Variable default

default: {
    websocket: (
        module: Promise<dist/wasm/perspective-js.d.ts>,
        url: string | URL,
    ) => Promise<Client>;
    worker: (
        module: Promise<dist/wasm/perspective-js.d.ts>,
        server_wasm: Promise<Module>,
        perspective_wasm_worker: Promise<ServiceWorker | SharedWorker | Worker>,
    ) => Promise<Client>;
}