JavaScript please

You will be provided a file path for input I, a file path for output O, a string S, and a string T. Read the contents of I, replacing each occurrence of S with T and write the resulting information to file O. You should replace O if it already exists.

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// Load the file system library

var fs = require('fs')

// Command line

var I= process.argv[2]

// input path

var O= process.argv[3]

// output path

var S= process.argv[4]

// String S

var T= process.argv[5]

// String T

// Your code goes here