iteragain/dist/es5/reduce.js

Javascript Iterable/Iterator/Generator-function utilities.

import { REDUCE_EMPTY_ERROR } from './internal/emptyIteratorError';
import toIterator from './toIterator';
export function reduce() {
    var args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        args[_i] = arguments[_i];
    }
    if (typeof args[0] === 'function')
        return function (it) { return reduce(it, args[0], args[1]); };
    var it = toIterator(args[0]);
    var next;
    var reducer = args[1];
    if (args[2] === undefined) {
        var first = it.next();
        if (first.done)
            throw new TypeError(REDUCE_EMPTY_ERROR);
        var accumulator_1 = first.value;
        while (!(next = it.next()).done)
            accumulator_1 = reducer(accumulator_1, next.value);
        return accumulator_1;
    }
    var accumulator = args[2];
    while (!(next = it.next()).done)
        accumulator = reducer(accumulator, next.value);
    return accumulator;
}
export default reduce;
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