s3 js-v3

s3.js

const s3_bucket = process.env.AWS_BUCKET;
const s3_region = process.env.AWS_REGION;

(async function () {

    const {
        S3Client,
        ListObjectsCommand,
        GetObjectCommand,
        PutObjectCommand,
        DeleteObjectCommand
    } = require("@aws-sdk/client-s3");

    const client = new S3Client({
        AWS_REGION: s3_region
    });

    async function listData(callback) {
        return new Promise(function (resolve, reject) {
            const command = new ListObjectsCommand({ Bucket: s3_bucket });
            try {
                client.send(command).then(function (data) {
                    var keys = data.Contents.map((d) => d.Key);
                    if (callback) callback(keys)
                    resolve(keys)
                })
            } catch (error) {
                reject(error)
            }
        });
    }

    async function setData(key, value, callback) {
        return new Promise(function (resolve, reject) {
            const command = new PutObjectCommand({ Bucket: s3_bucket, Key: key, Body: value });
            try {
                client.send(command).then(() => {
                    if (callback)
                        callback("success");
                    resolve("success")
                });
            } catch (error) {
                reject(error)
            }
        });
    }

    async function getData(key, callback) {
        var body = "";
        return new Promise(function (resolve, reject) {
            const command = new GetObjectCommand({ Bucket: s3_bucket, Key: key });
            try {
                client.send(command).then(function (data) {
                    if (data.Body && callback) {
                        data.Body.on('readable', function () {
                            var s = data.Body.read();
                            if (s)
                                body += s;
                        });
                        data.Body.on('end', function () {
                            callback(body)
                            resolve(body)
                        })
                    }
                });
            } catch (error) {
                reject(error)
            }
        });
    }

    async function rmData(key, callback) {
        return new Promise(function (resolve, reject) {
            const command = new DeleteObjectCommand({ Bucket: s3_bucket, Key: key });
            try {
                client.send(command).then(() => {
                    if (callback)
                        callback("success");
                    resolve("success")
                });
            } catch (error) {
                reject(error)
            }
        });
    }

    
    await listData((list) => console.log(list));

    await setData("test-key", "test-value", (body) => console.log(body));

    await getData("test-key", (body) => console.log(body));

    await listData((list) => console.log(list));
    
    await rmData("test-key", (body) => console.log(body));

    await listData((msg) => console.log(msg));
})();