Add size limit

.travis.yml

@@ -9,16 +9,16 @@ cache:
 matrix:
   include:
     - node_js: '9'
-      script: npm run test -- --runInBand
+      script: npm run test -- --runInBand && npm run size
       env: CI=tests 9
     - node_js: '9'
-      script: npm test -- --runInBand --coverage
+      script: npm test -- --runInBand --coverage && npm run size
       env: CI=coverage
     - node_js: '8'
-      script: npm run test -- --runInBand
+      script: npm run test -- --runInBand && npm run size
       env: CI=tests 8
     - node_js: '6'
-      script: npm run test -- --runInBand
+      script: npm run test -- --runInBand && npm run size
       env: CI=tests 6
 before_install:
   - npm install -g npm@latest

README.md

@@ -3,6 +3,8 @@
 [![Build Status](https://travis-ci.org/kristerkari/css-viewport-units-transform.svg?branch=master)](https://travis-ci.org/kristerkari/css-viewport-units-transform)
 [![Build status](https://ci.appveyor.com/api/projects/status/yurf32v23qawgkmp/branch/master?svg=true)](https://ci.appveyor.com/project/kristerkari/css-viewport-units-transform/branch/master)
 [![Coverage Status](https://coveralls.io/repos/github/kristerkari/css-viewport-units-transform/badge.svg?branch=master)](https://coveralls.io/github/kristerkari/css-viewport-units-transform?branch=master)
+![Size](https://img.shields.io/bundlephobia/minzip/css-viewport-units-transform.svg)
+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://egghead.io/courses/how-to-contribute-to-an-open-source-project-on-github)
 
 Transform CSS viewport units of a Javascript style object to pixels based on window dimensions.
 

appveyor.yml

@@ -16,3 +16,4 @@ test_script:
   - node --version
   - npm --version
   - cmd: "npm test"
+  - cmd: "npm run size"

package.json

@@ -29,6 +29,7 @@
     "url": "git+https://github.com/kristerkari/css-viewport-units-transform.git"
   },
   "scripts": {
+    "size": "npm run build && size-limit",
     "prepublish": "npm run build",
     "prebuild": "rimraf dist",
     "build": "babel src --out-dir dist --ignore src/__tests__,src/__mocks__",
@@ -47,7 +48,8 @@
     "lint-staged": "^7.1.2",
     "npmpub": "^3.1.0",
     "prettier": "^1.13.3",
-    "rimraf": "^2.6.2"
+    "rimraf": "^2.6.2",
+    "size-limit": "^0.18.3"
   },
   "lint-staged": {
     "*.{js,md,json}": [
@@ -60,6 +62,12 @@
     "singleQuote": false,
     "trailingComma": "none"
   },
+  "size-limit": [
+    {
+      "limit": "500 B",
+      "path": "dist/index.js"
+    }
+  ],
   "jest": {
     "collectCoverageFrom": [
       "src/*.js"