Method provider

packages/firebase-auth/index.ios.ts:681–689

(auth?: Auth)

	}

	static provider(auth?: Auth) {
		const provider = new PhoneAuthProvider();
		if (auth) {
			provider._native = FIRPhoneAuthProvider.providerWithAuth(auth.native);
		} else {
			provider._native = FIRPhoneAuthProvider.provider();
		}
		return provider;
	}

	credential(verificationId: string, verificationCode: string) {
		return AuthCredential.fromNative(this._native.credentialWithVerificationIDVerificationCode(verificationId, verificationCode));