Add a variable from array of objects and combine them

I want to add a variable from array of objects and combine them.

Example data :

    const item = [{
                "act": "Q",
                "line": 1,
                "qty": 6,
                "type": 00
},
{
                "act": "Q",
                "line": 1,
                "qty": 6,
                "type": 00
},
{
                "act": "Q",
                "line": 2,
                "qty": 6,
                "type": 00
},
{
                "act": "Q",
                "line": 2,
                "qty": 4,
                "type": 00
}]

I want to check if act is Q and type is 00 then get the output with line and sum of qty for the line.

    [{
                "line": 1,
                "qty": 12,
},
{
                "line": 2,
                "qty": 10,
}]