add book.js

node_modules/lodash/internal/toPath.js

@@ -0,0 +1,28 @@
+var baseToString = require('./baseToString'),
+    isArray = require('../lang/isArray');
+
+/** Used to match property names within property paths. */
+var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\n\\]|\\.)*?)\2)\]/g;
+
+/** Used to match backslashes in property paths. */
+var reEscapeChar = /\\(\\)?/g;
+
+/**
+ * Converts `value` to property path array if it's not one.
+ *
+ * @private
+ * @param {*} value The value to process.
+ * @returns {Array} Returns the property path array.
+ */
+function toPath(value) {
+  if (isArray(value)) {
+    return value;
+  }
+  var result = [];
+  baseToString(value).replace(rePropName, function(match, number, quote, string) {
+    result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
+  });
+  return result;
+}
+
+module.exports = toPath;