Move Minimum Node Version to 18

[vlucas]

Description

Ensure that the minimum Node version is 18. This ensures that globals like fetch, formData, etc. are always available.

Node 18 - New globally available browser-compatible APIs

Additional context

Also updated starter templates

[vlucas]

Looks like we need to poke the Oxygen team to upgrade Node:

error [email protected]: The engine “node” is incompatible with this module. Expected version “>=18". Got “16.16.0”

[frehner]

I think Stackblitz may also only be on 16?

[vlucas]

@frehner That's a good point on StackBlitz. We need to ensure they support Node 18 before we can push this out and then drop all our polyfills.

[vlucas]

I left a comment on the StackBlitz issue for custom Node versions. We will see what they say or do.

[shopify[bot]]

Oxygen deployed a preview of your bl-fix-xss2 branch. Details:

Storefront	Status	Preview link	Deployment details	Last update (UTC)
third-party-queries-caching	⏳ In progress (Logs)	-	Inspect deployment	March 14, 2024 5:14 PM
optimistic-cart-ui	⏳ In progress (Logs)	-	Inspect deployment	March 14, 2024 5:14 PM
skeleton	⏳ In progress (Logs)	-	Inspect deployment	March 14, 2024 5:14 PM
custom-cart-method	⏳ In progress (Logs)	-	Inspect deployment	March 14, 2024 5:14 PM
subscriptions	⏳ In progress (Logs)	-	Inspect deployment	March 14, 2024 5:14 PM
vite	✅ Successful (Logs)	Preview deployment	Inspect deployment	March 12, 2024 7:29 PM

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[github-actions[bot]]

We detected some changes in packages/*/package.json or packages/*/src, and there are no updates in the .changeset. If the changes are user-facing and should cause a version bump, run npm run changeset add to track your changes and include them in the next release CHANGELOG. If you are making simple updates to examples or documentation, you do not need to add a changeset.