<!-- Public documentation export; not library implementation source. -->
# DatafeedConfiguration

[Integration guide](https://docs.lumencharts.com/charting-library/datafeed/) · [Reference index](https://docs.lumencharts.com/charting-library/api/)

Public contract reference. This declaration describes types and callback shapes; availability is constrained by the linked integration guide and the runtime capability. Legacy product-specific fields are not a promise of implementation.

## exchanges {#exchanges}

```ts
exchanges?: Exchange[];
```

Use the type signature above and the integration guide for the owning capability.

## supported_resolutions {#supported_resolutions}

```ts
supported_resolutions?: ResolutionString[];
```

Use the type signature above and the integration guide for the owning capability.

## units {#units}

```ts
units?: Record<string, Unit[]>;
```

Use the type signature above and the integration guide for the owning capability.

## currency_codes {#currency_codes}

```ts
currency_codes?: (string | CurrencyItem)[];
```

Use the type signature above and the integration guide for the owning capability.

## supports_marks {#supports_marks}

```ts
supports_marks?: boolean;
```

Use the type signature above and the integration guide for the owning capability.

## supports_time {#supports_time}

```ts
supports_time?: boolean;
```

Use the type signature above and the integration guide for the owning capability.

## supports_timescale_marks {#supports_timescale_marks}

```ts
supports_timescale_marks?: boolean;
```

Use the type signature above and the integration guide for the owning capability.

## symbols_types {#symbols_types}

```ts
symbols_types?: DatafeedSymbolType[];
```

Use the type signature above and the integration guide for the owning capability.

## symbols_grouping {#symbols_grouping}

```ts
symbols_grouping?: Record<string, string>;
```

Use the type signature above and the integration guide for the owning capability.

## Related types

- [Exchange](https://docs.lumencharts.com/charting-library/api/Exchange)
- [ResolutionString](https://docs.lumencharts.com/charting-library/api/ResolutionString)
- [Unit](https://docs.lumencharts.com/charting-library/api/Unit)
- [CurrencyItem](https://docs.lumencharts.com/charting-library/api/CurrencyItem)
- [DatafeedSymbolType](https://docs.lumencharts.com/charting-library/api/DatafeedSymbolType)

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Documentation page: https://docs.lumencharts.com/charting-library/api/DatafeedConfiguration