[Home](./index.md) > [@empathyco/x-components](./x-components.md) > [filter](./x-components.filter.md) ## filter() function Creates a [Wire](./x-components.wire.md) that is only executed whenever the condition in the filterFn is true. **Signature:** ```typescript export declare function filter(wire: Wire, filterFn: (parameters: WireParams) => boolean): Wire; ``` ## Parameters

Parameter	Type	Description
wire	[Wire](./x-components.wire.md)<Payload>	The wire to filter.
filterFn	(parameters: [WireParams](./x-components.wireparams.md)<Payload>) => boolean	A function which must return a boolean and that will be executed every time the wire is called.

**Returns:** [Wire](./x-components.wire.md)<Payload> The Wire function filter.