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source dump of claude code forked from oppi.li/claude-code
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2.1 kB · 54 lines
TypeScript
at main
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455// highlight.js's type defs carry `/// <reference lib="dom" />`. SSETransport,// mcp/client, ssh, dumpPrompts use DOM types (TextDecodeOptions, RequestInfo)// that only typecheck because this file's `typeof import('highlight.js')` pulls// lib.dom in. tsconfig has lib: ["ESNext"] only — fixing the actual DOM-type// deps is a separate sweep; this ref preserves the status quo./// <reference lib="dom" />
import { extname } from 'path'
export type CliHighlight = { highlight: typeof import('cli-highlight').highlight supportsLanguage: typeof import('cli-highlight').supportsLanguage}
// One promise shared by Fallback.tsx, markdown.ts, events.ts, getLanguageName.// The highlight.js import piggybacks: cli-highlight has already pulled it into// the module cache, so the second import() is a cache hit — no extra bytes// faulted in.let cliHighlightPromise: Promise<CliHighlight | null> | undefined
let loadedGetLanguage: typeof import('highlight.js').getLanguage | undefined
async function loadCliHighlight(): Promise<CliHighlight | null> { try { const cliHighlight = await import('cli-highlight') // cache hit — cli-highlight already loaded highlight.js const highlightJs = await import('highlight.js') loadedGetLanguage = highlightJs.getLanguage return { highlight: cliHighlight.highlight, supportsLanguage: cliHighlight.supportsLanguage, } } catch { return null }}
export function getCliHighlightPromise(): Promise<CliHighlight | null> { cliHighlightPromise ??= loadCliHighlight() return cliHighlightPromise}
/** * eg. "foo/bar.ts" → "TypeScript". Awaits the shared cli-highlight load, * then reads highlight.js's language registry. All callers are telemetry * (OTel counter attributes, permission-dialog unary events) — none block * on this, they fire-and-forget or the consumer already handles Promise<string>. */export async function getLanguageName(file_path: string): Promise<string> { await getCliHighlightPromise() const ext = extname(file_path).slice(1) if (!ext) return 'unknown' return loadedGetLanguage?.(ext)?.name ?? 'unknown'}