How to make it working with babel?

[kapilpipaliya]

my babel.config.json file:

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

when i do: const user = Contacts.findOne(param.user); It returns result from different collection. and values are undefined.