add index to npm module

Author: amejiarosario

notes.md

@@ -1,3 +1,15 @@
+# Semantic Versioning
+
+This project is using semantic versioning which means that versions has tree numbers:
+
+> Major.Minor.Patch, e.g. 1.3.7
+
+and the meaning the the following:
+
+- Major: breaking (remove functionality or change API)
+- Minor: Features (new functionality, adding new topics)
+- Patch: Fixes (bug fixes, typos, etc.)
+
 # Roadmap
 - [x] PDF: callouts and emojis are not showing correctly
 - [x] Writeup on balancing trees

package.json

@@ -2,7 +2,7 @@
   "name": "dsa.js",
   "version": "1.0.0",
   "description": "Data Structures & Algorithms in JS",
-  "main": "./src/data-structures/graphs/graph.js",
+  "main": "./src/index.js",
   "dependencies": {
     "lodash": "4.17.11"
   },

src/data-structures/zz-mixed-ds/lru-cache-1.js renamed to src/data-structures/custom/lru-cache-1.js

@@ -0,0 +1,39 @@
+// data structures
+const LinkedList = require('./data-structures/linked-lists/linked-list');
+const Queue = require('./data-structures/queues/queue');
+const Stack = require('./data-structures/stacks/stack');
+const Graph = require('./data-structures/graphs/graph');
+const HashMap = require('./data-structures/maps/hash-maps/hash-map');
+const TreeMap = require('./data-structures/maps/tree-maps/tree-map');
+const HashSet = require('./data-structures/sets/hash-set');
+const TreeSet = require('./data-structures/sets/tree-set');
+const BinarySearchTree = require('./data-structures/trees/binary-search-tree');
+const AvlTree = require('./data-structures/trees/avl-tree');
+const RedBlackTree = require('./data-structures/trees/red-black-tree');
+const LRUCache = require('./data-structures/custom/lru-cache');
+// algorithms
+const bubbleSort = require('./algorithms/sorting/bubble-sort');
+const insertionSort = require('./algorithms/sorting/insertion-sort');
+const selectionSort = require('./algorithms/sorting/selection-sort');
+const quickSort = require('./algorithms/sorting/quick-sort');
+const mergeSort = require('./algorithms/sorting/merge-sort');
+
+module.exports = {
+  LinkedList,
+  Queue,
+  Stack,
+  Graph,
+  HashMap,
+  TreeMap,
+  HashSet,
+  TreeSet,
+  BinarySearchTree,
+  AvlTree,
+  RedBlackTree,
+  LRUCache,
+  bubbleSort,
+  insertionSort,
+  selectionSort,
+  quickSort,
+  mergeSort,
+};