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| 1 2 3 4 5 6 7 8 9 10 11 12 13 | 5x 8x 1x 3x 3x 1x 2x | import {Predicate} from 'fnxt/fnxt-types';
export const findIndex = <T>(fn: Predicate<T>) => (array: T[]): number => {
if (array.length === 0) {
throw Error('Array empty');
}
const number = array.findIndex(fn);
if(number < 0){
throw Error('Not found')
}
return number;
};
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