oppi.li
source dump of claude code
1// highlight.js's type defs carry `/// <reference lib="dom" />`. SSETransport,
2// mcp/client, ssh, dumpPrompts use DOM types (TextDecodeOptions, RequestInfo)
3// that only typecheck because this file's `typeof import('highlight.js')` pulls
4// lib.dom in. tsconfig has lib: ["ESNext"] only — fixing the actual DOM-type
5// deps is a separate sweep; this ref preserves the status quo.
6/// <reference lib="dom" />
7
8import { extname } from 'path'
9
10export type CliHighlight = {
11 highlight: typeof import('cli-highlight').highlight
12 supportsLanguage: typeof import('cli-highlight').supportsLanguage
13}
14
15// One promise shared by Fallback.tsx, markdown.ts, events.ts, getLanguageName.
16// The highlight.js import piggybacks: cli-highlight has already pulled it into
17// the module cache, so the second import() is a cache hit — no extra bytes
18// faulted in.
19let cliHighlightPromise: Promise<CliHighlight | null> | undefined
20
21let loadedGetLanguage: typeof import('highlight.js').getLanguage | undefined
22
23async function loadCliHighlight(): Promise<CliHighlight | null> {
24 try {
25 const cliHighlight = await import('cli-highlight')
26 // cache hit — cli-highlight already loaded highlight.js
27 const highlightJs = await import('highlight.js')
28 loadedGetLanguage = highlightJs.getLanguage
29 return {
30 highlight: cliHighlight.highlight,
31 supportsLanguage: cliHighlight.supportsLanguage,
32 }
33 } catch {
34 return null
35 }
36}
37
38export function getCliHighlightPromise(): Promise<CliHighlight | null> {
39 cliHighlightPromise ??= loadCliHighlight()
40 return cliHighlightPromise
41}
42
43/**
44 * eg. "foo/bar.ts" → "TypeScript". Awaits the shared cli-highlight load,
45 * then reads highlight.js's language registry. All callers are telemetry
46 * (OTel counter attributes, permission-dialog unary events) — none block
47 * on this, they fire-and-forget or the consumer already handles Promise<string>.
48 */
49export async function getLanguageName(file_path: string): Promise<string> {
50 await getCliHighlightPromise()
51 const ext = extname(file_path).slice(1)
52 if (!ext) return 'unknown'
53 return loadedGetLanguage?.(ext)?.name ?? 'unknown'
54}