Method credential

packages/firebase-auth/index.ios.ts:797–815

(optionsOrIdToken: OAuthCredentialOptions | string | null, accessToken?: string)

	}

	credential(optionsOrIdToken: OAuthCredentialOptions | string | null, accessToken?: string) {
		let provider;
		if (!optionsOrIdToken && accessToken) {
			provider = FIROAuthProvider.credentialWithProviderIDAccessToken(this._providerId, accessToken);
		} else if (optionsOrIdToken) {
			if (typeof optionsOrIdToken === 'string') {
				provider = FIROAuthProvider.credentialWithProviderIDAccessToken(this._providerId, optionsOrIdToken);
			} else if (typeof optionsOrIdToken === 'object') {
				if (optionsOrIdToken.idToken && !optionsOrIdToken.rawNonce) {
					provider = FIROAuthProvider.credentialWithProviderIDIDTokenAccessToken(this._providerId, optionsOrIdToken.idToken, optionsOrIdToken.accessToken);
				} else if (optionsOrIdToken.idToken && optionsOrIdToken.rawNonce) {
					provider = FIROAuthProvider.credentialWithProviderIDIDTokenRawNonce(this._providerId, optionsOrIdToken.idToken, optionsOrIdToken.rawNonce);
				} else {
					provider = FIROAuthProvider.credentialWithProviderIDIDTokenRawNonceAccessToken(this._providerId, optionsOrIdToken.idToken, optionsOrIdToken.rawNonce, optionsOrIdToken.accessToken);
				}
			}
		}
		return OAuthCredential.fromNative(provider);
	}
}

export class TwitterAuthProvider {