.babelrc

{
  "ignore": "node_modules",
  "env": {
    "test": {
      "plugins": ["transform-es2015-modules-commonjs"]
    }
  },
  "presets": [
    "react",
    [
      "env",
      {
        "targets": {
          "browsers": ["last 2 versions", "safari >= 7"]
        },
        "loose": true,
        "modules": false
      }
    ]
  ],
  "plugins": [
    ["react-hot-loader/babel"],
    ["babel-plugin-syntax-dynamic-import"],
    ["babel-plugin-dynamic-import-webpack"],
    ["transform-class-properties"],
    ["transform-object-rest-spread", { "useBuiltIns": true }],
    ["transform-react-jsx", { "pragma": "h" }],
    [
      "module-resolver",
      {
        "root": ["."],
        "alias": {
          "react": "preact-compat",
          "react-dom": "preact-compat"
        }
      }
    ]
  ]
}