Get values from variable contents using PowerShell for code parsing

I have parsed the content of an API call to a variable $a.(Content below) and I would like to only parse out the list of packages which are under "dependencies". Is there are way to filter for only the dependencies using powershell?.

{
"name": "1package",
"version": "1.0.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
    "@babel/runtime": {
        "version": "7",
        "resolved": "https://registry.npmjs.org",
        "integrity": "***",
        "requires": {
            "regenerator-runtime": "^0.13.4"
        }
    },
    "@cloud": {
        "version": "2",
        "resolved": "https://registry.npmjs.org/",
        "integrity": "***"
    },
    "@cloudnative/health-connect": {
        "version": "2",
        "resolved": "https://registry.npmjs.org/@***.tgz",
        "integrity": "***",
        "requires": {
            "@cloudnative/health": "^2.1.1"
        }
    },

So I just want to parse out a list having

babel/runtime version 7
cloud version 2
cloudnative/health-connect version 2

Solution

By accessing the PSObject.Properties of each object we can get the dependency "Name" and the desired values of the properties "Version" and "Resolved". Using a calculated property with Select-Object we can construct a new object.

Note, this code assumes you have already used ConvertFrom-Json over your Json string and, the object is stored in the $json variable.

$json.dependencies.PSObject.Properties | Select-Object Name,
    @{
        Name = 'Version'
        Expression = { $_.Value.Version }
    }, @{
        Name = 'Resolved'
        Expression = { $_.Value.Resolved }
    }

Output

Name                        Version Resolved
----                        ------- --------
@babel/runtime              7       https://registry.npmjs.org
@cloud                      2       https://registry.npmjs.org/
@cloudnative/health-connect 2       https://registry.npmjs.org/@***.tgz