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ES6 way... Try and Catch may not necessary as it's already in main function.
class Calculator { power(n, p) { if (n < 0 || p < 0) { throw('n and p should be non-negative'); } else { return Math.pow(n, p); } } }
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Day 17: More Exceptions
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ES6 way... Try and Catch may not necessary as it's already in main function.