| Input value | `getType()` returns | `get<Type>()` function(s) |
|:------------|:--------------------|:--------------------------|
| `42n`       | `BigInt`            | `isBigInt()`              |
| `42`        | `Number`            | `isNumber()`              |
| `3.14`      | `Number`            | `isNumber()`              |
| `Infinity`  | `Number`            | `isNumber()`              |
| `-Infinity` | `Number`            | `isNumber()`              |
| `NaN`       | `Number`            | `isNumber()`*             |

\* Technically `NaN` is a number, so `getType()` _will_ yield `Number` and `isNumber()` _will_ return `true` for consistency. You would probably be better off using JavaScript's native `isNaN()` or `Number.isNaN()` if that's a concern.