19 lines
536 B
JavaScript
19 lines
536 B
JavaScript
const findTheOldest = function (array) {
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return array.reduce((oldest, currentPerson) => {
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const oldestAge = getAge(oldest.yearOfBirth, oldest.yearOfDeath);
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const currentAge = getAge(
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currentPerson.yearOfBirth,
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currentPerson.yearOfDeath
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);
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return oldestAge < currentAge ? currentPerson : oldest;
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});
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};
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const getAge = function (birth, death) {
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if (!death) {
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death = new Date().getFullYear();
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}
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return death - birth;
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};
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module.exports = findTheOldest;
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