iteragain/dist/cjs/unzip.js

Javascript Iterable/Iterator/Generator-function utilities.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.unzip = unzip;
const spy_1 = require("./spy");
const tee_1 = require("./tee");
const map_1 = require("./map");
/**
 * The inverse of `zip` and `zipLongest`. This function disaggregates the elements of the input iterator. The nth
 * iterator in the returned tuple contains the nth element of each value in the input iterator. The length of the
 * returned tuple is determined by the length of the first value in the input iterator.
 */
function unzip(arg) {
    const [[head], it] = (0, spy_1.default)(arg);
    const n = Array.isArray(head) ? head.length : 1;
    if (n < 2)
        return [it];
    return (0, tee_1.default)(it, n).map((it, i) => (0, map_1.default)(it, v => v[i]));
}
exports.default = unzip;
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