npm install next-hsuc --save-dev

// cross-env needs to be installed first, npm install cross-env --save-dev

"dev": "cross-env PORT=80 PROXY=true node server.js",
"build": "cross-env NODE_ENV=production next build",
"start": "cross-env NODE_ENV=production PORT=80 PROXY=true node server.js"

const express = require(`express`);
const next = require(`next`);
const { NODE_ENV, PORT=3000, PROXY } = process.env;
const app = next({dir: `.`, dev: NODE_ENV !== "production"});

app.prepare()
  .then(() => {
    const server = express();

    server.listen(PORT, (err) => {
      if (err) {
        throw err
      }
      console.log(`> Ready on port ${PORT} [${NODE_ENV}]`);
    })
  })
  .catch((ex) => {
    console.log(`An error occurred, unable to start the server`)
    console.log(ex)
  });

// webpack.config.js
const withPlugins = require ("next-compose-plugins");
const {PHASE_DEVELOPMENT_SERVER} = require(`next-server/constants`);
const Hsuc = require(`hsuc`);
const HsucOptions = {
    cloudFolder: "<Cloud folder>",
    domain: "<domain name>",
    enable: true,
    // Alicloud (Choose one)
    aliyun: {
      region: "<OSS region>",
      accessKeyId: "<Your accessKeyId>",
      accessKeySecret: "<Your accessKeySecret>",
      bucket: "<Your bucket name>"
    }
    // Hua Weiyun (Choose one)
    huawei: {
      accessKeyId: "<Provide your Access Key>",
      secretAccessKey: "<Provide your Secret Key>",
      server: "<https://your-endpoint>",
      bucket: "<Bucket>"
    },
    // Tencent cloud (Choose one)
    tencent: {
      secretId: "<SecretId>",
      secretKey: "<SecretKey>",
      bucket: "<Bucket>",
      region: "<Region>"
    },
    // Qiniu cloud (Choose one)
    qiniu: {
      accessKey: "<ACCESS_KEY>",
      secretKey: "<SECRET_KEY>",
      bucket: "<Bucket>"
    },
    // Clapping clouds again (Choose one)
    upyun: {
      serviceName: "<service name>",
      operatorName: "<operator name>",
      operatorPassword: "<operator password>",
    }
}

const nextConfig = {
  webpack: (config, options) => {
    config.plugins.push(
      new Hsuc(Object.assign(HsucOptions, options))
    )

    return config;
  },
  distDir: "_next",
  ["!" + (HsucOptions.enable ? PHASE_DEVELOPMENT_SERVER : "")]: {
    assetPrefix: `${HsucOptions.domain}/${HsucOptions.cloudFolder}`,
  }
};

module.exports = withPlugins(
    [...], 
    nextConfig);
)