[**brk-client**](../README.md) *** [brk-client](../globals.md) / DateRangeBuilder # Interface: DateRangeBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1401](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L1401) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onUpdate?`) => `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1402](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L1402) 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:1403](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L1403) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`DateThenable`](../type-aliases/DateThenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1404](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L1404) Thenable