var str: string = "any string";
var date: Date = new Date();
var anyObj: any = { abc: 123 };
var num: number = 5;
var error: Error = new Error();
var b: boolean = true;
var apiGwEvt: AWSLambda.APIGatewayEvent;
var customAuthorizerEvt: AWSLambda.CustomAuthorizerEvent;
var clientCtx: AWSLambda.ClientContext;
var clientContextEnv: AWSLambda.ClientContextEnv;
var clientContextClient: AWSLambda.ClientContextClient;
var context: AWSLambda.Context;
var identity: AWSLambda.CognitoIdentity;
var proxyResult: AWSLambda.ProxyResult;
var authResponse: AWSLambda.AuthResponse;
var policyDocument: AWSLambda.PolicyDocument;
var statement: AWSLambda.Statement;
var authResponseContext: AWSLambda.AuthResponseContext;
var snsEvt: AWSLambda.SNSEvent;
var snsEvtRecs: AWSLambda.SNSEventRecord[];
var snsEvtRec: AWSLambda.SNSEventRecord;
var snsMsg: AWSLambda.SNSMessage;
var snsMsgAttr: AWSLambda.SNSMessageAttribute;
var snsMsgAttrs: AWSLambda.SNSMessageAttributes;
var S3EvtRec: AWSLambda.S3EventRecord = {  
    eventVersion: '2.0',
    eventSource: 'aws:s3',
    awsRegion: 'us-east-1',
    eventTime: '1970-01-01T00:00:00.000Z',
    eventName: 'ObjectCreated:Put',
    userIdentity: {  
        principalId: 'AIDAJDPLRKLG7UEXAMPLE'
    },
    requestParameters:{  
        sourceIPAddress: '127.0.0.1'
    },
    responseElements: {  
        'x-amz-request-id': 'C3D13FE58DE4C810',
        'x-amz-id-2': 'FMyUVURIY8/IgAtTv8xRjskZQpcIZ9KG4V5Wp6S7S/JRWeUWerMUE5JgHvANOjpD'
    },
    s3: {  
        s3SchemaVersion: '1.0',
        configurationId: 'testConfigRule',
        bucket: {  
            name: 'mybucket',
            ownerIdentity: {  
                principalId: 'A3NL1KOZZKExample'
            },
            arn: 'arn:aws:s3:::mybucket'
        },
        object: {  
            key: 'HappyFace.jpg',
            size: 1024,
            eTag: 'd41d8cd98f00b204e9800998ecf8427e',
            versionId: '096fKKXTRTtl3on89fVO.nfljtsv6qko',
            sequencer: '0055AED6DCD90281E5'
        }
    }
};

var S3CreateEvent: AWSLambda.S3CreateEvent = {
    Records: [S3EvtRec]
};
var cognitoUserPoolEvent: AWSLambda.CognitoUserPoolEvent;
var cloudformationCustomResourceEvent: AWSLambda.CloudFormationCustomResourceEvent;
var cloudformationCustomResourceResponse: AWSLambda.CloudFormationCustomResourceResponse;

/* API Gateway Event */
str = apiGwEvt.body;
str = apiGwEvt.headers["example"];
str = apiGwEvt.httpMethod;
b = apiGwEvt.isBase64Encoded;
str = apiGwEvt.path;
str = apiGwEvt.pathParameters["example"];
str = apiGwEvt.queryStringParameters["example"];
str = apiGwEvt.stageVariables["example"];
str = apiGwEvt.requestContext.accountId;
str = apiGwEvt.requestContext.apiId;
str = apiGwEvt.requestContext.httpMethod;
str = apiGwEvt.requestContext.identity.accessKey;
str = apiGwEvt.requestContext.identity.accountId;
str = apiGwEvt.requestContext.identity.apiKey;
str = apiGwEvt.requestContext.identity.caller;
str = apiGwEvt.requestContext.identity.cognitoAuthenticationProvider;
str = apiGwEvt.requestContext.identity.cognitoAuthenticationType;
str = apiGwEvt.requestContext.identity.cognitoIdentityId;
str = apiGwEvt.requestContext.identity.cognitoIdentityPoolId;
str = apiGwEvt.requestContext.identity.sourceIp;
str = apiGwEvt.requestContext.identity.user;
str = apiGwEvt.requestContext.identity.userAgent;
str = apiGwEvt.requestContext.identity.userArn;
str = apiGwEvt.requestContext.stage;
str = apiGwEvt.requestContext.requestId;
str = apiGwEvt.requestContext.resourceId;
str = apiGwEvt.requestContext.resourcePath;
str = apiGwEvt.resource;

