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{  "presets": [    [      "@babel/preset-env",      {        "useBuiltIns": "usage",        "loose": true,        "targets": {          "node": "12"        },        "corejs": 3      }    ],    "@babel/typescript"  ],  "plugins": [    "babel-plugin-transform-typescript-metadata",    ["@babel/plugin-proposal-decorators", {      "legacy": true    }],    ["@babel/proposal-class-properties", {      "loose": true    }],    "@babel/proposal-object-rest-spread"  ]}