Index: node_modules/d3-random/src/bates.js
===================================================================
--- node_modules/d3-random/src/bates.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/bates.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,19 @@
+import defaultSource from "./defaultSource.js";
+import irwinHall from "./irwinHall.js";
+
+export default (function sourceRandomBates(source) {
+  var I = irwinHall.source(source);
+
+  function randomBates(n) {
+    // use limiting distribution at n === 0
+    if ((n = +n) === 0) return source;
+    var randomIrwinHall = I(n);
+    return function() {
+      return randomIrwinHall() / n;
+    };
+  }
+
+  randomBates.source = sourceRandomBates;
+
+  return randomBates;
+})(defaultSource);
Index: node_modules/d3-random/src/bernoulli.js
===================================================================
--- node_modules/d3-random/src/bernoulli.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/bernoulli.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,14 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomBernoulli(source) {
+  function randomBernoulli(p) {
+    if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p");
+    return function() {
+      return Math.floor(source() + p);
+    };
+  }
+
+  randomBernoulli.source = sourceRandomBernoulli;
+
+  return randomBernoulli;
+})(defaultSource);
Index: node_modules/d3-random/src/beta.js
===================================================================
--- node_modules/d3-random/src/beta.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/beta.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,19 @@
+import defaultSource from "./defaultSource.js";
+import gamma from "./gamma.js";
+
+export default (function sourceRandomBeta(source) {
+  var G = gamma.source(source);
+
+  function randomBeta(alpha, beta) {
+    var X = G(alpha),
+        Y = G(beta);
+    return function() {
+      var x = X();
+      return x === 0 ? 0 : x / (x + Y());
+    };
+  }
+
+  randomBeta.source = sourceRandomBeta;
+
+  return randomBeta;
+})(defaultSource);
Index: node_modules/d3-random/src/binomial.js
===================================================================
--- node_modules/d3-random/src/binomial.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/binomial.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,38 @@
+import defaultSource from "./defaultSource.js";
+import beta from "./beta.js";
+import geometric from "./geometric.js";
+
+export default (function sourceRandomBinomial(source) {
+  var G = geometric.source(source),
+      B = beta.source(source);
+
+  function randomBinomial(n, p) {
+    n = +n;
+    if ((p = +p) >= 1) return () => n;
+    if (p <= 0) return () => 0;
+    return function() {
+      var acc = 0, nn = n, pp = p;
+      while (nn * pp > 16 && nn * (1 - pp) > 16) {
+        var i = Math.floor((nn + 1) * pp),
+            y = B(i, nn - i + 1)();
+        if (y <= pp) {
+          acc += i;
+          nn -= i;
+          pp = (pp - y) / (1 - y);
+        } else {
+          nn = i - 1;
+          pp /= y;
+        }
+      }
+      var sign = pp < 0.5,
+          pFinal = sign ? pp : 1 - pp,
+          g = G(pFinal);
+      for (var s = g(), k = 0; s <= nn; ++k) s += g();
+      return acc + (sign ? k : nn - k);
+    };
+  }
+
+  randomBinomial.source = sourceRandomBinomial;
+
+  return randomBinomial;
+})(defaultSource);
Index: node_modules/d3-random/src/cauchy.js
===================================================================
--- node_modules/d3-random/src/cauchy.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/cauchy.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,15 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomCauchy(source) {
+  function randomCauchy(a, b) {
+    a = a == null ? 0 : +a;
+    b = b == null ? 1 : +b;
+    return function() {
+      return a + b * Math.tan(Math.PI * source());
+    };
+  }
+
+  randomCauchy.source = sourceRandomCauchy;
+
+  return randomCauchy;
+})(defaultSource);
Index: node_modules/d3-random/src/defaultSource.js
===================================================================
--- node_modules/d3-random/src/defaultSource.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/defaultSource.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,1 @@
+export default Math.random;
Index: node_modules/d3-random/src/exponential.js
===================================================================
--- node_modules/d3-random/src/exponential.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/exponential.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,13 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomExponential(source) {
+  function randomExponential(lambda) {
+    return function() {
+      return -Math.log1p(-source()) / lambda;
+    };
+  }
+
+  randomExponential.source = sourceRandomExponential;
+
+  return randomExponential;
+})(defaultSource);
Index: node_modules/d3-random/src/gamma.js
===================================================================
--- node_modules/d3-random/src/gamma.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/gamma.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,34 @@
+import defaultSource from "./defaultSource.js";
+import normal from "./normal.js";
+
+export default (function sourceRandomGamma(source) {
+  var randomNormal = normal.source(source)();
+
+  function randomGamma(k, theta) {
+    if ((k = +k) < 0) throw new RangeError("invalid k");
+    // degenerate distribution if k === 0
+    if (k === 0) return () => 0;
+    theta = theta == null ? 1 : +theta;
+    // exponential distribution if k === 1
+    if (k === 1) return () => -Math.log1p(-source()) * theta;
+
+    var d = (k < 1 ? k + 1 : k) - 1 / 3,
+        c = 1 / (3 * Math.sqrt(d)),
+        multiplier = k < 1 ? () => Math.pow(source(), 1 / k) : () => 1;
+    return function() {
+      do {
+        do {
+          var x = randomNormal(),
+              v = 1 + c * x;
+        } while (v <= 0);
+        v *= v * v;
+        var u = 1 - source();