/* API Gateway CustomAuthorizer Event */
str = customAuthorizerEvt.type;
str = customAuthorizerEvt.authorizationToken;
str = customAuthorizerEvt.methodArn;

/* DynamoDB Stream Event */
var dynamoDBStreamEvent: DynamoDBStreamEvent = {
  "Records": [
    {
      "eventID": "1",
      "eventVersion": "1.0",
      "dynamodb": {
        "Keys": {
          "Id": {
            "N": "101"
          }
        },
        "NewImage": {
          "Message": {
            "S": "New item!"
          },
          "Id": {
            "N": "101"
          }
        },
        "StreamViewType": "NEW_AND_OLD_IMAGES",
        "SequenceNumber": "111",
        "SizeBytes": 26
      },
      "awsRegion": "us-west-2",
      "eventName": "INSERT",
      "eventSourceARN": "arn:aws:dynamodb:us-west-2:account-id:table/ExampleTableWithStream/stream/2015-06-27T00:48:05.899",
      "eventSource": "aws:dynamodb"
    },
    {
      "eventID": "2",
      "eventVersion": "1.0",
      "dynamodb": {
        "OldImage": {
          "Message": {
            "S": "New item!"
          },
          "Id": {
            "N": "101"
          }
        },
        "SequenceNumber": "222",
        "Keys": {
          "Id": {
            "N": "101"
          }
        },
        "SizeBytes": 59,
        "NewImage": {
          "Message": {
            "S": "This item has changed"
          },
          "Id": {
            "N": "101"
          }
        },
        "StreamViewType": "NEW_AND_OLD_IMAGES"
      },
      "awsRegion": "us-west-2",
      "eventName": "MODIFY",
      "eventSourceARN": "arn:aws:dynamodb:us-west-2:account-id:table/ExampleTableWithStream/stream/2015-06-27T00:48:05.899",
      "eventSource": "aws:dynamodb"
    },
    {
      "eventID": "3",
      "eventVersion": "1.0",
      "dynamodb": {
        "Keys": {
          "Id": {
            "N": "101"
          }
        },
        "SizeBytes": 38,
        "SequenceNumber": "333",
        "OldImage": {
          "Message": {
            "S": "This item has changed"
          },
          "Id": {
            "N": "101"
          }
        },
        "StreamViewType": "NEW_AND_OLD_IMAGES"
      },
      "awsRegion": "us-west-2",
      "eventName": "REMOVE",
      "eventSourceARN": "arn:aws:dynamodb:us-west-2:account-id:table/ExampleTableWithStream/stream/2015-06-27T00:48:05.899",
      "eventSource": "aws:dynamodb"
    }
  ]
};

/* SNS Event */
snsEvtRecs = snsEvt.Records;

str = snsEvtRec.EventSource;
str = snsEvtRec.EventSubscriptionArn;
str = snsEvtRec.EventVersion;
snsMsg = snsEvtRec.Sns;

str = snsMsg.SignatureVersion;
str = snsMsg.Timestamp;
str = snsMsg.Signature;
str = snsMsg.SigningCertUrl;
str = snsMsg.MessageId;
str = snsMsg.Message;
snsMsgAttrs = snsMsg.MessageAttributes;
str = snsMsg.Type;
str = snsMsg.UnsubscribeUrl;
str = snsMsg.TopicArn;
str = snsMsg.Subject;

snsMsgAttrs["example"] = snsMsgAttr;

str = snsMsgAttr.Type;
str = snsMsgAttr.Value;

