shopify_product_import.js

var fs = require('fs');
var parse = require('csv-parse');
var _ = require('lodash');
var needle = require('needle');

// First you need to create a private app in shopify.
// From this - you'll get a load of secret stuff, an API key and a password
var shopname = 'foo'; // eg: foo.myshopify.com
var secretStuff = 'API-KEY-GOES-HERE:PASSWORD-GOES-IN-HERE';

var parser = parse({
  delimiter: ','
}, function(err, data) {
  var i = 0;
  _.forEach(data, function(n) {
    i++;
    // Timeout to delay our api calls to Shopify.
    // because if we fire everything at once, 
    // shopify will tell us to sod off.
    setTimeout(function() {
      // In this example, we build a product object, and
      // populate it with data from our csv array.
      // Where bits are missing, we fill in
      // with placeholders... 'Please Edit' etc...
      var product = {
        "product": {
          "title": !!n[3] ? n[3] : 'Please add',
          "body_html": !!n[4] ? n[4] : 'Please Edit',
          "vendor": !!n[0] ? n[0] : 'Unknown',
          "product_type": !!n[2] ? n[2] : 'Unknown',
          "published": true
        }
      }
      // Then use needle to send our product up to Shopify
      needle.post('https://' + secretStuff + '@' + shopname + '.myshopify.com/admin/products.json', product, function(err, resp) {
        // you can pass params as a string or as an object.
        if (err) {
          console.log('Error', err)
        }
        // If you want, you can do something with the respose (returned by Shopify) here
      });
    }, 1500 * i)
  });
});

// Read data from CSV file... parse data
fs.createReadStream(__dirname + '/file.csv').pipe(parser);

A node.js script to import products into Shopify (could also be adapted for other interactions with Shopify's api). You'll need to npm install csv-parse, lodash and needle. The comments explain it all. Run from the terminal: node shopify_product_import.js