Changelog

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All notable changes to this project are documented here. The format follows Keep a Changelog and this project adheres to Semantic Versioning.

0.1.0 - 2026-08-05

Added

  • <.map> function component: declarative map with center, zoom, markers.
  • Rover.Marker — normalises plain maps, structs and Ecto schemas into markers.
  • Rover.Geo — strict {lat, lon} handling, bounding boxes, distance.
  • Rover.Tiles — named tile presets (:osm, :carto_light, :carto_dark, …) plus arbitrary XYZ URLs.
  • JavaScript runtime bundling OpenLayers, exposed as the Rover LiveView hook, with keyed marker reconciliation (only changed features touch the map).
  • Events pushed back to LiveView: marker click, map click, move end, marker drag.
  • notebooks/rover.livemd — a Livebook that exercises each layer and renders a live map from Rover's own bundle.
  • GitHub Actions CI: Elixir 1.15–1.19, the Node test suite, and a check that the committed priv/static bundles match assets/js.

Fixed

  • mix dev now actually serves. Supervisor.start_link/2 links to the process that calls it — the one evaluating dev.exs. That process finished, the link took the endpoint down with it, and --no-halt kept the VM alive: the playground logged "Running ... at 127.0.0.1:4020" and then refused every connection.
  • listeners: [Phoenix.CodeReloader] added, which Phoenix 1.8 requires for code reloading; without it every request logged a warning and a stacktrace.
  • Any 404 in the playground — the browser asking for /favicon.ico was enough — raised in Phoenix's error handler, because no error view was configured. The playground now renders status pages, and the layout carries an inline favicon so the request is not made at all.
  • PORT=4021 mix dev runs the playground on another port.
  • The map no longer jumps to a world view when a marker moves. With no center, Rover derives one from the markers — a value that shifts whenever any marker does. The client read each shift as an instruction and animated to the derived centre at the derived zoom, landing on zoom 2 with no way back. The derived centre is now flagged and excluded from view-change detection.
  • A map given no center now always frames its markers once when it appears, even with fit={false} — previously that combination rendered the whole world.
  • setConfig re-applies controls and interactive. Toggling either after mount used to reach the client and do nothing.
  • interactive={false} now withholds the zoom, fullscreen and rotate controls and stops emitting click events, tooltips and cursor changes. Attribution and the scale line stay. Previously the +/- buttons still moved the view and clicks still pushed events.
  • on_move_end flags a bbox that straddles the antimeridian with "crosses_antimeridian" => true, instead of silently returning west > east to a viewport-query that then matches nothing.
  • A partial marker_fields mapping ([lat: :latitude]) no longer breaks reading the other axis from its usual key.
  • A marker dragged on the client is put back if the server does not accept the move; the stale geometry hash used to make the correcting payload look unchanged.
  • RoverMap supplies a default view instead of throwing when handed an incomplete config, which makes the malformed-payload fallback real.
  • The style cache is bounded, so volatile labels cannot accumulate styles for the lifetime of a long-lived LiveView session.
  • LICENSE is now the MIT text alone; the OpenLayers notice moved to NOTICE.md. Appending to LICENSE made licence scanners report "Other" instead of MIT.
  • <.map> no longer emits a trailing space in class when none was given.

Documented

  • Marker ids round-trip through JSON: integers and strings survive, atoms come back as strings and will not match.
  • fit governs refitting; the initial framing is separate.