Build system update

.eslintignore

@@ -1,3 +1,5 @@
 node_modules
 demo
 umd
+dist
+src/__tests__/*

.eslintrc

@@ -1,19 +1,7 @@
 {
+  "extends": ["airbnb", "airbnb/hooks"],
   "parser": "babel-eslint",
-  "extends": "eslint:recommended",
-  "env": {
-    "es6": true,
-    "node": true,
-    "browser": true,
-    "jest": true
-  },
-  "parserOptions": {
-    "ecmaFeatures": {
-      "jsx": true
-    }
-  },
   "rules": {
-    "consistent-this": 0,
-    "no-console": 0
+    "react/destructuring-assignment": 0
   }
-}
+}

.nvmrc

@@ -0,0 +1 @@
+v12.16.2

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - 6
+  - 12.16.2
 before_install:
   - npm install -g npm@latest
 cache:

babel.config.js

@@ -0,0 +1,11 @@
+module.exports = {
+  presets: [[
+    '@babel/preset-env',
+  ], '@babel/preset-react'],
+  plugins: [
+    '@babel/plugin-proposal-class-properties',
+    '@babel/plugin-proposal-object-rest-spread',
+    '@babel/plugin-proposal-optional-chaining',
+    '@babel/plugin-proposal-nullish-coalescing-operator',
+  ],
+};