import _clone from "./internal/_clone.js"; import _curry3 from "./internal/_curry3.js"; import _isTransformer from "./internal/_isTransformer.js"; import _reduce from "./internal/_reduce.js"; import _stepCat from "./internal/_stepCat.js"; /** * Transforms the items of the list with the transducer and appends the * transformed items to the accumulator using an appropriate iterator function * based on the accumulator type. * * The accumulator can be an array, string, object or a transformer. Iterated * items will be appended to arrays and concatenated to strings. Objects will * be merged directly or 2-item arrays will be merged as key, value pairs. * * The accumulator can also be a transformer object that provides a 2-arity * reducing iterator function, step, 0-arity initial value function, init, and * 1-arity result extraction function result. The step function is used as the * iterator function in reduce. The result function is used to convert the * final accumulator into the return type and in most cases is R.identity. The * init function is used to provide the initial accumulator. * * The iteration is performed with [`R.reduce`](#reduce) after initializing the * transducer. * * @func * @memberOf R * @since v0.12.0 * @category List * @sig a -> (b -> b) -> [c] -> a * @param {*} acc The initial accumulator value. * @param {Function} xf The transducer function. Receives a transformer and returns a transformer. * @param {Array} list The list to iterate over. * @return {*} The final, accumulated value. * @see R.transduce * @example * * const numbers = [1, 2, 3, 4]; * const transducer = R.compose(R.map(R.add(1)), R.take(2)); * * R.into([], transducer, numbers); //=> [2, 3] * * const intoArray = R.into([]); * intoArray(transducer, numbers); //=> [2, 3] */ var into = /*#__PURE__*/ _curry3(function into(acc, xf, list) { return _isTransformer(acc) ? _reduce(xf(acc), acc['@@transducer/init'](), list) : _reduce(xf(_stepCat(acc)), _clone(acc, [], [], false), list); }); export default into;