fsharp-notebook is a lightweight visualization tool to assist during data exploration and prototyping. In combination with ionide, VSCode becomes a very capable F# IDE for data science.

• Register "rich output" printers to FSI
• Render SVG plots, HTML fragments, Markdown and text cells
• Export Notebooks to HTML

• F# Notebook: Open Panel
• F# Notebook: Export Panel
• F# Notebook: Clear Panel

• fsharpnotebook.styles: A list of CSS style sheets to use in notebooks.
• fsharpnotebook.exportStyles: A list of CSS style sheets to use when exporting notebooks.

Locate where fsharp-notebook extension is installed:

• Windows %USERPROFILE%\.vscode\extensions\pablobelin.fsharp-notebook-*
• macOS ~/.vscode/extensions/pablobelin.fsharp-notebook-*
• Linux ~/.vscode/extensions/pablobelin.fsharp-notebook-*

And edit VSCode settings.json:

"FSharp.fsiExtraParameters": ["--load:path/to/extension/scripts/Notebook.fsx"]

open Notebook

let md = Markdown """
# Hello, Markdown!
"""

fsi.AddPrinter(fun (data : YourType) ->
    ... // Format to string
    |> SVG // or HTML or Markdown or Text
    |> printerNotebook
)