[Javascript] Supprimer les entrées dupliquées d’un tableau clé/valeur

Source: Removing elements from an array of objects based on duplicate values of multiple keys

    var arr = [
        { type_id: "3", full_empty:"true", quantity:1},
        { type_id: "3", full_empty:"true", quantity:1},
        { type_id: "9", full_empty:"true", quantity:4},
        { type_id: "9", full_empty:"false", quantity:4},
        { type_id: "9", full_empty:"true", quantity:4},
        { type_id: "9", full_empty:"true", quantity:4},
        { type_id: "9", full_empty:"true", quantity:4}
    ];

    var a = arr.reduce(function (accumulator, current) {
      if (checkIfAlreadyExist(current)) {
        return accumulator
      } else {
        return accumulator.concat([current]);
      }
      
      function checkIfAlreadyExist(currentVal) {
        return accumulator.some(function(item){
          return (item.type_id === currentVal.type_id &&
                  item.full_empty === currentVal.full_empty);
        });
      }
    }, []);
        
    console.log(a);

var arr = [

{ type_id: "3", full_empty:"true", quantity:1},

{ type_id: "9", full_empty:"true", quantity:4},

{ type_id: "9", full_empty:"false", quantity:4},

{ type_id: "9", full_empty:"true", quantity:4},

{ type_id: "9", full_empty:"true", quantity:4}

];

var a = arr.reduce(function (accumulator, current) {

if (checkIfAlreadyExist(current)) {

return accumulator

} else {

return accumulator.concat([current]);

}

function checkIfAlreadyExist(currentVal) {

return accumulator.some(function(item){

return (item.type_id === currentVal.type_id &&

item.full_empty === currentVal.full_empty);

});

}

}, []);

console.log(a);

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[Javascript] Supprimer les entrées dupliquées d’un tableau clé/valeur