1'use strict'
2
3const fs = require('fs');
4
5let fileContent = 'I can write';
6fs.writeFileSync('message.txt', fileContent);1<script> 
2// Requiring fs module in which 
3// writeFile function is defined. 
4const fs = require('fs') 
5  
6// Data which will write in a file. 
7let data = "Learning how to write in a file."
8  
9// Write data in 'Output.txt' . 
10fs.writeFile('Output.txt', data, (err) => { 
11      
12    // In case of a error throw err. 
13    if (err) throw err; 
14}) 
15</script>