[**brk-client**](../README.md) *** [brk-client](../globals.md) / DateRangeBuilder # Interface: DateRangeBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1419](https://github.com/bitcoinresearchkit/brk/blob/8bc993ecebee68170d873d232b25f3b1f2d71378/modules/brk-client/index.js#L1419) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onUpdate?`) => `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1420](https://github.com/bitcoinresearchkit/brk/blob/8bc993ecebee68170d873d232b25f3b1f2d71378/modules/brk-client/index.js#L1420) 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:1421](https://github.com/bitcoinresearchkit/brk/blob/8bc993ecebee68170d873d232b25f3b1f2d71378/modules/brk-client/index.js#L1421) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`DateThenable`](../type-aliases/DateThenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1422](https://github.com/bitcoinresearchkit/brk/blob/8bc993ecebee68170d873d232b25f3b1f2d71378/modules/brk-client/index.js#L1422) Thenable