improved viewers

build_vtk_bundle/node_modules/d3-array/src/shuffle.js

@@ -0,0 +1,13 @@
+export default shuffler(Math.random);
+
+export function shuffler(random) {
+  return function shuffle(array, i0 = 0, i1 = array.length) {
+    let m = i1 - (i0 = +i0);
+    while (m) {
+      const i = random() * m-- | 0, t = array[m + i0];
+      array[m + i0] = array[i + i0];
+      array[i + i0] = t;
+    }
+    return array;
+  };
+}