Index: node_modules/d3-shape/src/order/appearance.js
===================================================================
--- node_modules/d3-shape/src/order/appearance.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/order/appearance.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,12 @@
+import none from "./none.js";
+
+export default function(series) {
+  var peaks = series.map(peak);
+  return none(series).sort(function(a, b) { return peaks[a] - peaks[b]; });
+}
+
+function peak(series) {
+  var i = -1, j = 0, n = series.length, vi, vj = -Infinity;
+  while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i;
+  return j;
+}
Index: node_modules/d3-shape/src/order/ascending.js
===================================================================
--- node_modules/d3-shape/src/order/ascending.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/order/ascending.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,12 @@
+import none from "./none.js";
+
+export default function(series) {
+  var sums = series.map(sum);
+  return none(series).sort(function(a, b) { return sums[a] - sums[b]; });
+}
+
+export function sum(series) {
+  var s = 0, i = -1, n = series.length, v;
+  while (++i < n) if (v = +series[i][1]) s += v;
+  return s;
+}
Index: node_modules/d3-shape/src/order/descending.js
===================================================================
--- node_modules/d3-shape/src/order/descending.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/order/descending.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,5 @@
+import ascending from "./ascending.js";
+
+export default function(series) {
+  return ascending(series).reverse();
+}
Index: node_modules/d3-shape/src/order/insideOut.js
===================================================================
--- node_modules/d3-shape/src/order/insideOut.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/order/insideOut.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,27 @@
+import appearance from "./appearance.js";
+import {sum} from "./ascending.js";
+
+export default function(series) {
+  var n = series.length,
+      i,
+      j,
+      sums = series.map(sum),
+      order = appearance(series),
+      top = 0,
+      bottom = 0,
+      tops = [],
+      bottoms = [];
+
+  for (i = 0; i < n; ++i) {
+    j = order[i];
+    if (top < bottom) {
+      top += sums[j];
+      tops.push(j);
+    } else {
+      bottom += sums[j];
+      bottoms.push(j);
+    }
+  }
+
+  return bottoms.reverse().concat(tops);
+}
Index: node_modules/d3-shape/src/order/none.js
===================================================================
--- node_modules/d3-shape/src/order/none.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/order/none.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,5 @@
+export default function(series) {
+  var n = series.length, o = new Array(n);
+  while (--n >= 0) o[n] = n;
+  return o;
+}
Index: node_modules/d3-shape/src/order/reverse.js
===================================================================
--- node_modules/d3-shape/src/order/reverse.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/order/reverse.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,5 @@
+import none from "./none.js";
+
+export default function(series) {
+  return none(series).reverse();
+}