30 lines
748 B
JavaScript
30 lines
748 B
JavaScript
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/**
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* An implementation of `_.uniq` optimized for sorted arrays without support
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* for callback shorthands and `this` binding.
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*
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* @private
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* @param {Array} array The array to inspect.
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* @param {Function} [iteratee] The function invoked per iteration.
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* @returns {Array} Returns the new duplicate-value-free array.
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*/
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function sortedUniq(array, iteratee) {
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var seen,
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index = -1,
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length = array.length,
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resIndex = -1,
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result = [];
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while (++index < length) {
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var value = array[index],
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computed = iteratee ? iteratee(value, index, array) : value;
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if (!index || seen !== computed) {
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seen = computed;
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result[++resIndex] = value;
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}
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}
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return result;
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}
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module.exports = sortedUniq;
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