Index: node_modules/d3-force/src/lcg.js
===================================================================
--- node_modules/d3-force/src/lcg.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-force/src/lcg.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,9 @@
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const a = 1664525;
+const c = 1013904223;
+const m = 4294967296; // 2^32
+
+export default function() {
+  let s = 1;
+  return () => (s = (a * s + c) % m) / m;
+}