# Class: AsyncGzip Asynchronous streaming GZIP compression Asynchronous streaming GZIP compression ## Hierarchy * **AsyncGzip** ## Index ### Constructors * [constructor](asyncgzip.md#constructor) ### Properties * [ondata](asyncgzip.md#ondata) * [terminate](asyncgzip.md#terminate) ### Methods * [push](asyncgzip.md#push) ## Constructors ### constructor \+ **new AsyncGzip**(`opts`: [GzipOptions](../interfaces/gzipoptions.md), `cb?`: [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler)): [AsyncGzip](asyncgzip.md) Creates an asynchronous GZIP stream #### Parameters: Name | Type | Description | ------ | ------ | ------ | `opts` | [GzipOptions](../interfaces/gzipoptions.md) | The compression options | `cb?` | [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler) | The callback to call whenever data is deflated | **Returns:** [AsyncGzip](asyncgzip.md) \+ **new AsyncGzip**(`cb?`: [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler)): [AsyncGzip](asyncgzip.md) Creates an asynchronous GZIP stream #### Parameters: Name | Type | Description | ------ | ------ | ------ | `cb?` | [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler) | The callback to call whenever data is deflated | **Returns:** [AsyncGzip](asyncgzip.md) \+ **new AsyncGzip**(`opts`: [GzipOptions](../interfaces/gzipoptions.md), `cb?`: [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler)): [AsyncGzip](asyncgzip.md) Creates an asynchronous GZIP stream #### Parameters: Name | Type | Description | ------ | ------ | ------ | `opts` | [GzipOptions](../interfaces/gzipoptions.md) | The compression options | `cb?` | [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler) | The callback to call whenever data is deflated | **Returns:** [AsyncGzip](asyncgzip.md) \+ **new AsyncGzip**(`cb?`: [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler)): [AsyncGzip](asyncgzip.md) Creates an asynchronous GZIP stream #### Parameters: Name | Type | Description | ------ | ------ | ------ | `cb?` | [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler) | The callback to call whenever data is deflated | **Returns:** [AsyncGzip](asyncgzip.md) ## Properties ### ondata • **ondata**: [AsyncFlateStreamHandler](../README.md#asyncflatestreamhandler) The handler to call whenever data is available The handler to call whenever data is available ___ ### terminate • **terminate**: [AsyncTerminable](../interfaces/asyncterminable.md) A method to terminate the stream's internal worker. Subsequent calls to push() will silently fail. A method to terminate the stream's internal worker. Subsequent calls to push() will silently fail. ## Methods ### push ▸ **push**(`chunk`: Uint8Array, `final?`: boolean): void Pushes a chunk to be GZIPped #### Parameters: Name | Type | Description | ------ | ------ | ------ | `chunk` | Uint8Array | The chunk to push | `final?` | boolean | Whether this is the last chunk | **Returns:** void ▸ **push**(`chunk`: Uint8Array, `final?`: boolean): void Pushes a chunk to be GZIPped #### Parameters: Name | Type | Description | ------ | ------ | ------ | `chunk` | Uint8Array | The chunk to push | `final?` | boolean | Whether this is the last chunk | **Returns:** void