function Tree(data, {
path,
id = Array.isArray(data) ? d => d.id : null,
parentId = Array.isArray(data) ? d => d.parentId : null,
children,
tree = d3.tree,
sort,
label,
title,
link,
linkTarget = "_blank",
width = 640,
height,
r = 3,
padding = 1,
fill = "#999",
fillOpacity,
stroke = "#555",
strokeWidth = 1.5,
strokeOpacity = 0.4,
strokeLinejoin,
strokeLinecap,
halo = "#fff",
haloWidth = 3,
curve = d3.curveBumpX,
} = {}) {
const root = path != null ? d3.stratify().path(path)(data)
: id != null || parentId != null ? d3.stratify().id(id).parentId(parentId)(data)
: d3.hierarchy(data, children);
if (sort != null) root.sort(sort);
const descendants = root.descendants();
const L = label == null ? null : descendants.map(d => label(d.data, d));
const dx = 10;
const dy = width / (root.height + padding);
tree().nodeSize([dx, dy])(root);
let x0 = Infinity;
let x1 = -x0;
root.each(d => {
if (d.x > x1) x1 = d.x;
if (d.x < x0) x0 = d.x;
});
if (height === undefined) height = x1 - x0 + dx * 2;
if (typeof curve !== "function") throw new Error(`Unsupported curve`);
const svg = d3.create("svg")
.attr("viewBox", [-dy * padding / 2, x0 - dx, width, height])
.attr("width", width)
.attr("height", height)
.attr("style", "max-width: 100%; height: auto; height: intrinsic;")
.attr("font-family", "sans-serif")
.attr("font-size", 10);
svg.append("g")
.attr("fill", "none")
.attr("stroke", stroke)
.attr("stroke-opacity", strokeOpacity)
.attr("stroke-linecap", strokeLinecap)
.attr("stroke-linejoin", strokeLinejoin)
.attr("stroke-width", strokeWidth)
.selectAll("path")
.data(root.links())
.join("path")
.attr("d", d3.link(curve)
.x(d => d.y)
.y(d => d.x));
const node = svg.append("g")
.selectAll("a")
.data(root.descendants())
.join("a")
.attr("xlink:href", link == null ? null : d => link(d.data, d))
.attr("target", link == null ? null : linkTarget)
.attr("transform", d => `translate(${d.y},${d.x})`);
node.append("circle")
.attr("fill", d => d.children ? stroke : fill)
.attr("r", r);
if (title != null) node.append("title")
.text(d => title(d.data, d));
if (L) node.append("text")
.attr("dy", "0.32em")
.attr("x", d => d.children ? -6 : 6)
.attr("text-anchor", d => d.children ? "end" : "start")
.attr("paint-order", "stroke")
.attr("stroke", halo)
.attr("stroke-width", haloWidth)
.text((d, i) => L[i]);
return svg.node();
}