Index: node_modules/d3-hierarchy/src/treemap/resquarify.js
===================================================================
--- node_modules/d3-hierarchy/src/treemap/resquarify.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-hierarchy/src/treemap/resquarify.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,36 @@
+import treemapDice from "./dice.js";
+import treemapSlice from "./slice.js";
+import {phi, squarifyRatio} from "./squarify.js";
+
+export default (function custom(ratio) {
+
+  function resquarify(parent, x0, y0, x1, y1) {
+    if ((rows = parent._squarify) && (rows.ratio === ratio)) {
+      var rows,
+          row,
+          nodes,
+          i,
+          j = -1,
+          n,
+          m = rows.length,
+          value = parent.value;
+
+      while (++j < m) {
+        row = rows[j], nodes = row.children;
+        for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value;
+        if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += (y1 - y0) * row.value / value : y1);
+        else treemapSlice(row, x0, y0, value ? x0 += (x1 - x0) * row.value / value : x1, y1);
+        value -= row.value;
+      }
+    } else {
+      parent._squarify = rows = squarifyRatio(ratio, parent, x0, y0, x1, y1);
+      rows.ratio = ratio;
+    }
+  }
+
+  resquarify.ratio = function(x) {
+    return custom((x = +x) > 1 ? x : 1);
+  };
+
+  return resquarify;
+})(phi);