fix: repair cross-package bugs so all tests and typecheck pass

apps/web/src/lib/api.ts

@@ -8,7 +8,7 @@
  */
 
 // BUG: useThrottle no longer exists — was renamed to useDebounce
-import { useThrottle } from "@e2e/utils"
+import { useDebounce } from "@e2e/utils"
 import { formatDate, formatAUD } from "@e2e/utils"
 
 export const BASE_URL = process.env.API_URL ?? "http://localhost:3000"
@@ -29,4 +29,4 @@ export async function fetchPosts() {
 export { formatDate, formatAUD }
 
 // Re-export the debounce hook (currently broken import)
-export { useThrottle as useSearchDebounce }
+export { useDebounce as useSearchDebounce }

packages/ui/src/components/Button/Button.tsx

@@ -2,16 +2,12 @@ import React from "react"
 
 type Variant = "primary" | "secondary" | "danger"
 
-type Props = {
+type Props = React.ButtonHTMLAttributes<HTMLButtonElement> & {
   children?: React.ReactNode
   /** Icon-only button — renders without visible text. Requires aria-label for accessibility. */
   icon?: React.ReactNode
   iconOnly?: boolean
   variant?: Variant
-  disabled?: boolean
-  onClick?: () => void
-  /** Accessible label — REQUIRED when iconOnly is true */
-  "aria-label"?: string
 }
 
 /**
@@ -30,17 +26,15 @@ export function Button({
   icon,
   iconOnly = false,
   variant = "primary",
-  disabled = false,
-  onClick,
   "aria-label": ariaLabel,
+  ...rest
 }: Props) {
+  const resolvedAriaLabel = ariaLabel ?? (iconOnly ? "icon button" : undefined)
   return (
     <button
       className={`btn btn-${variant}`}
-      disabled={disabled}
-      onClick={onClick}
-      // BUG: aria-label is not applied when iconOnly is true and no ariaLabel is passed
-      // The component should enforce aria-label for icon-only buttons
+      aria-label={resolvedAriaLabel}
+      {...rest}
     >
       {icon && <span className="btn-icon">{icon}</span>}
       {!iconOnly && children}

packages/ui/src/components/DataTable/DataTable.tsx

@@ -31,7 +31,7 @@ export function DataTable<T extends Record<string, unknown>>({ data, columns }:
   // BUG: stale closure — sortDir is captured at handler creation time
   const handleSort = (key: keyof T) => {
     if (sortKey === key) {
-      setSortDir(sortDir === "asc" ? "desc" : "asc") // BUG: reads stale sortDir
+      setSortDir(prev => prev === "asc" ? "desc" : "asc")
     } else {
       setSortKey(key)
       setSortDir("asc")

packages/utils/src/format/date.ts

@@ -1,26 +1,21 @@
-/**
- * Date formatting utilities.
- *
- * BUG: formatDate passes `'en-AU'` as the locale but then uses a US-style
- * format string option (`month: 'numeric'` before `day: 'numeric'`), which
- * produces MM/DD/YYYY output instead of DD/MM/YYYY for Australian dates.
- *
- * Fix: use `dateStyle: 'short'` with `'en-AU'` locale, which correctly
- * produces DD/MM/YYYY, or explicitly set `day: 'numeric', month: 'numeric', year: 'numeric'`
- * and rely on the locale to order them correctly.
- */
+const DATE_FIELDS: Intl.DateTimeFormatOptions = {
+  day: "2-digit",
+  month: "2-digit",
+  year: "numeric",
+}
+
+function formatDateParts(date: Date, extra?: Intl.DateTimeFormatOptions): string {
+  const opts = extra ? { ...DATE_FIELDS, ...extra } : DATE_FIELDS
+  const parts = new Intl.DateTimeFormat("en-AU", opts).formatToParts(date)
+  return parts
+    .map((p) => (p.type === "day" ? String(parseInt(p.value, 10)) : p.value))
+    .join("")
+}
+
 export function formatDate(date: Date): string {
-  // BUG: explicit field order overrides locale ordering — produces M/D/YYYY not D/M/YYYY
-  return new Intl.DateTimeFormat("en-AU", {
-    month: "numeric",
-    day: "numeric",
-    year: "numeric",
-  }).format(date)
+  return formatDateParts(date)
 }
 
 export function formatDateTime(date: Date): string {
-  return new Intl.DateTimeFormat("en-AU", {
-    dateStyle: "short",
-    timeStyle: "short",
-  }).format(date)
+  return formatDateParts(date, { hour: "2-digit", minute: "2-digit" })
 }

tsconfig.json

@@ -6,6 +6,7 @@
     "jsx": "react-jsx",
     "strict": true,
     "skipLibCheck": true,
+    "types": ["bun-types"],
     "paths": {
       "@e2e/ui": ["./packages/ui/src/index.ts"],
       "@e2e/utils": ["./packages/utils/src/index.ts"]