Chart.js/babel.config.json

{
  "presets": [
    [
		"@babel/preset-env", {
			"loose": true
		}
	]
  ],
  "plugins": [
    "@babel/plugin-transform-object-assign"
  ],
  "env": {
    "test": {
      "plugins": [
        "istanbul"
      ]
    }
  }
}