[**brk-client**](../README.md) *** [brk-client](../globals.md) / DateRangeBuilder # Interface: DateRangeBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1426](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L1426) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onUpdate?`) => `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1427](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L1427) Fetch the range #### Parameters ##### onUpdate? (`value`) => `void` #### Returns `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\> *** ### fetchCsv > **fetchCsv**: () => `Promise`\<`string`\> Defined in: [Developer/brk/modules/brk-client/index.js:1428](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L1428) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`DateThenable`](../type-aliases/DateThenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1429](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L1429) Thenable