Method start

third_party/subscriptions-project/swg.js:18027–18067

* @param {!PaymentDataRequest} paymentRequest * @param {!PayOptionsDef=} options

(paymentRequest, options = {})

   * @param {!PayOptionsDef=} options
   */
  start(paymentRequest, options = {}) {
    this.request_ = paymentRequest;

    if (!this.client_) {
      this.preconnect(this.preconnect_);
      this.initializePaymentsClient_();
    }
    if (options.forceRedirect) {
      paymentRequest = Object.assign(paymentRequest, {
        'forceRedirect': options.forceRedirect || false,
      });
    }
    setInternalParam(
      paymentRequest,
      'disableNative',
      // The page cannot be iframed at this time. May be relaxed later
      // for AMP and similar contexts.
      options.forceDisableNative || this.win_ != this.top_()
    );
    let resolver = null;
    const promise = new Promise((resolve) => (resolver = resolve));
    // Notice that the callback for verifier may execute asynchronously.
    this.redirectVerifierHelper_.useVerifier((verifier) => {
      if (verifier) {
        setInternalParam(paymentRequest, 'redirectVerifier', verifier);
      }
      if (options.forceRedirect) {
        const client = this.client_;
        this.eventManager_.getReadyPromise().then(() => {
          this.analytics_.getLoggingPromise().then(() => {
            client.loadPaymentData(paymentRequest);
            resolver(true);
          });
        });
      } else {
        this.client_.loadPaymentData(paymentRequest);
        resolver(true);
      }
    });
    return promise;
  }

  /**
   * @param {function(!Promise<!PaymentData>)} callback