[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [promiseRejectFalsey](./rc-js-util.promiserejectfalsey.md) ## promiseRejectFalsey() function Returns a Promise of rejection with the supplied error if the `value` is falsy. **Signature:** ```typescript export declare function promiseRejectFalsey(value: Promise | boolean, error: unknown): Promise; ``` ## Parameters

Parameter	Type	Description
value	Promise<boolean> \| boolean
error	unknown

**Returns:** Promise<void> ## Remarks See [promiseRejectFalsey()](./rc-js-util.promiserejectfalsey.md).