Index: node_modules/d3-hierarchy/src/pack/index.js
===================================================================
--- node_modules/d3-hierarchy/src/pack/index.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-hierarchy/src/pack/index.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,81 @@
+import {optional} from "../accessors.js";
+import constant, {constantZero} from "../constant.js";
+import lcg from "../lcg.js";
+import {packSiblingsRandom} from "./siblings.js";
+
+function defaultRadius(d) {
+  return Math.sqrt(d.value);
+}
+
+export default function() {
+  var radius = null,
+      dx = 1,
+      dy = 1,
+      padding = constantZero;
+
+  function pack(root) {
+    const random = lcg();
+    root.x = dx / 2, root.y = dy / 2;
+    if (radius) {
+      root.eachBefore(radiusLeaf(radius))
+          .eachAfter(packChildrenRandom(padding, 0.5, random))
+          .eachBefore(translateChild(1));
+    } else {
+      root.eachBefore(radiusLeaf(defaultRadius))
+          .eachAfter(packChildrenRandom(constantZero, 1, random))
+          .eachAfter(packChildrenRandom(padding, root.r / Math.min(dx, dy), random))
+          .eachBefore(translateChild(Math.min(dx, dy) / (2 * root.r)));
+    }
+    return root;
+  }
+
+  pack.radius = function(x) {
+    return arguments.length ? (radius = optional(x), pack) : radius;
+  };
+
+  pack.size = function(x) {
+    return arguments.length ? (dx = +x[0], dy = +x[1], pack) : [dx, dy];
+  };
+
+  pack.padding = function(x) {
+    return arguments.length ? (padding = typeof x === "function" ? x : constant(+x), pack) : padding;
+  };
+
+  return pack;
+}
+
+function radiusLeaf(radius) {
+  return function(node) {
+    if (!node.children) {
+      node.r = Math.max(0, +radius(node) || 0);
+    }
+  };
+}
+
+function packChildrenRandom(padding, k, random) {
+  return function(node) {
+    if (children = node.children) {
+      var children,
+          i,
+          n = children.length,
+          r = padding(node) * k || 0,
+          e;
+
+      if (r) for (i = 0; i < n; ++i) children[i].r += r;
+      e = packSiblingsRandom(children, random);
+      if (r) for (i = 0; i < n; ++i) children[i].r -= r;
+      node.r = e + r;
+    }
+  };
+}
+
+function translateChild(k) {
+  return function(node) {
+    var parent = node.parent;
+    node.r *= k;
+    if (parent) {
+      node.x = parent.x + k * node.x;
+      node.y = parent.y + k * node.y;
+    }
+  };
+}