Releases (239)

Minor Changes

• feat(Axis): Add tickOcclusion to drop ticks whose labels would overlap, measured at the size they render (including rotation), with priority of 'end' (default), 'start', or 'start-end' to choose which survive (#909)

• feat(utils): Add rotate and multiline support to getTextRect, so a rotated or stacked <Text> can be measured for occlude without the caller reproducing <Text>'s pivot (#909)

Patch Changes

• fix(Area): Apply mask, filter, and clip-path to the line path as well as the fill (unless overrideden by line={{...}}) (#909)

• fix(Calendar): Adjust month labels after recent Text verticalAnchor improvements (#909)

• fix(Calendar): Size cells to fit monthPath, which can extend past the last cell when the range ends mid-month (#909)

• perf(Chart): Measure the container before building the subtree, so marks are only built once (#909)

• fix(downloadImage, downloadSvg): Inline stop-color/stop-opacity so gradients don't export as solid black (#909)

• fix(Chart): Return undefined from xGet/yGet when that axis has no accessor, instead of throwing accessor is not a function (#909)

• fix(Spline, Area): Animate each path when the mark is split by z, which motion previously skipped — segments split by a style function are still redrawn outright (#909)

• fix(Path, Spline): Render endContent without a draw transition (#909)

Patch Changes

• perf(Chart): Resolve a plain-key accessor (x="date") directly instead of re-parsing the path string (#906)

• fix(Chart): Treat an explicit but empty series array as authoritative, rather than deriving implicit series from marks (#906)

• perf(Chart): Keep the value domain off the mark registry, so mounting a chart no longer rebuilds its scales — and every path drawn from them — once per mark registered (#906)

• fix(Highlight): Fix crash highlighting c-grouped points over nested chart data (#906)

• fix(Highlight): Mark only the hovered row in quadtree / voronoi tooltips, rather than every row sharing its position (#906)

• feat(Chart): Take the color channel from a mark's own fill / stroke (<Circle fill="island">) when no c is declared (#906)

• fix(Tooltip): Center on internal when data snapping (instead of on its leading edge) (#906)

• fix(Tooltip): Fix persistent tooltip when rendered outside Chart container and pointerEvents is enabled (#906)

Minor Changes

• feat(ChartGroup): Add <ChartGroup> and ChartGroupState to synchronize the tooltip/highlight, brush selection, zoom domain, and series highlight/visibility across charts (#901)

• feat(Chart): Add fx / fy faceting, drawing the chart once per distinct value into a grid of panels that share the position scales (#901)

• feat(Chart): Add seriesLayout="auto" (default) with automatic stacking when applicable (ex. Area, Bars). Can still pass explicit seriesLayout (ex. overlap, group, stack) when needed (#901)

• feat(Bar|Bars): Accept a per-row accessor for fillOpacity, strokeWidth, and opacity, matching Rect and Circle (#901)

• feat(Spline|Area): Resolve stroke, fill, opacity, and class per line/area (and segment). A string naming a data property now resolves through the chart's color scale, like other primitives (ex. Circle) (#901)

• feat(Chart): Default the color scale to the colors declared on series, so marks match their legend swatch (#901)

• feat(Legend): Support ordinal c scale similar to series including highlight and filter capability. An ordinal scale now draws labelled swatches rather than a color ramp — pass variant="ramp" for the old appearance (#901)

• feat(Tooltip): Add tooltip.show({ point, value, data }) to control tooltip programmatically (buttons, keyboard events, etc.) (#901)

• feat: New Brush component to manually position, useful for multiple / independent brushes (ex. parallel coordinates). Also includes new brushable attachment and brushGesture handler for even more granular control of BrushState (#901)

• feat(AnnotationPoint|AnnotationLine|AnnotationRange): Support seriesKey prop to associate an annotation with a series, positioning points and lines on its stacked segment (#901)

• feat(Chart): Add id prop, applied to the root element and identifying the chart within a ChartGroup (#901)

