add book.js

node_modules/lodash/internal/baseIsEqual.js

@@ -0,0 +1,28 @@
+var baseIsEqualDeep = require('./baseIsEqualDeep'),
+    isObject = require('../lang/isObject'),
+    isObjectLike = require('./isObjectLike');
+
+/**
+ * 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) {
+  if (value === other) {
+    return true;
+  }
+  if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) {
+    return value !== value && other !== other;
+  }
+  return baseIsEqualDeep(value, other, baseIsEqual, customizer, isLoose, stackA, stackB);
+}
+
+module.exports = baseIsEqual;