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node_modules/d3-array/src/greatestIndex.js

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+import ascending from "./ascending.js";
+import maxIndex from "./maxIndex.js";
+
+export default function greatestIndex(values, compare = ascending) {
+  if (compare.length === 1) return maxIndex(values, compare);
+  let maxValue;
+  let max = -1;
+  let index = -1;
+  for (const value of values) {
+    ++index;
+    if (max < 0
+        ? compare(value, value) === 0
+        : compare(value, maxValue) > 0) {
+      maxValue = value;
+      max = index;
+    }
+  }
+  return max;
+}