Index: node_modules/d3-shape/src/offset/diverging.js
===================================================================
--- node_modules/d3-shape/src/offset/diverging.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/offset/diverging.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,14 @@
+export default function(series, order) {
+  if (!((n = series.length) > 0)) return;
+  for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) {
+    for (yp = yn = 0, i = 0; i < n; ++i) {
+      if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) {
+        d[0] = yp, d[1] = yp += dy;
+      } else if (dy < 0) {
+        d[1] = yn, d[0] = yn += dy;
+      } else {
+        d[0] = 0, d[1] = dy;
+      }
+    }
+  }
+}
Index: node_modules/d3-shape/src/offset/expand.js
===================================================================
--- node_modules/d3-shape/src/offset/expand.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/offset/expand.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,10 @@
+import none from "./none.js";
+
+export default function(series, order) {
+  if (!((n = series.length) > 0)) return;
+  for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) {
+    for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0;
+    if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y;
+  }
+  none(series, order);
+}
Index: node_modules/d3-shape/src/offset/none.js
===================================================================
--- node_modules/d3-shape/src/offset/none.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/offset/none.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,9 @@
+export default function(series, order) {
+  if (!((n = series.length) > 1)) return;
+  for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) {
+    s0 = s1, s1 = series[order[i]];
+    for (j = 0; j < m; ++j) {
+      s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1];
+    }
+  }
+}
Index: node_modules/d3-shape/src/offset/silhouette.js
===================================================================
--- node_modules/d3-shape/src/offset/silhouette.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/offset/silhouette.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,10 @@
+import none from "./none.js";
+
+export default function(series, order) {
+  if (!((n = series.length) > 0)) return;
+  for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) {
+    for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0;
+    s0[j][1] += s0[j][0] = -y / 2;
+  }
+  none(series, order);
+}
Index: node_modules/d3-shape/src/offset/wiggle.js
===================================================================
--- node_modules/d3-shape/src/offset/wiggle.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/offset/wiggle.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,24 @@
+import none from "./none.js";
+
+export default function(series, order) {
+  if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return;
+  for (var y = 0, j = 1, s0, m, n; j < m; ++j) {
+    for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) {
+      var si = series[order[i]],
+          sij0 = si[j][1] || 0,
+          sij1 = si[j - 1][1] || 0,
+          s3 = (sij0 - sij1) / 2;
+      for (var k = 0; k < i; ++k) {
+        var sk = series[order[k]],
+            skj0 = sk[j][1] || 0,
+            skj1 = sk[j - 1][1] || 0;
+        s3 += skj0 - skj1;
+      }
+      s1 += sij0, s2 += s3 * sij0;
+    }
+    s0[j - 1][1] += s0[j - 1][0] = y;
+    if (s1) y -= s2 / s1;
+  }
+  s0[j - 1][1] += s0[j - 1][0] = y;
+  none(series, order);
+}