Maplibre

Bug Fixes

- Fix bug causing [`mapbox-gl-rtl-text` plugin](https://github.com/mapbox/mapbox-gl-rtl-text) to not work [#4055](https://github.com/mapbox/mapbox-gl-js/pull/4055)

Deprecation Notices

- [Style classes](https://www.mapbox.com/mapbox-gl-style-spec/#layer-paint.*) are deprecated and will be removed in an upcoming release of Mapbox GL JS.

New Features

- Add `MapisSourceLoaded` method [4033](https://github.com/mapbox/mapbox-gl-js/pull/4033)
- Automatically reload tiles based on their `Expires` and `Cache-Control` HTTP headers [3944](https://github.com/mapbox/mapbox-gl-js/pull/3944)
- Add `around=center` option to `scrollZoom` and `touchZoomRotate` interaction handlers [3876](https://github.com/mapbox/mapbox-gl-js/pull/3876)
- Add support for [`mapbox-gl-rtl-text` plugin](https://github.com/mapbox/mapbox-gl-rtl-text) to support right-to-left scripts [#3758](https://github.com/mapbox/mapbox-gl-js/pull/3758)
- Add `canvas` source type [3765](https://github.com/mapbox/mapbox-gl-js/pull/3765)
- Add `MapisMoving` method [2792](https://github.com/mapbox/mapbox-gl-js/issues/2792)

Bug Fixes

- Fix bug causing garbled text on zoom [3962](https://github.com/mapbox/mapbox-gl-js/pull/3962)
- Fix bug causing crash in Firefox and Mobile Safari when rendering a large map [4037](https://github.com/mapbox/mapbox-gl-js/pull/4037)
- Fix bug causing raster tiles to flicker during zoom [2467](https://github.com/mapbox/mapbox-gl-js/issues/2467)
- Fix bug causing exception when unsetting and resetting fill-outline-color [3657](https://github.com/mapbox/mapbox-gl-js/issues/3657)
- Fix memory leak when removing raster sources [3951](https://github.com/mapbox/mapbox-gl-js/issues/3951)
- Fix bug causing exception when when zooming in / out on empty GeoJSON tile [3985](https://github.com/mapbox/mapbox-gl-js/pull/3985)
- Fix line join artifacts at very sharp angles [4008](https://github.com/mapbox/mapbox-gl-js/pull/4008)

New Features

- Add `renderWorldCopies` option to the `Map` constructor to give users control over whether multiple worlds are rendered in a map [3885](https://github.com/mapbox/mapbox-gl-js/pull/3885)

Bug Fixes

- Fix performance regression triggered when `Map` pitch or bearing is changed [3938](https://github.com/mapbox/mapbox-gl-js/pull/3938)
- Fix null pointer exception caused by trying to clear an `undefined` source [3903](https://github.com/mapbox/mapbox-gl-js/pull/3903)

Miscellaneous

- Incorporate integration tests formerly at [`mapbox-gl-test-suite`](https://github.com/mapbox/mapbox-gl-test-suite) into this repository [#3834](https://github.com/mapbox/mapbox-gl-js/pull/3834)

New Features

- Fire an error when map canvas is larger than allowed by `gl.MAX_RENDERBUFFER_SIZE` [2893](https://github.com/mapbox/mapbox-gl-js/issues/2893)
- Improve error messages when referencing a nonexistent layer id [2597](https://github.com/mapbox/mapbox-gl-js/issues/2597)
- Fire an error when layer uses a `geojson` source and specifies a `source-layer` [3896](https://github.com/mapbox/mapbox-gl-js/pull/3896)
- Add inline source declaration syntax [3857](https://github.com/mapbox/mapbox-gl-js/issues/3857)
- Improve line breaking behavior [3887](https://github.com/mapbox/mapbox-gl-js/issues/3887)

Performance Improvements

- Improve `MapsetStyle` performance in some cases [3853](https://github.com/mapbox/mapbox-gl-js/pull/3853)

Bug Fixes

- Fix unexpected popup positioning when some offsets are unspecified [3367](https://github.com/mapbox/mapbox-gl-js/issues/3367)
- Fix incorrect interpolation in functions [3838](https://github.com/mapbox/mapbox-gl-js/issues/3838)
- Fix incorrect opacity when multiple backgrounds are rendered [3819](https://github.com/mapbox/mapbox-gl-js/issues/3819)
- Fix exception thrown when instantiating geolocation control in Safari [3844](https://github.com/mapbox/mapbox-gl-js/issues/3844)
- Fix exception thrown when setting `showTileBoundaries` with no sources [3849](https://github.com/mapbox/mapbox-gl-js/issues/3849)
- Fix incorrect rendering of transparent parts of raster layers in some cases [3723](https://github.com/mapbox/mapbox-gl-js/issues/3723)
- Fix non-terminating render loop when zooming in in some cases [3399](https://github.com/mapbox/mapbox-gl-js/pull/3399)

