# Fields

`import { Fields } from "destack:telemetry";`

Telemetry field bag.

```ds title="Fields"
export type Fields = { readonly [key: string]: FieldValue }
```

[language/library/src/telemetry/field.ds:5](https://github.com/destack-sh/destack/blob/main/language/library/src/telemetry/field.ds#L5)