Index: node_modules/d3-shape/src/symbol.js
===================================================================
--- node_modules/d3-shape/src/symbol.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-shape/src/symbol.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,66 @@
+import constant from "./constant.js";
+import {withPath} from "./path.js";
+import asterisk from "./symbol/asterisk.js";
+import circle from "./symbol/circle.js";
+import cross from "./symbol/cross.js";
+import diamond from "./symbol/diamond.js";
+import diamond2 from "./symbol/diamond2.js";
+import plus from "./symbol/plus.js";
+import square from "./symbol/square.js";
+import square2 from "./symbol/square2.js";
+import star from "./symbol/star.js";
+import triangle from "./symbol/triangle.js";
+import triangle2 from "./symbol/triangle2.js";
+import wye from "./symbol/wye.js";
+import times from "./symbol/times.js";
+
+// These symbols are designed to be filled.
+export const symbolsFill = [
+  circle,
+  cross,
+  diamond,
+  square,
+  star,
+  triangle,
+  wye
+];
+
+// These symbols are designed to be stroked (with a width of 1.5px and round caps).
+export const symbolsStroke = [
+  circle,
+  plus,
+  times,
+  triangle2,
+  asterisk,
+  square2,
+  diamond2
+];
+
+export default function Symbol(type, size) {
+  let context = null,
+      path = withPath(symbol);
+
+  type = typeof type === "function" ? type : constant(type || circle);
+  size = typeof size === "function" ? size : constant(size === undefined ? 64 : +size);
+
+  function symbol() {
+    let buffer;
+    if (!context) context = buffer = path();
+    type.apply(this, arguments).draw(context, +size.apply(this, arguments));
+    if (buffer) return context = null, buffer + "" || null;
+  }
+
+  symbol.type = function(_) {
+    return arguments.length ? (type = typeof _ === "function" ? _ : constant(_), symbol) : type;
+  };
+
+  symbol.size = function(_) {
+    return arguments.length ? (size = typeof _ === "function" ? _ : constant(+_), symbol) : size;
+  };
+
+  symbol.context = function(_) {
+    return arguments.length ? (context = _ == null ? null : _, symbol) : context;
+  };
+
+  return symbol;
+}