Copy a folder and subfolders without all the `node_modules` folders within... tested with Node v9.10.1

copy-folders-exclude-node-modules.js

// yarn add fs-extra --dev
const fs = require("fs-extra");

console.log("*** start ***");

// replace ".src" with your own folder
fs
  .copy("./src", "./dist", {
    filter: path => {
      // console.log("path ===", path);
      // skip filter on files
      if (fs.lstatSync(path).isFile()) return true;
      // return false if path is directory and string contains node_modules
      return !(path.indexOf("node_modules") > -1);
    }
  })
  .then(() => {
    console.log("folder copied successfully!");
    console.log("*** end ***");
  });