write a javascript object to a file in node

Thanks Stephan Bijzitter for the link

My problem can be solved like so:

var fs = require('fs')
var util = require('util')
var obj = {a: 1, b: 2}

fs.writeFileSync('./temp.js', 'var obj = ' + util.inspect(obj) , 'utf-8')

This writes a file containing: var obj = { a: 1, b: 2 }

Its because of arguments that writeFile requires.

https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback

It wants data to be <String> | <Buffer> | <Uint8Array>

So your first example works because it's a string.

In order to make second work just use JSON.stringify(obj);

Like this

fs.writeFile('file.txt', JSON.stringify(obj), callback)

Hope this helps.

You need to stringify your object:

var obj = {a: 1, b: 2}

fs.writeFile('./temp.js', JSON.stringify(obj), function(err) {
  if(err) console.log(err)
})

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