Extract anyclip

vendor/node_modules/d3-scale/src/sequentialQuantile.js

@@ -0,0 +1,38 @@
+import {ascending, bisect, quantile} from "d3-array";
+import {identity} from "./continuous.js";
+import {initInterpolator} from "./init.js";
+
+export default function sequentialQuantile() {
+  var domain = [],
+      interpolator = identity;
+
+  function scale(x) {
+    if (x != null && !isNaN(x = +x)) return interpolator((bisect(domain, x, 1) - 1) / (domain.length - 1));
+  }
+
+  scale.domain = function(_) {
+    if (!arguments.length) return domain.slice();
+    domain = [];
+    for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d);
+    domain.sort(ascending);
+    return scale;
+  };
+
+  scale.interpolator = function(_) {
+    return arguments.length ? (interpolator = _, scale) : interpolator;
+  };
+
+  scale.range = function() {
+    return domain.map((d, i) => interpolator(i / (domain.length - 1)));
+  };
+
+  scale.quantiles = function(n) {
+    return Array.from({length: n + 1}, (_, i) => quantile(domain, i / n));
+  };
+
+  scale.copy = function() {
+    return sequentialQuantile(interpolator).domain(domain);
+  };
+
+  return initInterpolator.apply(scale, arguments);
+}