[**brk-client**](../README.md) *** [brk-client](../globals.md) / RangeBuilder # Interface: RangeBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1718](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1718) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onValue?`) => `Promise`\<[`SeriesData`](../type-aliases/SeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1719](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1719) 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:1720](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1720) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`Thenable`](../type-aliases/Thenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1721](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1721) Thenable