Fix theme package trying to use default environment

[graygilmore]

WHY are these changes introduced?

• Closes [Bug]: shopify theme package error since Shopify CLI 3.81.0 #6033

The package command does not support an environment flag and would fail if a default environment was present in a users shopify.theme.toml because we try to load it automatically.

This adds an early return if we're using the default environment but the command doesn't support it.

➜  aurora-theme git:(main) shopify theme package
╭─ error ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│                                                                                                                                                                                           │
│  Nonexistent flag: --environment                                                                                                                                                          │
│  See more help with --help                                                                                                                                                                │
│                                                                                                                                                                                           │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

➜  aurora-theme git:(main) npm i -g @shopify/cli@0.0.0-snapshot-20250702233241 --@shopify:registry=https://registry.npmjs.org
➜  aurora-theme git:(main) shopify theme package
╭─ success ─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│                                                                                                                                                                                           │
│  Your local theme was packaged in Dawn-15.1.0.zip                                                                                                                                         │
│                                                                                                                                                                                           │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	78.37% (+0.02% 🔼)	12576/16047
🟡	Branches	72.53% (+0.05% 🔼)	6127/8447
🟡	Functions	78.49% (+0.01% 🔼)	3281/4180
🟡	Lines	78.81% (+0.02% 🔼)	11900/15100

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / info.ts	81.44%	61.19% (-1.49% 🔻)	90.32%	83.15%

Test suite run success

2917 tests passing in 1263 suites.

Report generated by 🧪jest coverage report action from c3c5249

[graygilmore]

/snapit

[github-actions]

🫰✨ Thanks @graygilmore! Your snapshot has been published to npm.

Test the snapshot by installing your package globally:

pnpm i -g @shopify/cli@0.0.0-snapshot-20250702233241

Tip

If you get an ETARGET error, install it with NPM and the flag --@shopify:registry=https://registry.npmjs.org

Caution

After installing, validate the version by running just shopify in your terminal.
If the versions don't match, you might have multiple global instances installed.
Use which shopify to find out which one you are running and uninstall it.

[EvilGenius13]

Thanks @graygilmore!