Function dualThemeOptions

packages/react/src/lib/shiki.ts:135–138

(theme?: ShikiThemeProp)

/** The shiki options that render dual-theme `light-dark(...)` colors. */
export const dualThemeOptions = (theme?: ShikiThemeProp) => ({
  themes: resolveShikiThemes(theme),
  defaultColor: "light-dark()" as const,
});

export function resolveLang(lang: string): SupportedLang | null {
  const l = lang.trim().toLowerCase();