How to extend airbnb eslint but with warnings instead of errors?

Approach #1 adjust specific rules in .eslintrc:

{
  "extends": "airbnb"
  "rules": {
    "camelcase": "warn",
    ...
  }
}

see Configuring Rules

Approach #2 adjust eslint-loader to emit warnings instead of errors for all rules:

{
  ...
  loader: "eslint-loader",
  options: {
    emitWarning: true,
  }
}

see Errors and Warning

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