How to create an array of object from another array of object with properties

I have this array:

const array = [
 {id: 'firstId'},
 {id: 'SecondId'},
 {id: 'ThirdId'}
]

I want to reach this result:

array = [
{firstId: null},
{SecondId: null},
{ThirdId: null}
]

so I tried:

array.map([key,value] => {key:value});

but I got an array of undefined

>Solution :

One way could be to do something like:

const array = [
  {id: 'firstId'},
  {id: 'SecondId'},
  {id: 'ThirdId'}
];

const res = array.map( (obj) => ({ [obj.id]: null }) );

console.log(res);

Note the parentheses around the arrow function arguments and the parentheses around the curly braces to indicate that the curly braces do not form a block for the function body.