Decompress Run-Length Encoded List LeetCode solution in JavaScript

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var decompressRLElist = function (nums) {
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  let solution = [];
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  for (let i = 0; i < nums.length; i += 2) {
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    for (let j = 0; j < nums[i]; j++) {
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      solution.push(nums[i + 1]);
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    }
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  }
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  return solution;
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};