How to pass STDIN to node.js child process

Question

I\'m using a library that wraps pandoc for node. But I can\'t figure out how to pass STDIN to the child process `execFile...

var execFile = requ         


        

Answer 1

Here's how I got it to work:

var cp = require('child_process');
var optipng = require('pandoc-bin').path; //This is a path to a command
var child = cp.spawn(optipng, ['--from=markdown', '--to=html']); //the array is the arguments

child.stdin.write('# HELLO'); //my command takes a markdown string...

child.stdout.on('data', function (data) {
    console.log('stdout: ' + data);
});
child.stdin.end();