lazzy.ts/consumers/partition.js

Fast and lightweight library for lazy operations with iterable objects.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.partitionAsync = exports.partition = void 0;
function partition(iterator, predicate) {
    const result = [[], []];
    let index = 0;
    let x = iterator.next();
    while (x.done !== true) {
        if (predicate(x.value, index++)) {
            result[0].push(x.value);
        }
        else {
            result[1].push(x.value);
        }
        x = iterator.next();
    }
    return result;
}
exports.partition = partition;
function partitionAsync(iterator, predicate) {
    return __awaiter(this, void 0, void 0, function* () {
        const result = [[], []];
        let index = 0;
        let x = yield iterator.next();
        while (x.done !== true) {
            if (yield predicate(x.value, index++)) {
                result[0].push(x.value);
            }
            else {
                result[1].push(x.value);
            }
            x = yield iterator.next();
        }
        return result;
    });
}
exports.partitionAsync = partitionAsync;
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