I have two boolean conditions to filter an array. An array will always have 3 items within, and first condition always removes 2nd item, second condition 3rd one. And I successfully filtering it using .filter. But seems my approach a bit dirty, is there any better, clear way to filter?
const firstCondition = true;
const secondCondition = true;
const arrayToFilter: Array<string> = ['firstItem', 'secondItem', 'thirdItem'].filter(
(item, idx) =>
firstCondition && secondCondition
? item
: !firstCondition && secondCondition
? idx !== 1
: !firstCondition && !secondCondition
? idx === 0
: firstCondition && !secondCondition && idx !== 2
);
console.log(arrayToFilter);
Edit: Clarification If Conditions are false they removes items
How about this?
const arrayToFilter: Array<string> = ['firstItem', 'secondItem', 'thirdItem'].filter(
(item, idx) => {
if (!firstCondition && idx === 1) return false
if (!secondCondition && idx === 2) return false
else return true
}
);
try,
....
(item, index) => (
(firstCondition && index !== 1)
|| (secondCondition && index !== 2)
|| true // (!firstCondition && !secondCondition)
)