Searching array key with reserved keyword

I have created array as below

["lists", { "getByTitle": "CardOperation" }, "items", { "filter": "Id eq 1" }, { "select": ["Title", "CustomerAge"] }];

Now one key as filter I want find it to know it is exists in array but as it is reserved keyword i cannot search it

I tired

array.filter //not working

array["filter"] // not working

what should i do in this case, I am trying to find out if the array has an object with a key of filter at any index

>Solution :

This is probably what you want:

const hasObject = myArray.find(obj => typeof obj === 'object' && obj !== null && obj["filter"]) ? true : false;

This loops through the array and returns true if an object with key "filter" exists, or otherwise, returns false.