.babelrc

{
    "env":{
        "test": {
            "presets":[
                [
                    "@babel/preset-env",
                    {
                        "targets": {
                            "node": "current"
                        }
                    }
                ],
                [
                    "@babel/preset-react"
                ],
                [
                    "@babel/preset-typescript",
                    {
                        "isTSX": true,
                        "allExtensions": true
                    }
                ]
            ],
            "plugins": [
                [
                    "@babel/plugin-proposal-decorators",
                    {
                        "legacy": true
                    }
                ],
                [
                    "@babel/plugin-proposal-class-properties",
                    {
                        "loose": true
                    }
                ],
                [
                    "@babel/plugin-transform-runtime"
                ]
            ]
        }
    }
}