added tests and broke up code

.eslintrc.js

@@ -1,7 +1,8 @@
 module.exports = {
   "env": {
     "es6": true,
-    "node": true
+    "node": true,
+    "jest": true
   },
   "extends": "eslint:recommended", 
   "rules": {

.gitignore

@@ -1 +1,2 @@
-node_modules
+node_modules
+.vscode

.travis.yml

@@ -0,0 +1,4 @@
+language: node_js
+node_js:
+  - '6'
+  - '8'

README.md

@@ -2,6 +2,11 @@
 
 A plugin for the [Parcel bundler](https://parceljs.org/) to visualise bundle contents.
 
+[![NPM Version][npm-image]][npm-url]
+[![Linux CI Build][travis-image]][travis-url]
+[![Windows CI Build][appveyor-image]][appveyor-url]
+[![Known Vulnerabilities][snyk-image]][snyk-url]
+
 ![Screenshot showing treemap of a bundle](/docs/bundle-report-example.png?raw=true)
 
 This plugin aims to make it easier to visualise a bundles contents and aid in troubleshooting and optimisation. If you know [webpack-bundle-analyzer](https://www.npmjs.com/package/webpack-bundle-analyzer/) then this plugin will be very familiar. Bundle contents is presented in a treemap that gives eash asset/folder an area relative to its size on disc.  
@@ -19,11 +24,19 @@ The next time you run your parcel build a bundle report will be saved to `<proje
 
 # Still TODO
  - Show details for assets on mouse hover
- - Some unit tests
  - Config to choose the name and output folder of the report
  - Command line arg for parcel so it's possible to generate report only when required
 
 
 # Credits
  - [webpack-bundle-analyzer](https://www.npmjs.com/package/webpack-bundle-analyzer/) - this plugin takes heavy inspiration from it and wouldnt exist without it
- - [Parcel](https://parceljs.org/) - A nice alternative bundler for when you dont need/want lots of configuration
+ - [Parcel](https://parceljs.org/) - A nice alternative bundler for when you dont need/want lots of configuration.
+
+[npm-image]: https://img.shields.io/npm/v/parcel-plugin-bundle-visualiser.svg
+[npm-url]: https://npmjs.org/package/parcel-plugin-bundle-visualiser
+[travis-image]: https://img.shields.io/travis/gregtillbrook/parcel-plugin-bundle-visualiser/master.svg?label=Linux%20CI%20Build
+[travis-url]: https://travis-ci.org/gregtillbrook/parcel-plugin-bundle-visualiser
+[appveyor-image]: https://img.shields.io/appveyor/ci/gregtillbrook/parcel-plugin-bundle-visualiser/master.svg?label=Windows%20CI%20Build
+[appveyor-url]: https://ci.appveyor.com/project/gregtillbrook/parcel-plugin-bundle-visualiser
+[snyk-image]: https://snyk.io/test/github/gregtillbrook/parcel-plugin-bundle-visualiser/badge.svg
+[snyk-url]: https://snyk.io/test/github/gregtillbrook/parcel-plugin-bundle-visualiser

appveyor.yml

@@ -0,0 +1,19 @@
+environment:
+  matrix:
+    - nodejs_version: '8'
+install:
+  - ps: Install-Product node $env:nodejs_version
+  - set CI=true
+  - npm install --global npm@latest
+  - set PATH=%APPDATA%\npm;%PATH%
+  - npm install
+matrix:
+  fast_finish: true
+build: off
+shallow_clone: true
+test_script:
+  - node --version
+  - npm --version
+  - npm test
+cache:
+  - '%APPDATA%\npm-cache'