Specify node version to 10.16.3, npm version to 6.9.0

Author: jackblackevo

package.json

@@ -3,6 +3,10 @@
  "version": "1.0.0",
  "description": "Vanilla JS Webpack Project",
  "main": "index.js",
+ "engines": {
+ "node": ">= 10.16.3",
+ "npm": ">= 6.9.0"
+ },
  "scripts": {
  "test": "echo \"Error: no test specified\" && exit 1",
  "dev": "webpack-dev-server --progress --config webpack.dev.js",