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1 | import reduceBy from "./reduceBy.js";
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2 | /**
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3 | * Given a function that generates a key, turns a list of objects into an
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4 | * object indexing the objects by the given key. Note that if multiple
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5 | * objects generate the same value for the indexing key only the last value
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6 | * will be included in the generated object.
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7 | *
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8 | * Acts as a transducer if a transformer is given in list position.
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9 | *
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10 | * @func
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11 | * @memberOf R
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12 | * @since v0.19.0
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13 | * @category List
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14 | * @typedefn Idx = String | Int | Symbol
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15 | * @sig Idx a => (b -> a) -> [b] -> {a: b}
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16 | * @param {Function} fn Function :: a -> Idx
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17 | * @param {Array} array The array of objects to index
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18 | * @return {Object} An object indexing each array element by the given property.
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19 | * @see R.groupBy
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20 | * @example
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21 | *
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22 | * const list = [{id: 'xyz', title: 'A'}, {id: 'abc', title: 'B'}];
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23 | * R.indexBy(R.prop('id'), list);
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24 | * //=> {abc: {id: 'abc', title: 'B'}, xyz: {id: 'xyz', title: 'A'}}
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25 | */
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26 |
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27 | var indexBy =
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28 | /*#__PURE__*/
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29 | reduceBy(function (acc, elem) {
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30 | return elem;
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31 | }, null);
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32 | export default indexBy; |
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