@kieckhafer It looks like the correct way to emit this as is currently done in reaction admin is

appEvents.emit("afterVariantUpdate", { _id, field, value });

Where _id is the variant ID and it is called once per field that was changed.

I also noticed that in src/core-services/catalog/startup.js, it is looking for productId, which we never even emit, and using it as the variant ID (not product). BUT it actually just uses it to GET the product ID. So...

Can you?

• Change this to emit once per changed field (price and/or compareAtPrice)
• Emit with this signature: { _id: variantId, productId: updatedProduct.ancestors[0], variant: updatedProduct, field, value }
• Change the event consumer in src/core-services/catalog/startup.js to this:

appEvents.on("afterVariantUpdate", async ({ productId }) => {
    hashRelatedProduct(productId, collections).catch((error) => {
      Logger.error("Error in afterVariantUpdate", error);
    });
  });

@aldeed I think this takes care of it: 92a2966

Not sure if looping over the object like that is the best way to do it though.