/* Lambda Proxy Result */
num = proxyResult.statusCode;
proxyResult.headers["example"] = str;
proxyResult.headers["example"] = b;
proxyResult.headers["example"] = num;
b = proxyResult.isBase64Encoded;
str = proxyResult.body;

/* API Gateway CustomAuthorizer AuthResponse */
authResponseContext = {
    stringKey: str,
    numberKey: num,
    booleanKey: b
};

statement = {
    Action: str,
    Effect: str,
    Resource: str
};

statement = {
    Action: [str, str],
    Effect: str,
    Resource: [str, str]
};

policyDocument = {
    Version: str,
    Statement: [statement]
};

authResponse = {
    principalId: str,
    policyDocument: policyDocument,
    context: authResponseContext
};

authResponse = {
    principalId: str,
    policyDocument: policyDocument
};

// CognitoUserPoolEvent
num = cognitoUserPoolEvent.version;
cognitoUserPoolEvent.triggerSource === "PreSignUp_SignUp";
cognitoUserPoolEvent.triggerSource === "PostConfirmation_ConfirmSignUp";
cognitoUserPoolEvent.triggerSource === "PreAuthentication_Authentication";
cognitoUserPoolEvent.triggerSource === "PostAuthentication_Authentication";
cognitoUserPoolEvent.triggerSource === "CustomMessage_SignUp";
cognitoUserPoolEvent.triggerSource === "CustomMessage_AdminCreateUser";
cognitoUserPoolEvent.triggerSource === "CustomMessage_ResendCode";
cognitoUserPoolEvent.triggerSource === "CustomMessage_ForgotPassword";
cognitoUserPoolEvent.triggerSource === "CustomMessage_UpdateUserAttribute";
cognitoUserPoolEvent.triggerSource === "CustomMessage_VerifyUserAttribute";
cognitoUserPoolEvent.triggerSource === "CustomMessage_Authentication";
cognitoUserPoolEvent.triggerSource === "DefineAuthChallenge_Authentication";
cognitoUserPoolEvent.triggerSource === "CreateAuthChallenge_Authentication";
cognitoUserPoolEvent.triggerSource === "VerifyAuthChallengeResponse_Authentication";
str = cognitoUserPoolEvent.region;
str = cognitoUserPoolEvent.userPoolId;
str = cognitoUserPoolEvent.userName;
str = cognitoUserPoolEvent.callerContext.awsSdkVersion;
str = cognitoUserPoolEvent.callerContext.clientId;
str = cognitoUserPoolEvent.request.userAttributes["email"];
str = cognitoUserPoolEvent.request.validationData["k1"];
str = cognitoUserPoolEvent.request.codeParameter;
str = cognitoUserPoolEvent.request.usernameParameter;
b = cognitoUserPoolEvent.request.newDeviceUsed;
cognitoUserPoolEvent.request.session[0].challengeName === "CUSTOM_CHALLENGE";
cognitoUserPoolEvent.request.session[0].challengeName === "PASSWORD_VERIFIER";
cognitoUserPoolEvent.request.session[0].challengeName === "SMS_MFA";
cognitoUserPoolEvent.request.session[0].challengeName === "DEVICE_SRP_AUTH";
cognitoUserPoolEvent.request.session[0].challengeName === "DEVICE_PASSWORD_VERIFIER";
cognitoUserPoolEvent.request.session[0].challengeName === "ADMIN_NO_SRP_AUTH";
b = cognitoUserPoolEvent.request.session[0].challengeResult;
str = cognitoUserPoolEvent.request.session[0].challengeMetaData;
str = cognitoUserPoolEvent.request.challengeName;
str = cognitoUserPoolEvent.request.privateChallengeParameters["answer"];
str = cognitoUserPoolEvent.request.challengeAnswer["answer"];
b = cognitoUserPoolEvent.response.answerCorrect;
str = cognitoUserPoolEvent.response.smsMessage;
str = cognitoUserPoolEvent.response.emailMessage;
str = cognitoUserPoolEvent.response.emailSubject;
str = cognitoUserPoolEvent.response.challengeName;
b = cognitoUserPoolEvent.response.issueTokens;
b = cognitoUserPoolEvent.response.failAuthentication;
str = cognitoUserPoolEvent.response.publicChallengeParameters["captchaUrl"];
str = cognitoUserPoolEvent.response.privateChallengeParameters["answer"];
str = cognitoUserPoolEvent.response.challengeMetaData;
b = cognitoUserPoolEvent.response.answerCorrect;

