[Bug]: Admin extensions target environment

[aurelienbobenrieth]

Please confirm that you have:

• [X] Searched existing issues to see if your issue is a duplicate. (If you’ve found a duplicate issue, feel free to add additional information in a comment on it.)
• [X] Reproduced the issue in the latest CLI version.

In which of these areas are you experiencing a problem?

Extension

Expected behavior

When developing extensions (admin extensions in this case) I am using React + Typescript.

I am using @effect to improve my DX + code quality. @effect/schema` is using Big integer literals.

However I cannot dev nor deploy the extension because admin extensions are targetting es2015 environment.

I have many questions:

• First things first, am I missing something ?
• Why is it that such a recent feature is targetting such an outdated environment ?
• Is it something related to Shopify CLI or to Remote UI ?
• Is there anyway we can expect in the future a bump or to actually be able to specify our desired target environment ?

Actual behavior

The bundle fails preventing me from using @effect/schema.

Verbose output

X [ERROR] Big integer literals are not available in the configured target environment ("es2015")

Reproduction steps

1. Add native Big Integer to your admin extension without polyfill.
2. Try to dev or deploy

Operating System

Windows 11

Shopify CLI version (check your project's package.json if you're not sure)

3.63.1

Shell

No response

Node version (run node -v if you're not sure)

v22.3.0

What language and version are you using in your application?

Node v22.3.0, Typescript 5.5.2