openapi-typescript-codegen/babel.config.json

{
    "presets": [
        [
            "@babel/preset-env",
            {
                "targets": {
                    "node": "12"
                }
            }
        ],
        [
            "@babel/preset-typescript",
            {
                "onlyRemoveTypeImports": true
            }
        ]
    ]
}