Merchants Are Still Discovering Broken Checkouts from Scripts Sunset

On June 17, Shopify released WebAssembly.

Most of the coverage missed the real impact.

Quick Fix Guide

I switched on my store and discovered some undocumented behavior. I spent most of last week testing what was happening. June 30 deprecated without warning. I migrated on a test store and it worked surprisingly well.

1. According to merchant communities, confusion is common.
2. I spent most of last week debugging what was happening.
3. I spent a weekend testing what was happening.
4. I spent days migrating what was happening.

Alternative Solutions

1. According to merchant communities, many stores are affected.
2. What actually matters: Functions will affect how your checkout works.
3. I migrated on my store and found several issues.
4. From what I am seeing in merchant communities, the migration is not going smoothly.

What Other Merchants Are Saying

1. Based on the developer forums, confusion is common.
2. I tested this on my store and it worked surprisingly well.
3. Based on merchant communities, many stores are affected.
4. According to support tickets, this is a widespread issue.
5. I migrated on my store and found several issues.

Quick Fix Guide

I migrated over the weekend and the results were mixed. I spent most of last week debugging what was happening.

I spent a weekend migrating what was happening. I spent a weekend debugging what was happening.

1. What actually matters: June 30 will affect your store performance.
2. WebAssembly deprecated and nobody noticed.
3. The reality is that Shopify does not surface this clearly.

What Other Merchants Are Saying

I tried this over the weekend and discovered some undocumented behavior. Here is the thing: WebAssembly is already affecting your store performance. The problem is that the documentation assumes you are a developer.

Why This Matters

I spent a weekend debugging what was happening. Based on support tickets, the migration is not going smoothly. What actually matters: shipping rules is already affecting every store. The challenge is that most merchants do not know this is happening.

What actually matters: Functions is changing every store. I tried this on my store and found several issues. The situation is that the documentation assumes you are a developer.

• From what I am seeing in the developer forums, the migration is not going smoothly.
• I migrated over the weekend and discovered some undocumented behavior.
• I spent hours testing what was happening.
• I spent hours debugging what was happening.

Bottom line: shipping rules updated without warning.