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-### indexesOf
-
-Returns an array of indexes at which the `val` occurs in `arr`. If it occurs only once return the `index` and if it never occurs returns `-1`
-
-``` js
-const indexesOf = (arr, val) => {
-    let indexes = [], i;
-    for(i = 0; i < arr.length; i++)
-        if (arr[i] === val)
-            indexes.push(i);
-    return indexes.length === 0 ? -1 : indexes.length === 1 indexes.pop() : indexes
-}
-```