Quiero filtrar los elementos de matriz repetidos, según algunos campos. Por ejemplo:

 [ {id: 1, type: "A", active: true}, {id: 2, type: "A", active: true}, {id: 3, type: "B", active: true}, {id: 4, type: "B", active: false}, {id: 5, type: "C", active: true}, {id: 6, type: "C", active: false}, {id: 7, type: "C", active: false}, {id: 8, type: "C", active: false}, ]

El resultado debería ser:

 [ {type: "A", active: true}, {type: "B", active: true}, {type: "B", active: false}, {type: "C", active: true}, {type: "C", active: false} ]

Al igual que, en SQL:

 SELECT DISTINCT type, active FROM sourceArray