v2.17.1 (2026-07-01)

Overview

Vite Horizon 2.17.1 is a maintenance release: it adds a helpful submit-time check to the new Visibility Surface Analysis tool, speeds up repeat page loads through improved caching, and refreshes the underlying build and mapping dependencies. There are no changes to existing workflows.

Breaking Changes

None in this release.

New Features and Improvements

Visibility Surface Analysis — "observer in extent" check

Before submitting a Visibility Surface Analysis job, the tool now checks that your drawn extent actually overlaps the selected observer set. If it doesn't (for example, you selected one set but drew the box over another set's points), it shows a "No Observers In Extent" message and doesn't submit — saving you from waiting on a job that would return a blank result. Redraw the extent over the correct set, or select the set that matches your box.

See the Visibility Surface Analysis guide.

Faster repeat loads

The production hosting configuration now sends caching instructions to your browser, so returning to Horizon reuses files already downloaded instead of fetching the heavy mapping libraries again on every visit. First-time loads are unchanged; repeat visits are noticeably quicker. Configuration files are intentionally left uncached so operational updates take effect immediately.

Under the Hood

• The ArcGIS Maps SDK and the Vite build toolchain were updated to their latest patch releases, verified with an automated boot check to ensure no regressions in the mapping components.
• Caching is applied conservatively: content-hashed application files are cached long-term (their names change when their content changes), while version-sensitive mapping assets are cached for a bounded period so an update can't pair mismatched files.