Upgrade @11ty/is-land from v4 to v5

Remote

Remote worldwide

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Sources last verified: Sep 1, 2026, 6:06 PM
Originally published: Feb 21, 2026, 1:17 PM
Published sources: 1

Location: Not identified
Salary: Not identified
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Work model: Inferred

remoteintech/remote-jobs

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Summary

Dependabot opened PR #2120 to bump @11ty/is-land from 4.0.1 to 5.0.1. This is a major version bump with breaking changes, and the CI build is currently failing on that PR. Parking this as a tracked issue rather than merging blindly.

Breaking Changes in v5

autoinit attribute removed — <is-land autoinit> and is-land-autoinit.js are gone. Must migrate to the new Island.addInitType() API for framework initialisation
Island.define(tagName) removed — replaced by using customElements.define directly
import attribute behaviour change — when used with type, the import() is no longer performed automatically
Manual definition — now uses ?nodefine query param instead of the previous approach

What's Good

Broader browser support (Chrome 71+, down from 88+)
Performance improvements for on:idle, on:media, on:load
Passive event listeners for on:interaction (fixes Lighthouse warning)
Minified build available (dist/is-land.min.js)

Suggested Approach

Audit current is-land usage in templates (src/_includes/, src/_layouts/)
Check if autoinit or Island.define() are used anywhere
Update usage to match v5 API
Test lazy-loading behaviour (theme switcher, search, any other islands)
Verify build passes

References

Node.js