Function __symbol__

packages/zone.js/lib/zone-impl.ts:766–772

(name: string)

// __Zone_symbol_prefix can be set globally to override the default zone symbol prefix.
export function __symbol__(name: string) {
  const rawPrefix = global['__Zone_symbol_prefix'];
  // Guard against DOM clobbering: an attacker can set __Zone_symbol_prefix to an HTMLElement
  // via e.g. <input name="__Zone_symbol_prefix">, so we only trust it if it's actually a string.
  const symbolPrefix = typeof rawPrefix === 'string' ? rawPrefix : '__zone_symbol__';
  return symbolPrefix + name;
}

export function initZone(): ZoneType {
  const performance: {mark(name: string): void; measure(name: string, label: string): void} =