Code Block

1"use client";
2 
3import { Check, Copy } from "lucide-react";
4import { AnimatePresence, motion, useReducedMotion } from "motion/react";
5import { useCallback, useMemo, useRef, useState } from "react";
6 
7import { cn } from "@/lib/utils";
8 
9const COPY_RESET_MS = 2000;
10 
11/** Transform-only spring for the copy icon swap — stays off the layout thread. */
12const ICON_SPRING = {
13  type: "spring",
14  stiffness: 600,
15  damping: 30,
16  mass: 0.6,
17} as const;
18 
19type TokenKind =
20  | "call"
21  | "comment"
22  | "keyword"
23  | "number"
24  | "operator"
25  | "plain"
26  | "property"
27  | "punctuation"
28  | "string"
29  | "tag"
30  | "type";
31 
32type Token = {
33  kind: TokenKind;
34  value: string;
35};
36 
37const KEYWORDS = new Set([
38  "abstract",
39  "as",
40  "async",
41  "await",
42  "break",
43  "case",
44  "catch",
45  "class",
46  "const",
47  "continue",
48  "def",
49  "default",
50  "delete",
51  "do",
52  "elif",
53  "else",
54  "enum",
55  "export",
56  "extends",
57  "false",
58  "finally",
59  "fn",
60  "for",
61  "from",
62  "function",
63  "if",
64  "implements",
65  "import",
66  "in",
67  "instanceof",
68  "interface",
69  "let",
70  "match",
71  "new",
72  "None",
73  "not",
74  "null",
75  "of",
76  "pass",
77  "private",
78  "protected",
79  "public",
80  "readonly",
81  "return",
82  "satisfies",
83  "static",
84  "struct",
85  "switch",
86  "this",
87  "throw",
88  "true",
89  "try",
90  "type",
91  "typeof",
92  "undefined",
93  "var",
94  "void",
95  "while",
96  "yield",
97]);
98 
99const WHITESPACE_RE = /^\s+/;
100const BLOCK_COMMENT_RE = /^\/\*[\s\S]*?(?:\*\/|$)/;
101const LINE_COMMENT_RE = /^(?:\/\/|#)[^\n]*/;
102const TEMPLATE_STRING_RE = /^`(?:\\.|[\s\S])*?`/;
103const DOUBLE_QUOTED_STRING_RE = /^"(?:\\.|[^"\\])*"/;
104const SINGLE_QUOTED_STRING_RE = /^'(?:\\.|[^'\\])*'/;
105const TAG_RE = /^<\/?[A-Za-z][\w.-]*|^\/?>/;
106const ATTRIBUTE_RE = /^[A-Za-z_$][\w$-]*(?==)/;
107const PROPERTY_RE = /^[A-Za-z_$][\w$-]*(?=\s*:)/;
108const IDENTIFIER_RE = /^[A-Za-z_$][\w$]*/;
109const TYPE_IDENTIFIER_RE = /^[A-Z]/;
110const NUMBER_RE = /^-?\d+(?:\.\d+)?/;
111const OPERATOR_RE =
112  /^(?:=>|===|!==|==|!=|<=|>=|\+\+|--|\|\||&&|\?\?|\.\.\.|[=<>+\-*/%!?&|])/;
113const PUNCTUATION_RE = /^[{}()[\],.;:]/;
114 
115const STATIC_MATCHERS: { kind: TokenKind; regex: RegExp }[] = [
116  { kind: "plain", regex: WHITESPACE_RE },
117  { kind: "comment", regex: BLOCK_COMMENT_RE },
118  { kind: "comment", regex: LINE_COMMENT_RE },
119  { kind: "string", regex: TEMPLATE_STRING_RE },
120  { kind: "string", regex: DOUBLE_QUOTED_STRING_RE },
121  { kind: "string", regex: SINGLE_QUOTED_STRING_RE },
122  { kind: "tag", regex: TAG_RE },
123  { kind: "property", regex: ATTRIBUTE_RE },
124// … truncated