Use case:

<project root>
|- src
|- mock.config.js
|- mocks
    |- mock1.js
    |- mock2.js
    |- mock3.js

const mockServer = require("pro-mock");

const endPoints = mockServer.getEndPoint();

module.exports = {
  env: {
    ...endPoints,
  },
  // ... other configs
};

Custom Next Laucher

const nextConfig = require("./next.config.js");
const MockServer = require("pro-mock");
const nextLauncher = require("pro-mock/next-launcher");

nextLauncher(new MockServer(), nextConfig);