Command Palette

1"use client";
2// beui.dev/components/blocks/command-palette
3 
4import { motion, useReducedMotion } from "motion/react";
5import { Search, type LucideIcon } from "lucide-react";
6import {
7  type ReactNode,
8  useCallback,
9  useEffect,
10  useId,
11  useMemo,
12  useRef,
13  useState,
14} from "react";
15import { createPortal } from "react-dom";
16import { EASE_OUT } from "@/lib/ease";
17import { cn } from "@/lib/utils";
18 
19export type CommandItem = {
20  id: string;
21  label: string;
22  group?: string;
23  hint?: string;
24  keywords?: string[];
25  icon?: LucideIcon;
26  badge?: ReactNode;
27  onSelect: () => void;
28};
29 
30export interface CommandPaletteProps {
31  items: CommandItem[];
32  /** Opens with Cmd/Ctrl + this key. Default: "k" */
33  shortcut?: string;
34  placeholder?: string;
35  emptyMessage?: string;
36  open?: boolean;
37  onOpenChange?: (open: boolean) => void;
38}
39 
40function fuzzyMatch(needle: string, hay: string) {
41  if (!needle) return true;
42  needle = needle.toLowerCase();
43  hay = hay.toLowerCase();
44  let i = 0;
45  for (const ch of hay) {
46    if (ch === needle[i]) i++;
47    if (i === needle.length) return true;
48  }
49  return false;
50}
51 
52// Opened via a keyboard shortcut many times a day — entrance must read as
53// instant. Tight spring, even faster exit.
54const PANEL_SPRING = {
55  type: "spring",
56  stiffness: 560,
57  damping: 40,
58  mass: 0.5,
59} as const;
60 
61export function CommandPalette({
62  items,
63  shortcut = "k",
64  placeholder = "Type a command or search…",
65  emptyMessage = "No results found.",
66  open: controlledOpen,
67  onOpenChange,
68}: CommandPaletteProps) {
69  const [internalOpen, setInternalOpen] = useState(false);
70  const controlled = controlledOpen !== undefined;
71  const open = controlled ? controlledOpen : internalOpen;
72  const setOpen = useCallback(
73    (v: boolean) => {
74      if (!controlled) setInternalOpen(v);
75      onOpenChange?.(v);
76    },
77    [controlled, onOpenChange],
78  );
79 
80  const [query, setQuery] = useState("");
81  const [active, setActive] = useState(0);
82  // Portal target only exists client-side; render nothing during SSR/hydration.
83  const [mounted, setMounted] = useState(false);
84  useEffect(() => setMounted(true), []);
85  const uid = useId();
86  const reduce = useReducedMotion();
87  const updateQuery = useCallback((value: string) => {
88    setQuery(value);
89    setActive(0);
90  }, []);
91  const inputRef = useRef<HTMLInputElement>(null);
92  const listRef = useRef<HTMLDivElement>(null);
93 
94  useEffect(() => {
95    const onKey = (e: KeyboardEvent) => {
96      if (
97// … truncated