upgrade node to v16, and update dependencies

Author: xiangxn

.babelrc

@@ -1,8 +1,16 @@
 {
-  "presets": ["env", "babel-preset-react", "airbnb", "babel-preset-stage-0"],
+  "presets": [
+    [
+      "@babel/preset-env",
+      { "modules": false, "targets": { "node": "current" } }
+    ],
+    ["@babel/preset-react", { "targets": { "node": "current" } }],
+    "airbnb"
+  ],
   "plugins": [
     "add-module-exports",
     "transform-class-properties",
-    ["transform-es2015-classes", { loose: true }],
+    "@babel/plugin-transform-classes",
+    ["transform-es2015-classes", { "loose": true }]
   ]
 }

.eslintrc

@@ -5,12 +5,36 @@
     "browser": true,
     "es6": true
   },
-  "parser": "babel-eslint",
-  "ecmaFeatures": {
-    "modules": true,
-    "jsx": true
+  "parser": "@babel/eslint-parser",
+  "parserOptions": {
+    "ecmaFeatures": {
+      "modules": true,
+      "jsx": true
+    }
   },
   "rules": {
     "semi": [2, "never"],
+    "no-redeclare": 0,
+    "max-classes-per-file": 0,
+    "quotes": 0,
+    "indent": 0,
+    "import/no-import-module-exports": 0,
+    "no-useless-constructor": 0,
+    "no-multiple-empty-lines": 0,
+    "no-prototype-builtins": 0,
+    "no-param-reassign": 0,
+    "no-else-return": 0,
+    "prefer-spread": 0,
+    "no-underscore-dangle": 0,
+    "arrow-parens": 0,
+    "operator-linebreak": 0,
+    "no-return-assign": 0,
+    "comma-dangle": 0,
+    "object-shorthand": 0,
+    "no-plusplus": 0,
+    "no-unneeded-ternary": 0,
+    "class-methods-use-this": 0,
+    "prefer-destructuring": 0,
+    "arrow-body-style": 0
   }
 }

.travis.yml

@@ -1,6 +1,7 @@
 sudo: false
 language: node_js
-script: npm run lint && npm run coverage
+node_js: 16
+script: yarn run lint && yarn run coverage
 after_script: cat ./coverage/lcov.info | coveralls
 node_js:
   - "stable"

dist.config.js

@@ -3,14 +3,15 @@ module.exports = {
   entry: {
     'alt': ['./index.js'],
   },
+  mode: "production",
   output: {
     path: __dirname + '/dist',
     filename: '[name].js',
     library: 'Alt',
     libraryTarget: 'umd'
   },
   module: {
-    loaders: [{
+    rules: [{
       test: /\.js$/,
       loader: 'babel-loader',
       exclude: /node_modules/

dist.min.config.js

@@ -3,14 +3,15 @@ module.exports = {
   entry: {
     'alt': ['./index.js'],
   },
+  mode: "production",
   output: {
     path: __dirname + '/dist',
     filename: '[name].min.js',
     library: 'Alt',
     libraryTarget: 'umd'
   },
   module: {
-    loaders: [{
+    rules: [{
       test: /\.js$/,
       loader: 'babel-loader',
       exclude: /node_modules/