How to transform an Excel file into a JSON one?

• Install NodeJS so the npm executable is available in the console
• Open PowerShell or cmd.exe in Administrative mode
• Install Windows Build Tools for NodeJS (See https://github.com/felixrieseberg/windows-build-tools/issues/56 for more info), including python executable in the path

npm --add-python-to-path='true' --debug install --global windows-build-tools

• Install latest version of Libxmljs library

npm i libxmljs

• Install excel-as-json library

npm install excel-as-json --save-dev

• Change directory to the one where the file 'excel-to-json.js' is located together with data.xlsx
• Execute 'excel-to-json.js'

node .\excel-to-json.js

• If everything went well, you should now see as many .json files as sheets exist in the Excel file