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45 lines
1.3 KiB
TypeScript
45 lines
1.3 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/uniqWith.js
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import _includesWith from './internal/_includesWith.js';
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import _curry2 from './internal/_curry2.js';
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/**
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* Returns a new list containing only one copy of each element in the original
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* list, based upon the value returned by applying the supplied predicate to
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* two list elements. Prefers the first item if two items compare equal based
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* on the predicate.
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*
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* @func
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* @memberOf R
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* @since v0.2.0
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* @category List
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* @sig ((a, a) -> Boolean) -> [a] -> [a]
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* @param {Function} pred A predicate used to test whether two items are equal.
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* @param {Array} list The array to consider.
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* @return {Array} The list of unique items.
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* @example
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*
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* const strEq = R.eqBy(String);
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* R.uniqWith(strEq)([1, '1', 2, 1]); //=> [1, 2]
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* R.uniqWith(strEq)([{}, {}]); //=> [{}]
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* R.uniqWith(strEq)([1, '1', 1]); //=> [1]
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* R.uniqWith(strEq)(['1', 1, 1]); //=> ['1']
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*/
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var uniqWith = _curry2(function uniqWith(pred, list) {
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var idx = 0;
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var len = list.length;
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var result = [];
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var item;
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while (idx < len) {
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item = list[idx];
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if (!_includesWith(pred, item, result)) {
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result[result.length] = item;
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}
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idx += 1;
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}
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return result;
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});
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export default uniqWith;
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