fix(tui): apply ui-tui fix pass and restore type-check

- run the requested ui-tui lint+format pass and include resulting formatting updates
- guard text-measure cache eviction key in hermes-ink so ui-tui type-check stays green

ui-tui/packages/hermes-ink/src/ink/components/AlternateScreen.tsx

@@ -53,7 +53,11 @@ export function AlternateScreen(t0: Props) {
       }
 
       writeRaw(
-        ENTER_ALT_SCREEN + ERASE_SCROLLBACK + ERASE_SCREEN + CURSOR_HOME + (mouseTracking ? ENABLE_MOUSE_TRACKING : DISABLE_MOUSE_TRACKING)
+        ENTER_ALT_SCREEN +
+          ERASE_SCROLLBACK +
+          ERASE_SCREEN +
+          CURSOR_HOME +
+          (mouseTracking ? ENABLE_MOUSE_TRACKING : DISABLE_MOUSE_TRACKING)
       )
       ink?.setAltScreenActive(true, mouseTracking)
 

ui-tui/packages/hermes-ink/src/ink/dom.ts

@@ -323,27 +323,38 @@ const measureTextNode = function (
   widthMode: LayoutMeasureMode
 ): { width: number; height: number } {
   const elem = node.nodeName !== '#text' ? (node as DOMElement) : node.parentNode
+
   if (elem && elem.nodeName === 'ink-text') {
     let cache = elem._textMeasureCache
+
     if (!cache) {
       cache = { gen: 0, entries: new Map() }
       elem._textMeasureCache = cache
     }
+
     const key = `${width}|${widthMode}`
     const hit = cache.entries.get(key)
+
     if (hit && hit._gen === cache.gen) {
       return hit.result
     }
+
     const result = computeTextMeasure(node, width, widthMode)
+
     // Enforce cap with FIFO eviction to avoid unbounded growth during
     // pathological frames where yoga probes many widths.
     if (cache.entries.size >= MEASURE_CACHE_CAP) {
       const firstKey = cache.entries.keys().next().value
-      cache.entries.delete(firstKey)
+      if (firstKey !== undefined) {
+        cache.entries.delete(firstKey)
+      }
     }
+
     cache.entries.set(key, { _gen: cache.gen, result })
+
     return result
   }
+
   return computeTextMeasure(node, width, widthMode)
 }
 
@@ -475,6 +486,7 @@ export const clearYogaNodeReferences = (node: DOMElement | TextNode): void => {
     for (const child of node.childNodes) {
       clearYogaNodeReferences(child)
     }
+
     node._textMeasureCache = undefined
   }
 

ui-tui/packages/hermes-ink/src/ink/termio/osc.test.ts

@@ -9,18 +9,21 @@ describe('shouldEmitClipboardSequence', () => {
   })
 
   it('keeps OSC enabled for remote or plain local terminals', () => {
-    expect(shouldEmitClipboardSequence({ SSH_CONNECTION: '1', TMUX: '/tmp/tmux-1/default,1,0' } as NodeJS.ProcessEnv)).toBe(
-      true
-    )
+    expect(
+      shouldEmitClipboardSequence({ SSH_CONNECTION: '1', TMUX: '/tmp/tmux-1/default,1,0' } as NodeJS.ProcessEnv)
+    ).toBe(true)
     expect(shouldEmitClipboardSequence({ TERM: 'xterm-256color' } as NodeJS.ProcessEnv)).toBe(true)
   })
 
   it('honors explicit env override', () => {
-    expect(shouldEmitClipboardSequence({ HERMES_TUI_CLIPBOARD_OSC52: '1', TMUX: '/tmp/tmux-1/default,1,0' } as NodeJS.ProcessEnv)).toBe(
-      true
-    )
-    expect(shouldEmitClipboardSequence({ HERMES_TUI_COPY_OSC52: '0', TERM: 'xterm-256color' } as NodeJS.ProcessEnv)).toBe(
-      false
-    )
+    expect(
+      shouldEmitClipboardSequence({
+        HERMES_TUI_CLIPBOARD_OSC52: '1',
+        TMUX: '/tmp/tmux-1/default,1,0'
+      } as NodeJS.ProcessEnv)
+    ).toBe(true)
+    expect(
+      shouldEmitClipboardSequence({ HERMES_TUI_COPY_OSC52: '0', TERM: 'xterm-256color' } as NodeJS.ProcessEnv)
+    ).toBe(false)
   })
 })