Function decode

packages/service-worker/test/comm_spec.ts:196–199

(charCodeArr: Uint8Array)

      it('calls `PushManager.subscribe()` (with appropriate options)', async () => {
        const decode = (charCodeArr: Uint8Array) =>
          Array.from(charCodeArr)
            .map((c) => String.fromCharCode(c))
            .join('');

        // atob('c3ViamVjdHM/') === 'subjects?'
        const serverPublicKey = 'c3ViamVjdHM_';