Error: ENOENT: no such file or directory, open 'file.json'

Question

i am trying to edit a JSON file in the same dir but i keep getting this error: i tried npm install -g , --save module_name and npm install express

Error: ENOENT: no such file or directory, open 'file.json'

const filename = `file.json`;
const fs = require('fs');

let config = JSON.parse(fs.readFileSync(filename, {encoding: 'utf8'}));

// do your stuff

fs.writeSync(filename, JSON.stringify(config), {encoding: 'utf8'});