File IO inside CasperJS

Question

Is it possible do read/write files inside a CasperJS Script ?

var fs = require('fs');
var data = fs.readFileSync('testdata.data', 'utf-8');
console.log(data);

Calling casperjs fileio.jsreturns:

'undefined' is not a function

Even after running npm install fs.

Bonus point if not : explain why ?

score 58 · Accepted Answer · edited Aug 25 '14 at 13:58

58

CasperJS does not make use of NodeJS' fs module. Instead, it uses that of PhantomJS

Here's a short example of how to use PhantomJS' filesystem module:

var fs = require('fs');
var utils = require('utils');
var data = fs.read('testdata.dat');
utils.dump(data);

edited Aug 25 '14 at 13:58

Artjom B.

answered Mar 07 '13 at 23:06

hexid

9

Found this answer after hours of frustration - Doh! Anyone know why they use separate node modules or couldn't have consistent naming for the few functions they have? It seems very very counter-intuitive and has caused other developers much frustration as well. – Zaheer Dec 30 '13 at 05:42
@Zaheer Casperjs is a Qt implementation, not a nodejs library or similar, so they had to reinvent the wheel – Purefan Sep 20 '17 at 11:16

1 Answers1