSize() - outerSize, 0)
+      const effectiveScrollOffset = Math.min(Math.max(scrollOffset, 0), maxScrollOffset)
+       this.range = calculateRangeImpl(
+         measurements,
+         outerSize,
+-        scrollOffset,
+        effectiveScrollOffset,
+         lanes,
+         // Pass the typed array so binary search + forward-walk can read
+         // start/end directly from Float64Array, skipping the Proxy traps.