• feat(Rect): Support ref in html layers and forward pointerdown in canvas layers (#901)

• feat(Spline|Area): Add z accessor to draw one line/area per distinct value, defaulting to stroke / fill / c (#901)

• feat(Spline): Support seriesKey prop to follow that series' stacked top (#901)

• feat(Chart): Add transform.initialDomain to open a chart zoomed to a range (#901)

Patch Changes

• fix(BrushContext): Fix clearing on double-clicking the selection (root select-all was immediately undoing) (#901)

• fix(PieChart): Stop drawing a cartesian grid behind the arcs when using series (#901)

• fix(Chart): Stack each x1 sub-band separately, so grouped-and-stacked bars no longer share one running total (#901)

• fix(Chart): Apply zoomToBrush() when called before the chart mounts or when the scale clamps to scaleExtent (#901)

Minor Changes

• feat(TransformContext): Add two-finger pinch-to-zoom (and pan) support on touch devices, along with a new pinch option to disable it (#898)

Patch Changes

• fix(Axis): Support UTC scales (xScale={scaleUtc()}) by filtering and formatting ticks on the same boundaries as the scale (#899)

Patch Changes

• fix(Spline): Only tween path data when motion is set (~20x less memory growth while streaming, issue #585) (#896)

• perf(Chart): Remove quadratic domain recalculation on mount for series-based charts (#896)

• perf: Memoize props in component state classes (~3x faster <Rect> mount in benchmarks) (#896)

• perf(Chart): Resolve stacked value domain in a single pass (#896)

Minor Changes

• feat(Labels): Add layout="voronoi" to place each label towards Voronoi cell's centroid, occlude to drop overlapping labels and links to move labels to centroid with a leader line back to the point. (#892)

• feat(Points|Labels): Project through the chart's geo projection when present, so <Points> (and <Labels>) render on maps. (#892)

• feat(Voronoi): Add children snippet exposing per-cell geometry (point, polygon, centroid, area) for custom rendering (e.g. labels). (#892)

• feat(AnnotationPoint): Support explicit labelX/labelY positioning, a fontSize prop, a labelGap for callout spacing, and a labelPlacement="smart" option that auto-orients the label and terminates its callout at the label edge. (#892)

• feat(GeoState): Support clipExtent: true to clip the projection to the chart dimensions ([[0, 0], [width, height]]), e.g. to trim the Sphere overflow under geoMercator. (#892)

Patch Changes

• fix(Text|Labels): Anchor verticalAnchor by cap-height so text sits a consistent distance from marks and aligns across the Svg, Canvas, and Html layers. placement="smart" labels now clear the point marker on all sides. (#893)

Patch Changes

• feat: Support Skeleton 5 (skeleton-5.css) (#890)

• feat(skeleton): Resolve surface colors via light-dark() so the Skeleton presets follow color-scheme (html.dark toggle, or prefers-color-scheme when unpinned), and fix the surface scale collapsing to a single shade — surfaces now graduate from 100 (lightest) to 300 (darkest) in both light and dark (#890)

• fix(Tooltip): Theme portaled tooltips in the style presets so surface colors resolve correctly (e.g. fixes a light tooltip in dark mode with Skeleton) (#890)

Patch Changes

• fix(Chart): Guard against context.brush being null before BrushContext loads (e2baf3e)

• fix(Tooltip): Hide tooltip on pointercancel so it does not persist when a touch becomes a scroll on mobile (d08fd3a)

Patch Changes

• fix(Chart): Fix chart rendering blank when brush and transform are combined under Svelte's experimental async mode by lazy-loading interaction contexts via $effect/{#if} instead of nested {#await import()}. (#885)

Patch Changes

• fix(styles): Declare CSS cascade layer order so components reliably wins over base in production builds. Non-Tailwind consumers can @import 'layerchart/core.css' (included by framework presets). (#883)

• fix(styles): Normalize mistyped @layer component → @layer components in Tooltip and Layer components. (#883)