Function isCustomThemeId

packages/shared-domain/src/custom-themes.ts:226–228

(themeId: string)

/** Whether a theme id refers to a custom theme. */
export function isCustomThemeId(themeId: string): boolean {
  return CUSTOM_ID_RE.test(themeId)
}

/** Whether a theme provides the given mode (single-mode themes pin their one). */
export function customThemeSupportsMode(