AS
const p = path.join(path.dirname(process.mainModule.filename) , 'data' , 'product.json')
fs.readFile(p, (err, dataContent) => {
let products= []
if (!err){
products = JSON.parse(dataContent)
}
products.push(this)
fs.writeFile(p, JSON.stringify(products), (err) => {
console.log(err)
})
})
}