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andremury/filter-map.ts

Last active April 15, 2025 14:11
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filter-map.ts
export const filterMap = <T = unknown, U = unknown>(
arr: U[],
condition: (item: U, index: number) => boolean,
mapTo: (item: U, index: number) => T,
): T[] => {
const newArray: T[] = [];
for (let i = 0; i < arr.length; i++) {
const item = arr[i];
if (condition(item, i)) {
newArray.push(mapTo(item, i));
}
}
return newArray;
};
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