@eristack/spreadsheet-render/dist/index.js

Declarative workbook model and xlsx/csv render drivers — ExcelJS/SheetJS in app or adapter

// src/core/renderer.ts
function escapeCsvCell(value) {
  if (/[",\n\r]/.test(value)) {
    return `"${value.replaceAll('"', '""')}"`;
  }
  return value;
}
function workbookToCsv(workbook) {
  const sheet = workbook.sheets[0];
  if (!sheet) return "";
  const header = sheet.columns.map((c) => escapeCsvCell(c.header)).join(",");
  const body = sheet.rows.map(
    (row) => sheet.columns.map((c) => escapeCsvCell(row[c.key] ?? "")).join(",")
  );
  return [header, ...body].join("\n");
}
function createSpreadsheetRenderer(driver) {
  return {
    renderWorkbook(workbook, format) {
      return driver.renderWorkbook(workbook, format);
    }
  };
}
function createStubSpreadsheetDriver() {
  return {
    async renderWorkbook(workbook, format) {
      if (format === "csv") {
        const text = workbookToCsv(workbook);
        return {
          bytes: new TextEncoder().encode(text),
          contentType: "text/csv; charset=utf-8"
        };
      }
      const marker = `PK-stub-xlsx:${workbook.sheets.length}`;
      return {
        bytes: new TextEncoder().encode(marker),
        contentType: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      };
    }
  };
}

// src/core/workbook.ts
function workbookFromRows(sheetName, columns, rows) {
  const sheetRows = rows.map((cells) => {
    const record = {};
    columns.forEach((col, index) => {
      record[col.key] = cells[index] ?? "";
    });
    return record;
  });
  const sheet = { name: sheetName, columns, rows: sheetRows };
  return { sheets: [sheet] };
}
export {
  createSpreadsheetRenderer,
  createStubSpreadsheetDriver,
  workbookFromRows
};
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