Get index of closest value in sorted array.
Use binarySearch, if index of value is needed.```javascript const binarySearch = require('array-binarysearch.closest'); // binarySearch(, , compare function, this, begin=0, end) // -> binarySearch(21, 42, 91, 91, 40); // 1 binarySearch(21, 42, 91, 91, 42, null, null, 2); // 2 binarySearch(21, 42, 91, 91, 92, null, null, 2, 4); // 4 binarySearch(21, 42, 91, 91, 40, (a, b) => a===b? 0:(a'G', 'KG', 'KG', 'MG', 'g', (a, b, i) => a.toLowerCase().localeCompare(b.toLowerCase()), null, 1); // 1 binarySearch('G', 'KG', 'KG', 'MG', 'KG', (a, b, i, arr) => a.localeCompare(b), null, 1, 4); // 2 ```
With extra-array try Array.binarySearch.closest() instead.
