Suppose I have a list of objects like this:
let b = [
{
name: "test1",
connectedTo: "",
},
{
name: "test1",
connectedTo: "test1.test2.test3"
},
{
name: "test2",
connectedTo: "",
},
{
name: "test3",
connectedTo: "",
}
]
I want to get elements without duplicates name and also if there are duplicates take one without empty connectedTo. So from example above the result that I expect is:
let result = [
{
name: "test1",
connectedTo: "test1.test2.test3"
},
{
name: "test2",
connectedTo: "",
},
{
name: "test3",
connectedTo: "",
}
]
Here's an approach utilizing Array#reduce function:
let b = [
{
name: "test1",
connectedTo: "",
},
{
name: "test1",
connectedTo: "test1.test2.test3"
},
{
name: "test2",
connectedTo: "",
},
{
name: "test3",
connectedTo: "test1.test2",
},
{
name: "test3",
connectedTo: "",
}
];
const result = Object.values(b.reduce((acc, cur) => {
if(!acc[cur.name] || !acc[cur.name].connectedTo)
acc[cur.name] = cur;
return acc;
}, {}));
console.log(result);