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sameParityFilter.js
Implement and export as default a function that takes an array as input and returns a new one consisting of elements that have the same parity as the first element of the input array.
Examples
sameParity([-1, 0, 1, -3, 10, -2]); // [-1, 1, -3]
sameParity([2, 0, 1, -3, 10, -2]); // [2, 0, 10, -2]
sameParity([]); // []
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