config.ts

import { DynamoDBClient } from "@aws-sdk/client-dynamodb"
import { DynamoDBDocumentClient } from "@aws-sdk/lib-dynamodb"

export const ddbClient = new DynamoDBClient({
    region: 'ap-southeast-1',
    endpoint: 'http://localhost:65000',
    credentials: {
        accessKeyId: 'dummy',
        secretAccessKey: 'dummy',
    }
})

const marshallOptions = {
    // Whether to automatically convert empty strings, blobs, and sets to `null`.
    convertEmptyValues: false, // false, by default.
    // Whether to remove undefined values while marshalling.
    removeUndefinedValues: false, // false, by default.
    // Whether to convert typeof object to map attribute.
    convertClassInstanceToMap: false, // false, by default.
};

const unmarshallOptions = {
    // Whether to return numbers as a string instead of converting them to native JavaScript numbers.
    wrapNumbers: false, // false, by default.
};

const translateConfig = { marshallOptions, unmarshallOptions };

export const ddbDocClient = DynamoDBDocumentClient.from(ddbClient, translateConfig)