Fix placement of formulas & styles in XLSX

src/routes/variables/[variable]/xlsx/+page.svelte

@@ -227,7 +227,7 @@
     const tableByEntityKey: { [key: string]: Array<Array<unknown>> } = {} // Array of rows
     for (const variable of variables) {
       const columnIndex = (columnIndexByEntityKey[variable.entity] =
-        (columnIndexByEntityKey[variable.entity] ?? 0) + 1)
+        (columnIndexByEntityKey[variable.entity] ?? -1) + 1)
       const values = valuesByCalculationNameByVariableName[variable.name].law
       let table = tableByEntityKey[variable.entity]
       if (table === undefined) {
@@ -235,7 +235,7 @@
       }
       for (const [rowIndex, cell] of [variable.name, ...values].entries()) {
         let row = table[rowIndex]
-        if (row === undefined) {
+        if (rowIndex === table.length) {
           row = []
           table.push(row)
         }
@@ -265,8 +265,7 @@
                 e: { c: columnIndex, r: table.length - 1 },
               })
               // TODO: Improve type detection (for date, etc).
-              const sampleCell = table[1][0]
-              const sampleCellType = typeof sampleCell
+              const sampleCellType = typeof values[0]
               const t =
                 sampleCellType === "boolean"
                   ? "b"
@@ -310,9 +309,9 @@
 
       XLSX.utils.book_append_sheet(workbook, worksheet, entityKey)
 
-      for (const [columnIndex, variableName] of (
-        table[0] as string[]
-      ).entries()) {
+      for (const [columnIndex, cell] of table[0].entries()) {
+        const variableName =
+          typeof cell === "string" ? cell : (cell as { v: string }).v
         const vectorRange = XLSX.utils.encode_range({
           s: { c: columnIndex, r: 1 },
           e: { c: columnIndex, r: table.length - 1 },
@@ -328,7 +327,7 @@
       }
     }
 
-    XLSX.writeFileXLSX(workbook, "leximpact.xlsx", { compression: true })
+    XLSX.writeFile(workbook, "leximpact.xlsx", { compression: true })
   }
 
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