45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
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import _curry2 from "./internal/_curry2.js";
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import _isArray from "./internal/_isArray.js";
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import _map from "./internal/_map.js";
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import _assoc from "./internal/_assoc.js";
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/**
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*
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* Deconstructs an array field from the input documents to output a document for each element.
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* Each output document is the input document with the value of the array field replaced by the element.
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*
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* @func
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* @memberOf R
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* @since v0.28.0
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* @category Object
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* @sig String -> {k: [v]} -> [{k: v}]
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* @param {String} key The key to determine which property of the object should be unwind
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* @param {Object} object The object containing list under property named as key which is to unwind
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* @return {List} A new list of object containing the value of input key having list replaced by each element in the object.
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* @example
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*
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* R.unwind('hobbies', {
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* name: 'alice',
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* hobbies: ['Golf', 'Hacking'],
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* colors: ['red', 'green'],
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* });
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* // [
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* // { name: 'alice', hobbies: 'Golf', colors: ['red', 'green'] },
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* // { name: 'alice', hobbies: 'Hacking', colors: ['red', 'green'] }
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* // ]
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*/
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var unwind =
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/*#__PURE__*/
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_curry2(function (key, object) {
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// If key is not in object or key is not as a list in object
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if (!(key in object && _isArray(object[key]))) {
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return [object];
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} // Map over object[key] which is a list and assoc each element with key
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return _map(function (item) {
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return _assoc(key, item, object);
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}, object[key]);
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});
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export default unwind;
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