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sample/dev/talk/bundle/popper-2.11.8/esm/utils/mergeByName.js

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+export default function mergeByName(modifiers) {
+  var merged = modifiers.reduce(function (merged, current) {
+    var existing = merged[current.name];
+    merged[current.name] = existing ? Object.assign({}, existing, current, {
+      options: Object.assign({}, existing.options, current.options),
+      data: Object.assign({}, existing.data, current.data)
+    }) : current;
+    return merged;
+  }, {}); // IE11 does not support Object.values
+
+  return Object.keys(merged).map(function (key) {
+    return merged[key];
+  });
+}