Upgrade dependencies

package.json

@@ -30,13 +30,13 @@
   "license": "MIT",
   "dependencies": {
     "@mapbox/vector-tile": "^1.3.1",
-    "bluebird": "^3.5.5",
+    "bluebird": "^3.7.0",
     "bresenham": "0.0.4",
-    "earcut": "^2.1.5",
+    "earcut": "^2.2.1",
     "keypress": "^0.2.1",
     "node-fetch": "^2.6.0",
     "pbf": "^3.2.0",
-    "rbush": "^2.0.2",
+    "rbush": "^3.0.1",
     "simplify-js": "^1.2.3",
     "string-width": "^4.1.0",
     "term-mouse": "^0.2.0",
@@ -44,7 +44,7 @@
     "x256": "0.0.2"
   },
   "devDependencies": {
-    "eslint": "^5.16.0",
-    "jest": "^24.8.0"
+    "eslint": "^6.5.1",
+    "jest": "^24.9.0"
   }
 }

src/LabelBuffer.js

@@ -6,13 +6,13 @@
   and to find labels underneath a mouse cursor's position
 */
 'use strict';
-const Rbush = require('rbush');
+const RBush = require('rbush');
 const stringWidth = require('string-width');
 
 module.exports = class LabelBuffer {
 
   constructor() {
-    this.tree = Rbush();
+    this.tree = new RBush();
     this.margin = 5;
   }
 

src/Tile.js

@@ -8,7 +8,7 @@
 const VectorTile = require('@mapbox/vector-tile').VectorTile;
 const Protobuf = require('pbf');
 const zlib = require('zlib');
-const rbush = require('rbush');
+const RBush = require('rbush');
 const x256 = require('x256');
 
 const config = require('./config');
@@ -62,7 +62,7 @@ class Tile {
       for (let i = 0; i < layer.length; i++) {
         // TODO: caching of similar attributes to avoid looking up the style each time
         //continue if @styler and not @styler.getStyleFor layer, feature
-        
+
         const feature = layer.feature(i);
         feature.properties.$type = [undefined, 'Point', 'LineString', 'Polygon'][feature.type];
         let style;
@@ -111,7 +111,7 @@ class Tile {
           }
         }
       }
-      const tree = rbush(18);
+      const tree = new RBush(18);
       tree.load(nodes);
       layers[name] = {
         extent: layer.extent,