Initial commit

node_modules/d3-array/src/sort.js

@@ -0,0 +1,39 @@
+import ascending from "./ascending.js";
+import permute from "./permute.js";
+
+export default function sort(values, ...F) {
+  if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable");
+  values = Array.from(values);
+  let [f] = F;
+  if ((f && f.length !== 2) || F.length > 1) {
+    const index = Uint32Array.from(values, (d, i) => i);
+    if (F.length > 1) {
+      F = F.map(f => values.map(f));
+      index.sort((i, j) => {
+        for (const f of F) {
+          const c = ascendingDefined(f[i], f[j]);
+          if (c) return c;
+        }
+      });
+    } else {
+      f = values.map(f);
+      index.sort((i, j) => ascendingDefined(f[i], f[j]));
+    }
+    return permute(values, index);
+  }
+  return values.sort(compareDefined(f));
+}
+
+export function compareDefined(compare = ascending) {
+  if (compare === ascending) return ascendingDefined;
+  if (typeof compare !== "function") throw new TypeError("compare is not a function");
+  return (a, b) => {
+    const x = compare(a, b);
+    if (x || x === 0) return x;
+    return (compare(b, b) === 0) - (compare(a, a) === 0);
+  };
+}
+
+export function ascendingDefined(a, b) {
+  return (a == null || !(a >= a)) - (b == null || !(b >= b)) || (a < b ? -1 : a > b ? 1 : 0);
+}