+      } while (u >= 1 - 0.0331 * x * x * x * x && Math.log(u) >= 0.5 * x * x + d * (1 - v + Math.log(v)));
+      return d * v * multiplier() * theta;
+    };
+  }
+
+  randomGamma.source = sourceRandomGamma;
+
+  return randomGamma;
+})(defaultSource);
Index: node_modules/d3-random/src/geometric.js
===================================================================
--- node_modules/d3-random/src/geometric.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/geometric.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,17 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomGeometric(source) {
+  function randomGeometric(p) {
+    if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p");
+    if (p === 0) return () => Infinity;
+    if (p === 1) return () => 1;
+    p = Math.log1p(-p);
+    return function() {
+      return 1 + Math.floor(Math.log1p(-source()) / p);
+    };
+  }
+
+  randomGeometric.source = sourceRandomGeometric;
+
+  return randomGeometric;
+})(defaultSource);
Index: node_modules/d3-random/src/index.js
===================================================================
--- node_modules/d3-random/src/index.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/index.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,18 @@
+export {default as randomUniform} from "./uniform.js";
+export {default as randomInt} from "./int.js";
+export {default as randomNormal} from "./normal.js";
+export {default as randomLogNormal} from "./logNormal.js";
+export {default as randomBates} from "./bates.js";
+export {default as randomIrwinHall} from "./irwinHall.js";
+export {default as randomExponential} from "./exponential.js";
+export {default as randomPareto} from "./pareto.js";
+export {default as randomBernoulli} from "./bernoulli.js";
+export {default as randomGeometric} from "./geometric.js";
+export {default as randomBinomial} from "./binomial.js";
+export {default as randomGamma} from "./gamma.js";
+export {default as randomBeta} from "./beta.js";
+export {default as randomWeibull} from "./weibull.js";
+export {default as randomCauchy} from "./cauchy.js";
+export {default as randomLogistic} from "./logistic.js";
+export {default as randomPoisson} from "./poisson.js";
+export {default as randomLcg} from "./lcg.js";
Index: node_modules/d3-random/src/int.js
===================================================================
--- node_modules/d3-random/src/int.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/int.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,16 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomInt(source) {
+  function randomInt(min, max) {
+    if (arguments.length < 2) max = min, min = 0;
+    min = Math.floor(min);
+    max = Math.floor(max) - min;
+    return function() {
+      return Math.floor(source() * max + min);
+    };
+  }
+
+  randomInt.source = sourceRandomInt;
+
+  return randomInt;
+})(defaultSource);
Index: node_modules/d3-random/src/irwinHall.js
===================================================================
--- node_modules/d3-random/src/irwinHall.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/irwinHall.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,15 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomIrwinHall(source) {
+  function randomIrwinHall(n) {
+    if ((n = +n) <= 0) return () => 0;
+    return function() {
+      for (var sum = 0, i = n; i > 1; --i) sum += source();
+      return sum + i * source();
+    };
+  }
+
+  randomIrwinHall.source = sourceRandomIrwinHall;
+
+  return randomIrwinHall;
+})(defaultSource);
Index: node_modules/d3-random/src/lcg.js
===================================================================
--- node_modules/d3-random/src/lcg.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/lcg.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,9 @@
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const mul = 0x19660D;
+const inc = 0x3C6EF35F;
+const eps = 1 / 0x100000000;
+
+export default function lcg(seed = Math.random()) {
+  let state = (0 <= seed && seed < 1 ? seed / eps : Math.abs(seed)) | 0;
+  return () => (state = mul * state + inc | 0, eps * (state >>> 0));
+}
Index: node_modules/d3-random/src/logNormal.js
===================================================================
--- node_modules/d3-random/src/logNormal.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/logNormal.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,17 @@
+import defaultSource from "./defaultSource.js";
+import normal from "./normal.js";
+
+export default (function sourceRandomLogNormal(source) {
+  var N = normal.source(source);
+
+  function randomLogNormal() {
+    var randomNormal = N.apply(this, arguments);
+    return function() {
+      return Math.exp(randomNormal());
+    };
+  }
+
+  randomLogNormal.source = sourceRandomLogNormal;
+
+  return randomLogNormal;
+})(defaultSource);
Index: node_modules/d3-random/src/logistic.js
===================================================================
--- node_modules/d3-random/src/logistic.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/logistic.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,16 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomLogistic(source) {
+  function randomLogistic(a, b) {
+    a = a == null ? 0 : +a;
+    b = b == null ? 1 : +b;
+    return function() {
+      var u = source();
+      return a + b * Math.log(u / (1 - u));
+    };
+  }
+
+  randomLogistic.source = sourceRandomLogistic;
+
+  return randomLogistic;
+})(defaultSource);
Index: node_modules/d3-random/src/normal.js
===================================================================
--- node_modules/d3-random/src/normal.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/normal.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,28 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomNormal(source) {
+  function randomNormal(mu, sigma) {
+    var x, r;
+    mu = mu == null ? 0 : +mu;
+    sigma = sigma == null ? 1 : +sigma;
+    return function() {
+      var y;
+
+      // If available, use the second previously-generated uniform random.
