node-excel-export is a Node.js module designed for generating `.xlsx` files from JavaScript datasets. It takes an array of objects as input along with a JSON-based report specification, allowing for flexible configuration of column headers, data mapping, and cell styling. The current stable version is 1.4.4. While its release cadence appears to be slow, suggesting a mature and largely feature-complete library, it remains functional for its stated purpose. Key differentiators include its ability to apply rich cell styling, dynamically reformat data using renderer functions, and define complex header rows and cell merges directly from a JavaScript configuration. It abstracts away the complexities of the underlying `xlsx` (js-xlsx) library for common export scenarios, providing a simpler API for generating Excel reports on the server side.
npm install node-excel-exportVerified import paths — ran on the pinned version, not inferred.
This quickstart demonstrates how to define styles, create heading rows, specify column structures, and generate an Excel (.xlsx) file from a dataset, saving it to disk.
Use `const excel = require('node-excel-export');` for importing the module in CommonJS environments.Thoroughly test `cellStyle` and `cellFormat` functions with various data inputs to ensure they always return expected values or style objects according to the `xlsx` library's specifications. Always include a fallback or default style.
Verify that all keys defined in the `specification` object (e.g., `customer_name`, `status_id`) correspond precisely to the property names in your `dataset` array of objects.
Ensure you are importing the module using `const excel = require('node-excel-export');` and then calling `excel.buildExport(...)`.Review your `dataset` to confirm it's an `Array<Object>` and your `specification` to ensure all properties like `displayName`, `headerStyle`, and `width` are correctly defined as shown in the documentation.
Double-check the data types in your `dataset`, ensure custom style/format functions return valid output, and confirm `merges` array defines valid row/column ranges without overlaps that could cause structural issues.