AWS Javascript SDK V3 与 Typescript

Question

Has anyone used AWS javascript sdk v3 with typescript. I am trying to figure out how to use types in my lambda function. For example in this code snippet what should I use for the return type and how do I get/import type declations? Thank you

getAllIamUsers(): ?? {
        
        const input = {
            MaxItems: 100,
            Marker: null
        };     
        
       const command = new ListUsersCommand(input);
       const usersResponse = await client.send(command); 
       return usersResponse.Users;       

    }

Answer 1

For correct Lambda handler types you have to use the aws-lambda package that provides the Handler type:

import { Handler } from 'aws-lambda';
import { IAMClient, ListUsersRequest, ListUsersCommand, ListUsersCommandOutput } from '@aws-sdk/client-iam';

export const getAllIamUsers: Handler = async (event, context, callback) => {

    const input: ListUsersRequest = {
        MaxItems: 100,
        Marker: undefined
    };

    const command = new ListUsersCommand(input);
    const usersResponse = await client.send(command);
    return usersResponse.Users;
}

Optionally, you could specify the event and result type via generica Handler<Event, Result> .