module.exports = function (api) {
	api.cache(true);
	const presets = [
	  [
		'@babel/preset-env',
		{
		  corejs : {
			version : "3",
			proposals : true
		  },
		  useBuiltIns: false,
		  targets: {
			browsers: [
			  "edge >= 16",
			  "safari >= 9",
			  "firefox >= 57",
			  "ie >= 11",
			  "ios >= 9",
			  "chrome >= 49"
			]
		  }
		}
	  ]
	];
	const plugins= [
		["@babel/plugin-proposal-decorators", { decoratorsBeforeExport: true }],
		["@babel/plugin-proposal-class-properties", { "loose": true }]
	];
	return {
	  presets,
	  plugins
	}
  }