more work

node_modules/lodash/internal/baseIsEqual.js

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+var baseIsEqualDeep = require('./baseIsEqualDeep');
+
+/**
+ * The base implementation of `_.isEqual` without support for `this` binding
+ * `customizer` functions.
+ *
+ * @private
+ * @param {*} value The value to compare.
+ * @param {*} other The other value to compare.
+ * @param {Function} [customizer] The function to customize comparing values.
+ * @param {boolean} [isLoose] Specify performing partial comparisons.
+ * @param {Array} [stackA] Tracks traversed `value` objects.
+ * @param {Array} [stackB] Tracks traversed `other` objects.
+ * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+ */
+function baseIsEqual(value, other, customizer, isLoose, stackA, stackB) {
+  // Exit early for identical values.
+  if (value === other) {
+    // Treat `+0` vs. `-0` as not equal.
+    return value !== 0 || (1 / value == 1 / other);
+  }
+  var valType = typeof value,
+      othType = typeof other;
+
+  // Exit early for unlike primitive values.
+  if ((valType != 'function' && valType != 'object' && othType != 'function' && othType != 'object') ||
+      value == null || other == null) {
+    // Return `false` unless both values are `NaN`.
+    return value !== value && other !== other;
+  }
+  return baseIsEqualDeep(value, other, baseIsEqual, customizer, isLoose, stackA, stackB);
+}
+
+module.exports = baseIsEqual;