1 | import _clone from "./internal/_clone.js";
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2 | import _curry3 from "./internal/_curry3.js";
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3 | import _isTransformer from "./internal/_isTransformer.js";
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4 | import _reduce from "./internal/_reduce.js";
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5 | import _stepCat from "./internal/_stepCat.js";
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6 | /**
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7 | * Transforms the items of the list with the transducer and appends the
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8 | * transformed items to the accumulator using an appropriate iterator function
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9 | * based on the accumulator type.
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10 | *
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11 | * The accumulator can be an array, string, object or a transformer. Iterated
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12 | * items will be appended to arrays and concatenated to strings. Objects will
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13 | * be merged directly or 2-item arrays will be merged as key, value pairs.
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14 | *
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15 | * The accumulator can also be a transformer object that provides a 2-arity
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16 | * reducing iterator function, step, 0-arity initial value function, init, and
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17 | * 1-arity result extraction function result. The step function is used as the
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18 | * iterator function in reduce. The result function is used to convert the
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19 | * final accumulator into the return type and in most cases is R.identity. The
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20 | * init function is used to provide the initial accumulator.
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21 | *
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22 | * The iteration is performed with [`R.reduce`](#reduce) after initializing the
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23 | * transducer.
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24 | *
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25 | * @func
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26 | * @memberOf R
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27 | * @since v0.12.0
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28 | * @category List
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29 | * @sig a -> (b -> b) -> [c] -> a
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30 | * @param {*} acc The initial accumulator value.
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31 | * @param {Function} xf The transducer function. Receives a transformer and returns a transformer.
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32 | * @param {Array} list The list to iterate over.
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33 | * @return {*} The final, accumulated value.
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34 | * @see R.transduce
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35 | * @example
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36 | *
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37 | * const numbers = [1, 2, 3, 4];
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38 | * const transducer = R.compose(R.map(R.add(1)), R.take(2));
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39 | *
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40 | * R.into([], transducer, numbers); //=> [2, 3]
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41 | *
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42 | * const intoArray = R.into([]);
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43 | * intoArray(transducer, numbers); //=> [2, 3]
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44 | */
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45 |
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46 | var into =
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47 | /*#__PURE__*/
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48 | _curry3(function into(acc, xf, list) {
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49 | return _isTransformer(acc) ? _reduce(xf(acc), acc['@@transducer/init'](), list) : _reduce(xf(_stepCat(acc)), _clone(acc, [], [], false), list);
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50 | });
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51 |
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52 | export default into; |
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