New Features

- Add support for property functions for many style properties on line layers [3033](https://github.com/mapbox/mapbox-gl-js/pull/3033)
- Make `MapsetStyle` smoothly transition to the new style [3621](https://github.com/mapbox/mapbox-gl-js/pull/3621)
- Add `styledata`, `sourcedata`, `styledataloading`, and `sourcedataloading` events
- Add `isSourceLoaded` and `source` properties to `MapDataEvent` [3590](https://github.com/mapbox/mapbox-gl-js/pull/3590)
- Remove "max zoom" cap of 20 [3683](https://github.com/mapbox/mapbox-gl-js/pull/3683)
- Add `circle-stroke-*` style properties [3672](https://github.com/mapbox/mapbox-gl-js/pull/3672)
- Add a more helpful error message when the specified `container` element doesn't exist [3719](https://github.com/mapbox/mapbox-gl-js/pull/3719)
- Add `watchPosition` option to `GeolocateControl` [3739](https://github.com/mapbox/mapbox-gl-js/pull/3739)
- Add `positionOptions` option to `GeolocateControl` [3739](https://github.com/mapbox/mapbox-gl-js/pull/3739)
- Add `aria-label` to map canvas [3782](https://github.com/mapbox/mapbox-gl-js/pull/3782)
- Adjust multipoint symbol rendering behavior [3763](https://github.com/mapbox/mapbox-gl-js/pull/3763)
- Add support for property functions for `icon-offset` [3791](https://github.com/mapbox/mapbox-gl-js/pull/3791)
- Improved antialiasing on pitched lines [3790](https://github.com/mapbox/mapbox-gl-js/pull/3790)
- Allow attribution control to collapse to an ⓘ button on smaller screens [3783](https://github.com/mapbox/mapbox-gl-js/pull/3783)
- Improve line breaking algorithm [3743](https://github.com/mapbox/mapbox-gl-js/pull/3743)

Performance Improvements

- Fix memory leak when calling `MapremoveSource` [3602](https://github.com/mapbox/mapbox-gl-js/pull/3602)
- Reduce bundle size by adding custom build of `gl-matrix` [3734](https://github.com/mapbox/mapbox-gl-js/pull/3734)
- Improve performance of projection code [3721](https://github.com/mapbox/mapbox-gl-js/pull/3721)
- Improve performance of style function evaluation [3816](https://github.com/mapbox/mapbox-gl-js/pull/3816)

Bug fixes

- Fix exception thrown when using `line-color` property functions [3639](https://github.com/mapbox/mapbox-gl-js/issues/3639)
- Fix exception thrown when removing a layer and then adding another layer with the same id but different type [3655](https://github.com/mapbox/mapbox-gl-js/pull/3655)
- Fix exception thrown when passing a single point to `MapfitBounds` [3655](https://github.com/mapbox/mapbox-gl-js/pull/3655)
- Fix exception thrown occasionally during rapid map mutations [3681](https://github.com/mapbox/mapbox-gl-js/pull/3681)
- Fix rendering defects on pitch=0 on some systems [3740](https://github.com/mapbox/mapbox-gl-js/pull/3740)
- Fix unnecessary CPU usage when displaying a raster layer [3764](https://github.com/mapbox/mapbox-gl-js/pull/3764)
- Fix bug causing sprite after `MapsetStyle` [3829](https://github.com/mapbox/mapbox-gl-js/pull/3829)
- Fix bug preventing `Map` from emitting a `contextmenu` event on Windows browsers [3822](https://github.com/mapbox/mapbox-gl-js/pull/3822)

New features and improvements

- Performance improvements for `MapaddLayer` and `MapremoveLayer` [3584](https://github.com/mapbox/mapbox-gl-js/pull/3584)
- Add method for changing layer order at runtime - `MapmoveLayer` [3584](https://github.com/mapbox/mapbox-gl-js/pull/3584)
- Update vertical punctuation logic to Unicode 9.0 standard [3608](https://github.com/mapbox/mapbox-gl-js/pull/3608)

Bug fixes

- Fix data-driven `fill-opacity` rendering when using a `fill-pattern` [3598](https://github.com/mapbox/mapbox-gl-js/pull/3598)
- Fix line rendering artifacts [3627](https://github.com/mapbox/mapbox-gl-js/pull/3627)
- Fix incorrect rendering of opaque fills on top of transparent fills [2628](https://github.com/mapbox/mapbox-gl-js/pull/2628)
- Prevent `AssertionErrors` from pitching raster layers by only calling `WorkerredoPlacement` on vector and GeoJSON sources [3624](https://github.com/mapbox/mapbox-gl-js/pull/3624)
- Restore IE11 compatability [3635](https://github.com/mapbox/mapbox-gl-js/pull/3635)
- Fix symbol placement for cached tiles [3637](https://github.com/mapbox/mapbox-gl-js/pull/3637)