.babelrc

{
  "presets": [
    ["@babel/env", { "modules": "commonjs", "useBuiltIns": false, "debug": true }],
    "@babel/typescript"
  ],
  "plugins": [
    "@babel/proposal-class-properties",
    "@babel/proposal-object-rest-spread",
    ["add-header-comment", {
      "files": {
        "src/js/Constants.ts": {
          "header": [
            "This file has been generated by Babel. DO NOT EDIT IT DIRECTLY\n",
            "Edit the source file at src/js/Constants.ts"
          ]
        },
        "src/js/index.ts": {
          "header": [
            "This file has been generated by Babel. DO NOT EDIT IT DIRECTLY\n",
            "Edit the source file at src/js/index.ts"
          ]
        },
        "src/js/RmxAudioPlayer.ts": {
          "header": [
            "This file has been generated by Babel. DO NOT EDIT IT DIRECTLY\n",
            "Edit the source file at src/js/RmxAudioPlayer.ts"
          ]
        }
      }
    }]
  ]
}