81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
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import _curry3 from "./internal/_curry3.js";
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import _isArray from "./internal/_isArray.js";
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import _isString from "./internal/_isString.js";
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import clone from "./clone.js";
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var swapObject = function (indexA, indexB, o) {
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var copy = clone(o);
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var properties = Object.getOwnPropertyNames(copy);
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if (properties.includes(indexA) && properties.includes(indexB)) {
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var tmp = copy[indexA];
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copy[indexA] = copy[indexB];
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copy[indexB] = tmp;
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}
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return copy;
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};
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var swapList = function (indexA, indexB, list) {
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var length = list.length;
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var result = list.slice();
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var positiveIndexA = indexA < 0 ? length + indexA : indexA;
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var positiveIndexB = indexB < 0 ? length + indexB : indexB;
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var positiveMin = Math.min(positiveIndexA, positiveIndexB);
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var positiveMax = Math.max(positiveIndexA, positiveIndexB);
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if (positiveIndexA < 0 || positiveIndexA > length) {
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return result;
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}
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if (positiveIndexB < 0 || positiveIndexB > length) {
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return result;
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}
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if (positiveIndexA === positiveIndexB) {
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return result;
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}
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result = [].concat(result.slice(0, positiveMin)).concat([result[positiveMax]]).concat(result.slice(positiveMin + 1, positiveMax)).concat([result[positiveMin]]).concat(result.slice(positiveMax + 1, length));
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return result;
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};
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var swapString = function (indexA, indexB, s) {
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var result = swapList(indexA, indexB, s);
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return _isArray(result) ? result.join('') : result;
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};
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/**
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* Swap an item, at index `indexA` with another item, at index `indexB`, in an object or a list of elements.
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* A new result will be created containing the new elements order.
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*
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* @func
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* @memberOf R
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* @since v0.29.0
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* @category List
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* @sig Number -> Number -> [a] -> [a]
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* @param {Number|string|Object} indexA The first index
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* @param {Number|string|Object} indexB The second index
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* @param {Array|Object} o Either the object or list which will serve to realise the swap
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* @return {Array|Object} The new object or list reordered
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* @example
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*
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* R.swap(0, 2, ['a', 'b', 'c', 'd', 'e', 'f']); //=> ['c', 'b', 'a', 'd', 'e', 'f']
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* R.swap(-1, 0, ['a', 'b', 'c', 'd', 'e', 'f']); //=> ['f', 'b', 'c', 'd', 'e', 'a']
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* R.swap('a', 'b', {a: 1, b: 2}); //=> {a: 2, b: 1}
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* R.swap(0, 2, 'foo'); //=> 'oof'
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*/
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var swap =
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/*#__PURE__*/
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_curry3(function (indexA, indexB, o) {
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if (_isArray(o)) {
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return swapList(indexA, indexB, o);
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} else if (_isString(o)) {
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return swapString(indexA, indexB, o);
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} else {
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return swapObject(indexA, indexB, o);
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}
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});
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export default swap;
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