Currently an error will show in console (like 401 Unauthorized) but it will continue with seeding. This can be a problem when assets are seeding - as it refers to past seeded items. You can just get an error "undefined index" in this case which looks pretty average.

We should just cancel with failed seeding if there's an error.

This issue is a continuation of chec/commercejs-nextjs-demo-store#169.

When I try to seed two products that are associated with an existing category id as follows:

[
  {
    "product": {
      "name": "Eyebrow Wax",
      "description": "",
      "price": "15.00"
    },
    "categories": [
      {
        "id": "cat_G6kVw73gdw2eDx",
        "slug": "treatments-facial-wax-tint",
        "name": "Facial Treatments (Wax & Tint)"
      }
    ]
  },
  {
    "product": {
      "name": "Arms Wax",
      "description": "Waxing treatment of an arm region include after wax treatment and hot towelling"
    },
    "categories": [
      {
        "id": "cat_G6kVw73gdw2eDx",
        "slug": "treatments-facial-wax-tint",
        "name": "Facial Treatments (Wax & Tint)"
      }
    ],
    "variant": [
      {
        "name": "Size",
        "options": [
          {
            "description": "200ml",
            "price": "0.00"
          },
          {
            "description": "500ml",
            "price": "34.00"
          }
        ]
      }
  }
]

When I run yarn seed it successfully seeds the 1st product named "Eyebrow Wax" (because it doesn't use the "variant" property), but it fails to seed the 2nd product named "Arms Wax" and generates error Could not push an object to the products endpoint (Response code 422 (Unprocessable Entity)):

If the "variant" property is removed, then it gets seeded correctly and associated with correctly with the category id, so the error is due to that "varant" property.

And that error code is mentioned here https://commercejs.com/docs/api/#responses-amp-errors as being 422 - Validation | Validation error. Data submitted was missing something, or in the wrong format.

However, the format I've used for the "variant" property is exactly the same as is used in the template code here:
https://github.com/chec/commercejs-nextjs-demo-store/blob/master/seeds/products.json#L9

Some users are reporting that the seeder is throwing a 404 error when seeding through the CLI.

In order to seed products with digital delivery we'll need to be able to associate assets to a product's digital delivery record. We do this already for product assets, but this would need similar handling.

I'm seeding 6 products and 6 images. I don't get any status updates during that time, it'd be nice if it could do something like "Seeding product 0...", "Seeding product 1..." etc (index is from JSON) so you know where it's up to

To seed a product with shipping rates, you must know the zone ID and base rate ID. We'll need to seed these before we can seed the products, or get them from the merchant somehow during the process.

So people know what they're in for. Locally (on Docker) it takes 2 minutes to seed 6 products with images.