Add option --json for machine-readable output

[Zaid-Ajaj]

Running

femto --json
# or
femto --project ./src/App.fsproj --json

Generates JSON report output about the npm dependencies required or missing, I need to think about what exactly is needed and how this JSON should look like. @MangelMaxime Do you have a suggestion?

I was thinking about something like:

{
  "projects": [ 
     { 
        "name": "Fable.DateFunction", 
        "dependencies": [  
            {   
                 "name": "date-fns", 
                 "resolutionStrategy": "min",
                 "required": ">= 1.30.0", 
                 "resolved": "1.30.1",
                 "installed": "1.29.0" ,
                 "packageJsonRange": "^1.28.2",
                 "missing": false
             } 
          ]
      }
   ]
}

[MangelMaxime]

The JSON looks good it as almost all of the info in it.

I would rename missing to actionRequired where it can have the values: none, upgrade, install. Because missing only have 2 states true or false.

I would probably also add downgrade because it's possible that a package is too new. upgrade or downgrade can be determine when we have the resolved version by using Semver to compare the versions.

[Zaid-Ajaj]

Does it matter whether a package is missing, outdated or "too new" because the action will always be: install the package that is resolved based on resolution strategy if installed package is missing or falls outside of the required range

Maybe I am missing something important?

[MangelMaxime]

Maybe I am missing something important?

I don't think you are missing something important.

It's that I find the name of the missing property misleading because it's not accurate. If the package is installed then the package is not missing.

If we the goal is to say if a package is ok or not. Then I would rename the missing property to isOk: true|false or actionRequired: true|false or something like that.