17 lines
467 B
JavaScript
17 lines
467 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(currentPerson.yearOfBirth, currentPerson.yearOfDeath)
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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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