layerchart-svelte5

Original：🇺🇸 English

Translated

LayerChart Svelte 5 patterns. Use for chart components with tooltip snippets, Chart context access, and all Svelte 5 snippet patterns for tooltips, gradients, highlights, and axes.

2installs

Sourcespences10/svelte-skills-kit

Added on2026-02-04

NPX Install

npx skill4agent add spences10/svelte-skills-kit layerchart-svelte5

SKILL.md Content

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LayerChart Svelte 5

Docs: next.layerchart.com (NOT layerchart.com - that's Svelte 4)

Install

bash

npm i layerchart@next d3-scale

CRITICAL: Use

@next

tag. Stable (1.x) is Svelte 4 only.

Quick Start

svelte

<Chart {data} x="date" y="value" tooltip={{ mode: 'bisect-x' }}>
	<Svg><Area class="fill-primary/20" /><Highlight points /></Svg>
	<Tooltip.Root>{#snippet children({ data })}{data.value}{/snippet}</Tooltip.Root>
</Chart>

Core Patterns

Tooltip:
```
{#snippet children({ data })}
```
- NOT
```
let:data
```
Chart context:
```
{#snippet children({ context })}
```
Gradient:
```
{#snippet children({ gradient })}
```
Enable tooltip:
```
tooltip={{ mode: 'band' | 'bisect-x' }}
```

Type data:

{#snippet children({ data }: { data: MyType })}

Tooltip Modes

Mode	Use Case
`band`	Bar charts (scaleBand)
`bisect-x`	Time-series area/line
`quadtree-x`	Area (nearest x)
`quadtree`	Scatter plots

References

full-patterns.md - Area, Bar, Pie, Calendar
tooltip-modes.md - All modes
graph-patterns.md - ForceGraph, zoom/pan