// CloudFormation Custom Resource
switch (cloudformationCustomResourceEvent.RequestType) {
    case "Create":
        str = cloudformationCustomResourceEvent.LogicalResourceId;
        str = cloudformationCustomResourceEvent.RequestId;
        anyObj = cloudformationCustomResourceEvent.ResourceProperties;
        str = cloudformationCustomResourceEvent.ResourceProperties.ServiceToken;
        str = cloudformationCustomResourceEvent.ResourceType;
        str = cloudformationCustomResourceEvent.ResponseURL;
        str = cloudformationCustomResourceEvent.ServiceToken;
        str = cloudformationCustomResourceEvent.StackId;
    break;
    case "Update":
        anyObj = cloudformationCustomResourceEvent.OldResourceProperties;
    break;
    case "Delete":
        str = cloudformationCustomResourceEvent.PhysicalResourceId;
    break;
}
anyObj = cloudformationCustomResourceResponse.Data;
str = cloudformationCustomResourceResponse.LogicalResourceId;
str = cloudformationCustomResourceResponse.PhysicalResourceId;
str = cloudformationCustomResourceResponse.Reason;
str = cloudformationCustomResourceResponse.RequestId;
str = cloudformationCustomResourceResponse.StackId;
str = cloudformationCustomResourceResponse.Status;

/* Context */
b = context.callbackWaitsForEmptyEventLoop;
str = context.functionName;
str = context.functionVersion;
str = context.invokedFunctionArn;
num = context.memoryLimitInMB;
str = context.awsRequestId;
str = context.logGroupName;
str = context.logStreamName;
identity = context.identity;
clientCtx = context.clientContext;

/* CognitoIdentity */
str = identity.cognitoIdentityId;
str = identity.cognitoIdentityPoolId;

/* ClientContext */
clientContextClient = clientCtx.client;
anyObj = clientCtx.Custom;
clientContextEnv = clientCtx.env;

/* ClientContextEnv */
str = clientContextEnv.locale;
str = clientContextEnv.make;
str = clientContextEnv.model;
str = clientContextEnv.platform;
str = clientContextEnv.platformVersion;

/* ClientContextClient */
str = clientContextClient.appPackageName;
str = clientContextClient.appTitle;
str = clientContextClient.appVersionCode;
str = clientContextClient.appVersionName;
str = clientContextClient.installationId;

/* Callback */
function callback(cb: AWSLambda.Callback) {
    cb();
    cb(null);
    cb(error);
    cb(null, anyObj);
}

/* Proxy Callback */
function proxyCallback(cb: AWSLambda.ProxyCallback) {
    cb();
    cb(null);
    cb(error);
    cb(null, proxyResult);
}

/* CustomAuthorizerCallback */
function customAuthorizerCallback(cb: AWSLambda.CustomAuthorizerCallback) {
    cb();
    cb(null);
    cb(error);
    cb(null, authResponse);
}

/* Compatibility functions */
context.done();
context.done(error);
context.done(error, anyObj);
context.succeed(str);
context.succeed(anyObj);
context.succeed(str, anyObj);
context.fail(error);
context.fail(str);

/* Handler */
let handler: AWSLambda.Handler = (event: any, context: AWSLambda.Context, cb: AWSLambda.Callback) => { };
let proxyHandler: AWSLambda.ProxyHandler = (event: AWSLambda.APIGatewayEvent, context: AWSLambda.Context, cb: AWSLambda.ProxyCallback) => { };
let CustomAuthorizerHandler: AWSLambda.CustomAuthorizerHandler = (event: AWSLambda.CustomAuthorizerEvent, context: AWSLambda.Context, cb: AWSLambda.CustomAuthorizerCallback) => { };