Write a Program to Find Minimum Common Value

# 2540. Minimum Common Value

Given two integer arrays nums1 and nums2, sorted in non-decreasing order, return the minimum integer common to both arrays. If there is no common integer amongst nums1 and nums2, return -1.

Note that an integer is said to be common to nums1 and nums2 if both arrays have at least one occurrence of that integer.

### Example 1:
```
Input: nums1 = [1,2,3], nums2 = [2,4]
Output: 2
Explanation: The smallest element common to both arrays is 2, so we return 2.
```

### Example 2:
```
Input: nums1 = [1,2,3,6], nums2 = [2,3,4,5]
Output: 2
Explanation: There are two common elements in the array 2 and 3 out of which 2 is the smallest, so 2 is returned.
 ```

Constraints:
```
1 <= nums1.length, nums2.length <= 105
1 <= nums1[i], nums2[j] <= 109
Both nums1 and nums2 are sorted in non-decreasing order.
```

/**
 * @param {number[]} nums1
 * @param {number[]} nums2
 * @return {number}
 */
 var getCommon = function(nums1, nums2) {
    const set = new Set(nums1);
    for (let i = 0; i < nums2.length; i++) {  
        if (set.has(nums2[i])) {
            return nums2[i];
        }
    }
    return -1;
};