R: Formats the value of the filetype argument

formatFiletype {shinyFiles} | R Documentation

## Formats the value of the filetype argument

### Description

This function is intended to format the filetype argument of `shinySaveButton()` into a json string representation, so that it can be attached to the button.

### Usage

    formatFiletype(filetype)

### Arguments

`filetype` | A named list of file extensions or NULL or NA

### Value

A string describing the input value in json format

[Package shinyFiles version 0.7.1 Index]