js Object merge duplicate bug All In One

js Object merge duplicate bug All In One

obj1 = {id: 1, name: '1'};
{id: 1, name: "1"}
obj2 = {id: 1, name: '2', recommended: true};
{id: 1, name: "2", recommended: true}

arr1 = [obj1]
[{…}]
arr2 = [obj2]
[{…}]

arr = [...arr1, ...arr2];

0: {id: 1, name: "1"}
1: {id: 1, name: "2", recommended: true}
length: 2
__proto__: Array(0)

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