I just thought the same thing.
I would actually want to write a markdown report, but I think it wouldn't be to difficult to have both options.
I wonder if a PR for that has a chance of being merged?

I wonder if a PR for that has a chance of being merged?

It has 👍

A quick fix is to simply run npm-check > c:\output.txt but a more structured format would be nice :-)

@stigperez I'm on unix and just tried that (again) and it was not working as expected for me, I guess the command is expecting since the command is expecting an interactive terminal, so it wouldn't write all the data into the file since ... maybe my shell was to small? so what do I do if I have more dependencies that haven an update then do fit on my screen...?

Also it doesn't end so I need to Ctrl+C to stop the process. Below is the content of the file after doing so:

�[?25l�[?25h�[?25l�[?25h�[?25l? Choose which packages to update. (Press <space> to select)
  
 Patch Update Backwards-compatible bug fixes.
❯◯ @types/hammerjs devDep                2.0.35   ❯  2.0.36   https://github.com
/DefinitelyTyped/DefinitelyTyped
 ◯ @types/i18next devDep                 8.4.4    ❯  8.4.5    https://github.com
/DefinitelyTyped/DefinitelyTyped
 ◯ @types/node devDep                    10.9.2   ❯  10.9.4   https://github.com
/DefinitelyTyped/DefinitelyTyped
 ◯ @types/react devDep                   16.4.12  ❯  16.4.14  https://github.com
/DefinitelyTyped/DefinitelyTyped
 ◯ @types/react-redux devDep             6.0.6    ❯  6.0.8    https://github.com
/DefinitelyTyped/DefinitelyTyped
(Move up and down to reveal more choices)�[41D�[41C

(moving the cursor up and down appends "the whole terminal screen" to the file...)

+1 on markdown (or as an intermediate step json) support. we post the result of npm-check automatically to Github Enterprise, which basically works, but i would love to have some more customizing functions for the output, which is hard to do in its current form ..