tools/npm_packages/testy/package.json

{
  "name": "testy",
  "version": "0.0.1",
  "bin": {
    "testy": "./index.js"
  },
  "bazelBin": {
    "testy": {
      "additionalAttributes": {
        "configuration_env_vars": "[\"SOME_TEST_ENV\", \"SOME_OTHER_ENV\"]"
      }
    }
  }
}