Problems installing sitemap - reactjs

Question

i'm trying to install react-router-sitemap in my application but when i run the command "node sitemap-generator.js" (after the configuration) this message on my console came out:
internal/modules/cjs/loader.js:960
throw err;
^
Error: Cannot find module '/home/ricardo/xxxx/sitemap-generator.js'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:957:15)
at Function.Module._load (internal/modules/cjs/loader.js:840:27)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
at internal/main/run_main_module.js:18:47 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}
in the installation i've created a file called "sitemap-builder.js" (within src):
require('babel-register');
const router = require('../src/router/routes').default;
const Sitemap = require('./').default;
function generateSitemap() {
return (
new Sitemap(router())
.build("https://www.web.com")
//Save it wherever you want
.save("../public/sitemap.xml")
);
}
generateSitemap();