interface Sheetimport { type Sheet } from "https://dotland.deno.dev/x/lume@v2.2.1/deps/sheetjs.ts"; General object representing a Sheet (worksheet or chartsheet) Index Signatures[cell: string]: | CellObject | CellObject[][] | SheetKeys | anyPropertiesoptional!data: CellObject[][]Dense-mode worksheets store data in an array of arrays Cells are accessed with sheet['!data'][R][C] (where R and C are 0-indexed) optional!type: SheetTypeSheet type optional!ref: stringSheet Range (A1-style) optional!margins: MarginInfoPage Margins