The documentation states that the default indentation level for SwitchCase is zero:
https://github.com/typescript-eslint/typescript-eslint/blame/61e6385c65b147a5a8b4caa2f3241e5a92c9b1bf/packages/eslint-plugin/docs/rules/indent.md#L77

The default for ESLint is also zero:
https://eslint.org/docs/rules/indent#options

In practice, the level is actually 1. Other than the documentation being incorrect, I'd argue that turning ESLint's indent off and setting @typescript-eslint/indent to error should not produce new violations on code covered by both rules.

Repro

{
  "rules": {
    "indent": "off",
    "@typescript-eslint/indent": "error"
  }
}

switch (typeof true) {
case "string":
    throw new Error("never");
}

Expected Result
Does not raise a violation.

Actual Result
Raises a violation.

Additional Info
Can be worked around by explicitly setting the SwitchCase level. Unfortunately this requires being explicit about the indentation depth also:

{
  "rules": {
    "indent": "off",
    "@typescript-eslint/indent": ["error", 4, {
      "SwitchCase": 0
    }]
  }
}

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