+      if (x != null) y = x, x = null;
+
+      // Otherwise, generate a new x and y.
+      else do {
+        x = source() * 2 - 1;
+        y = source() * 2 - 1;
+        r = x * x + y * y;
+      } while (!r || r > 1);
+
+      return mu + sigma * y * Math.sqrt(-2 * Math.log(r) / r);
+    };
+  }
+
+  randomNormal.source = sourceRandomNormal;
+
+  return randomNormal;
+})(defaultSource);
Index: node_modules/d3-random/src/pareto.js
===================================================================
--- node_modules/d3-random/src/pareto.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/pareto.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,15 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomPareto(source) {
+  function randomPareto(alpha) {
+    if ((alpha = +alpha) < 0) throw new RangeError("invalid alpha");
+    alpha = 1 / -alpha;
+    return function() {
+      return Math.pow(1 - source(), alpha);
+    };
+  }
+
+  randomPareto.source = sourceRandomPareto;
+
+  return randomPareto;
+})(defaultSource);
Index: node_modules/d3-random/src/poisson.js
===================================================================
--- node_modules/d3-random/src/poisson.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/poisson.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,27 @@
+import defaultSource from "./defaultSource.js";
+import binomial from "./binomial.js";
+import gamma from "./gamma.js";
+
+export default (function sourceRandomPoisson(source) {
+  var G = gamma.source(source),
+      B = binomial.source(source);
+
+  function randomPoisson(lambda) {
+    return function() {
+      var acc = 0, l = lambda;
+      while (l > 16) {
+        var n = Math.floor(0.875 * l),
+            t = G(n)();
+        if (t > l) return acc + B(n - 1, l / t)();
+        acc += n;
+        l -= t;
+      }
+      for (var s = -Math.log1p(-source()), k = 0; s <= l; ++k) s -= Math.log1p(-source());
+      return acc + k;
+    };
+  }
+
+  randomPoisson.source = sourceRandomPoisson;
+
+  return randomPoisson;
+})(defaultSource);
Index: node_modules/d3-random/src/uniform.js
===================================================================
--- node_modules/d3-random/src/uniform.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/uniform.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,17 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomUniform(source) {
+  function randomUniform(min, max) {
+    min = min == null ? 0 : +min;
+    max = max == null ? 1 : +max;
+    if (arguments.length === 1) max = min, min = 0;
+    else max -= min;
+    return function() {
+      return source() * max + min;
+    };
+  }
+
+  randomUniform.source = sourceRandomUniform;
+
+  return randomUniform;
+})(defaultSource);
Index: node_modules/d3-random/src/weibull.js
===================================================================
--- node_modules/d3-random/src/weibull.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-random/src/weibull.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,22 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomWeibull(source) {
+  function randomWeibull(k, a, b) {
+    var outerFunc;
+    if ((k = +k) === 0) {
+      outerFunc = x => -Math.log(x);
+    } else {
+      k = 1 / k;
+      outerFunc = x => Math.pow(x, k);
+    }
+    a = a == null ? 0 : +a;
+    b = b == null ? 1 : +b;
+    return function() {
+      return a + b * outerFunc(-Math.log1p(-source()));
+    };
+  }
+
+  randomWeibull.source = sourceRandomWeibull;
+
+  return randomWeibull;
+})(defaultSource);