JSFiddle - React, Tailwind, and code Playground

JavaScript

var w = 560,
    h = 500,
    r = 230,
    color = d3.scale.category20c();

var partition = d3.layout.partition()
    .size([2 * Math.PI, r])
    .value(function (d) {
        return d.size;
    });

var arc = d3.svg.arc()
    .startAngle(function (d) {
        return d.x;
    })
    .endAngle(function (d) {
        return d.x + d.dx;
    })
    .innerRadius(function (d) {
        return d.y;
    })
    .outerRadius(function (d) {
        return d.y + d.dy;
    });

var svg = d3.select("body").append("svg:svg")
    .attr("width", w)
    .attr("height", h)
    .append("svg:g")
    .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")");

group = svg.data([getData()])
    .selectAll("path")
    .data(partition.nodes)
   .enter()
    .append('svg:g');

path = group.append("svg:path")
    .attr("d", arc)
    .style("fill", function (d) {
        if (d.children)
            return color(d.name)
        else
            return "grey"
    })
    .attr("display", function (d) {
        return d.depth ? null : "none";
    }) // hide inner
    .each(stash);

group.append("svg:text")
    .attr("transform", function (d) {
        return "rotate(" +
            (d.x + d.dx / 2 - Math.PI / 2) / Math.PI * 180 + ")";
    })
    .attr("x", function (d) {
        return d.y;
    })
    .attr("dx", "6") // margin
    .attr("dy", ".35em") // vertical-align
    .attr("display", function (d) {
        return d.depth ? null : "none";
    }) // hide inner
    .text(function (d) {
        return d.name;
    });

// Stash the old values for transition.
function stash(d) {
    d.x0 = d.x;
    d.dx0 = d.dx;
}

function getData2() {
    return {
        "name": "Total",
            "children": [{
            "name": "Enrolled in school:",
                "children": [{
                "name": "Enrolled in nursery school, preschool",
                "size": 86
            }, {
                "name": "Enrolled in kindergarten",
                "size": 100
            }, {
               ...