B-Tree Index

`` js
var btree = require('terraformer-geostore-index-btree').BinarySearchTree;

var tree = new btree();

tree.add("Crimes", 1, function (err, data) {
console.log(data);
});

tree.add("Liquor", 2, function (err, data) {
console.log(data);
});

tree.add("Crimes", 3, function (err, data) {
console.log(data);
});

tree.equals("Crimes", function (err, data) {
console.log(data);
// { "1": true, "3": true };
});
`

$3

Derived from https://github.com/nzakas/computer-science-in-javascript

`
/*
* Binary Search Tree implementation in JavaScript
* Copyright (c) 2009 Nicholas C. Zakas
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
``