hack.js

const fs = require('fs');

const { stat, statfs, statSync, statfsSync } = fs;

Object.assign(fs, {
  stat(){
    console.log('Running stat', arguments[0], new Error().stack);
    return stat.call(fs, ...[...arguments]);
  },
  statfs(){
    console.log('Running statfs', arguments[0], new Error().stack);
    return statfs.call(fs, ...[...arguments]);
  },
  statSync(){
    console.log('Running statSync', arguments[0], new Error().stack);
    return statSync.call(fs, ...[...arguments]);
  },
  statfsSync(){
    console.log('Running statfsSync', arguments[0], new Error().stack);
    return statfsSync.call(fs, ...[...arguments]);
  },
});

hack.sh

node -r hack.js