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node_modules/ramda/es/uniqBy.js

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+import _Set from "./internal/_Set.js";
+import _curry2 from "./internal/_curry2.js";
+/**
+ * Returns a new list containing only one copy of each element in the original
+ * list, based upon the value returned by applying the supplied function to
+ * each list element. Prefers the first item if the supplied function produces
+ * the same value on two items. [`R.equals`](#equals) is used for comparison.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.16.0
+ * @category List
+ * @sig (a -> b) -> [a] -> [a]
+ * @param {Function} fn A function used to produce a value to use during comparisons.
+ * @param {Array} list The array to consider.
+ * @return {Array} The list of unique items.
+ * @example
+ *
+ *      R.uniqBy(Math.abs, [-1, -5, 2, 10, 1, 2]); //=> [-1, -5, 2, 10]
+ */
+
+var uniqBy =
+/*#__PURE__*/
+_curry2(function uniqBy(fn, list) {
+  var set = new _Set();
+  var result = [];
+  var idx = 0;
+  var appliedItem, item;
+
+  while (idx < list.length) {
+    item = list[idx];
+    appliedItem = fn(item);
+
+    if (set.add(appliedItem)) {
+      result.push(item);
+    }
+
+    idx += 1;
+  }
+
+  return result;
+});
+
+export default uniqBy;