是的，可以使用 AWS Cognito 与本地 SAML IdP 和社交媒体账户配合使用。可以使用 Cognito User Pool 的联合身份提供商功能来实现。

以下是一个示例代码，演示如何配置 AWS Cognito 与本地 SAML IdP 和社交媒体账户配合使用：

const AWS = require('aws-sdk');
const AmazonCognitoIdentity = require('amazon-cognito-identity-js');

// Set up Cognito configuration
const poolData = {
    UserPoolId: 'your_user_pool_id',
    ClientId: 'your_app_client_id',
};

const userPool = new AmazonCognitoIdentity.CognitoUserPool(poolData);

// Set up SAML IdP configuration
const samlProvider = new AWS.CognitoIdentityServiceProvider();
const samlIdPName = 'your_saml_idp_name';

// Set up social media provider configuration
const socialProvider = new AWS.CognitoIdentityServiceProvider();
const socialProviderName = 'your_social_media_provider_name';

// Register SAML IdP and social media provider with Cognito User Pool
const providers = [
    {
        ProviderName: samlIdPName,
        ProviderType: 'SAML',
        ProviderDetails: {
            MetadataURL: 'your_saml_metadata_url',
        },
    },
    {
        ProviderName: socialProviderName,
        ProviderType: 'Facebook',
        ProviderDetails: {
            client_id: 'your_facebook_app_client_id',
            client_secret: 'your_facebook_app_client_secret',
        },
    },
];

userPool.setSamlProviders(providers, (err, data) => {
    if (err) {
        console.error(err);
    } else {
        console.log(data);
    }
});

// Authenticate with either SAML IdP or social media account
const authData = {
    Username: 'your_username',
    Password: 'your_password',
};

const authDetails = new AmazonCognitoIdentity.AuthenticationDetails(authData);

const userData = {
    Username: 'your_username',
    Pool: userPool,
};

const cognitoUser = new AmazonCognitoIdentity.CognitoUser(userData);

// Authenticate with SAML IdP