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# Interface: UnderlyingSink<W\>

[internal](../modules/internal-10.md).UnderlyingSink

## Type parameters

| Name | Type |
| :------ | :------ |
| `W` | `any` |

## Properties

### abort

• `Optional` **abort**: [`UnderlyingSinkAbortCallback`](internal-10.UnderlyingSinkAbortCallback.md)

#### Defined in

docs-util/node_modules/typescript/lib/lib.dom.d.ts:1953

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### close

• `Optional` **close**: [`UnderlyingSinkCloseCallback`](internal-10.UnderlyingSinkCloseCallback.md)

#### Defined in

docs-util/node_modules/typescript/lib/lib.dom.d.ts:1954

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### start

• `Optional` **start**: [`UnderlyingSinkStartCallback`](internal-10.UnderlyingSinkStartCallback.md)

#### Defined in

docs-util/node_modules/typescript/lib/lib.dom.d.ts:1955

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### type

• `Optional` **type**: `undefined`

#### Defined in

docs-util/node_modules/typescript/lib/lib.dom.d.ts:1956

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### write

• `Optional` **write**: [`UnderlyingSinkWriteCallback`](internal-10.UnderlyingSinkWriteCallback.md)<`W`\>

#### Defined in

docs-util/node_modules/typescript/lib/lib.dom.d.ts:1957