more work

node_modules/lodash/internal/extremumBy.js

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+var baseEach = require('./baseEach');
+
+/** Used as references for `-Infinity` and `Infinity`. */
+var NEGATIVE_INFINITY = Number.NEGATIVE_INFINITY,
+    POSITIVE_INFINITY = Number.POSITIVE_INFINITY;
+
+/**
+ * Gets the extremum value of `collection` invoking `iteratee` for each value
+ * in `collection` to generate the criterion by which the value is ranked.
+ * The `iteratee` is invoked with three arguments: (value, index, collection).
+ *
+ * @private
+ * @param {Array|Object|string} collection The collection to iterate over.
+ * @param {Function} iteratee The function invoked per iteration.
+ * @param {boolean} [isMin] Specify returning the minimum, instead of the
+ *  maximum, extremum value.
+ * @returns {*} Returns the extremum value.
+ */
+function extremumBy(collection, iteratee, isMin) {
+  var exValue = isMin ? POSITIVE_INFINITY : NEGATIVE_INFINITY,
+      computed = exValue,
+      result = computed;
+
+  baseEach(collection, function(value, index, collection) {
+    var current = iteratee(value, index, collection);
+    if ((isMin ? (current < computed) : (current > computed)) ||
+        (current === exValue && current === result)) {
+      computed = current;
+      result = value;
+    }
+  });
+  return result;
+}
+
+module.exports = extremumBy;