eas_webadmin/build/plugins/mock.ts

import { viteMockServe } from 'vite-plugin-mock';

export default (viteEnv: ImportMetaEnv) => {
  const prodMock = viteEnv.VITE_PROD_MOCK === 'Y';

  return viteMockServe({
    mockPath: 'mock',
    prodEnabled: prodMock,
    injectCode: `
			import { setupMockServer } from '../mock';
			setupMockServer();
		`
  });
};