How to add global variables for Node.js standard modules?

To add global variables for Node.js standard modules, we export the variables.

For instance, we write

const common = {
  util: require("util"),
  fs: require("fs"),
  path: require("path"),
};

module.exports = common;

to export the common object by setting it as the value of module.exports in common.js.

Then we write

const common = require("./common.js");
console.log(common.util.inspect(common));

to call require to include the exports in common.js in our code.