[**brk-client**](../README.md) *** [brk-client](../globals.md) / RangeBuilder # Interface: RangeBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1656](https://github.com/bitcoinresearchkit/brk/blob/25b226856307047c5c10a075ec57219ca9987c38/modules/brk-client/index.js#L1656) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onValue?`) => `Promise`\<[`SeriesData`](../type-aliases/SeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1657](https://github.com/bitcoinresearchkit/brk/blob/25b226856307047c5c10a075ec57219ca9987c38/modules/brk-client/index.js#L1657) Fetch the range #### Parameters ##### onValue? (`value`) => `void` #### Returns `Promise`\<[`SeriesData`](../type-aliases/SeriesData.md)\<`T`\>\> *** ### fetchCsv > **fetchCsv**: () => `Promise`\<`string`\> Defined in: [Developer/brk/modules/brk-client/index.js:1658](https://github.com/bitcoinresearchkit/brk/blob/25b226856307047c5c10a075ec57219ca9987c38/modules/brk-client/index.js#L1658) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`Thenable`](../type-aliases/Thenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1659](https://github.com/bitcoinresearchkit/brk/blob/25b226856307047c5c10a075ec57219ca9987c38/modules/brk-client/index.js#L1659) Thenable