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var baseSortedIndex = require('./_baseSortedIndex'),
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    eq = require('./eq');
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/**
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 * This method is like `_.indexOf` except that it performs a binary
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 * search on a sorted `array`.
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 *
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 * @static
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 * @memberOf _
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 * @since 4.0.0
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 * @category Array
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 * @param {Array} array The array to inspect.
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 * @param {*} value The value to search for.
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 * @returns {number} Returns the index of the matched value, else `-1`.
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 * @example
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 *
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 * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
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 * // => 1
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 */
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function sortedIndexOf(array, value) {
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  var length = array == null ? 0 : array.length;
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  if (length) {
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    var index = baseSortedIndex(array, value);
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    if (index < length && eq(array[index], value)) {
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      return index;
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    }
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  }
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  return -1;
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}
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module.exports = sortedIndexOf;
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