[excel] How to create an Excel File with Nodejs?

You should check ExcelJS

Works with CSV and XLSX formats.

Great for reading/writing XLSX streams. I've used it to stream an XLSX download to an Express response object, basically like this:

app.get('/some/route', function(req, res) {
  res.writeHead(200, {
    'Content-Disposition': 'attachment; filename="file.xlsx"',
    'Transfer-Encoding': 'chunked',
    'Content-Type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
  })
  var workbook = new Excel.stream.xlsx.WorkbookWriter({ stream: res })
  var worksheet = workbook.addWorksheet('some-worksheet')
  worksheet.addRow(['foo', 'bar']).commit()
  worksheet.commit()
  workbook.commit()
}

Works great for large files, performs much better than excel4node (got huge memory usage & Node process "out of memory" crash after nearly 5 minutes for a file containing 4 million cells in 20 sheets) since its streaming capabilities are much more limited (does not allows to "commit()" data to retrieve chunks as soon as they can be generated)

See also this SO answer.

Examples related to excel

Python: Pandas pd.read_excel giving ImportError: Install xlrd >= 0.9.0 for Excel support Converting unix time into date-time via excel How to increment a letter N times per iteration and store in an array? 'Microsoft.ACE.OLEDB.16.0' provider is not registered on the local machine. (System.Data) How to import an Excel file into SQL Server? Copy filtered data to another sheet using VBA Better way to find last used row Could pandas use column as index? Check if a value is in an array or not with Excel VBA How to sort dates from Oldest to Newest in Excel?

Examples related to node.js

Hide Signs that Meteor.js was Used Querying date field in MongoDB with Mongoose SyntaxError: Cannot use import statement outside a module Server Discovery And Monitoring engine is deprecated How to fix ReferenceError: primordials is not defined in node UnhandledPromiseRejectionWarning: This error originated either by throwing inside of an async function without a catch block dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.62.dylib error running php after installing node with brew on Mac internal/modules/cjs/loader.js:582 throw err DeprecationWarning: Buffer() is deprecated due to security and usability issues when I move my script to another server Please run `npm cache clean`

Examples related to file-io

Python, Pandas : write content of DataFrame into text File Saving response from Requests to file How to while loop until the end of a file in Python without checking for empty line? Getting "java.nio.file.AccessDeniedException" when trying to write to a folder How do I add a resources folder to my Java project in Eclipse Read and write a String from text file Python Pandas: How to read only first n rows of CSV files in? Open files in 'rt' and 'wt' modes How to write to a file without overwriting current contents? Write objects into file with Node.js

Examples related to export-to-excel

Export from pandas to_excel without row names (index)? How to export dataGridView data Instantly to Excel on button click? How to export a CSV to Excel using Powershell How to create an Excel File with Nodejs? Download Excel file via AJAX MVC Export data to Excel file with ASP.NET MVC 4 C# is rendering into view Saving results with headers in Sql Server Management Studio phpexcel to download Export SQL query data to Excel How can I export tables to Excel from a webpage

Examples related to npm

What does 'x packages are looking for funding' mean when running `npm install`? error: This is probably not a problem with npm. There is likely additional logging output above Module not found: Error: Can't resolve 'core-js/es6' Browserslist: caniuse-lite is outdated. Please run next command `npm update caniuse-lite browserslist` ERROR in The Angular Compiler requires TypeScript >=3.1.1 and <3.2.0 but 3.2.1 was found instead DeprecationWarning: Buffer() is deprecated due to security and usability issues when I move my script to another server Please run `npm cache clean` What exactly is the 'react-scripts start' command? On npm install: Unhandled rejection Error: EACCES: permission denied Difference between npx and npm?