add book.js

node_modules/lodash/string/kebabCase.js

@@ -0,0 +1,26 @@
+var createCompounder = require('../internal/createCompounder');
+
+/**
+ * Converts `string` to [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
+ *
+ * @static
+ * @memberOf _
+ * @category String
+ * @param {string} [string=''] The string to convert.
+ * @returns {string} Returns the kebab cased string.
+ * @example
+ *
+ * _.kebabCase('Foo Bar');
+ * // => 'foo-bar'
+ *
+ * _.kebabCase('fooBar');
+ * // => 'foo-bar'
+ *
+ * _.kebabCase('__foo_bar__');
+ * // => 'foo-bar'
+ */
+var kebabCase = createCompounder(function(result, word, index) {
+  return result + (index ? '-' : '') + word.toLowerCase();
+});
+
+module.exports = kebabCase;