lazzy.ts/consumers/uppend.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.uppendAsync = exports.uppend = void 0;
function uppend(source, newValues, equals) {
    const result = [];
    let x = source.next();
    while (x.done !== true) {
        result.push(x.value);
        x = source.next();
    }
    let x2 = newValues.next();
    while (x2.done !== true) {
        const val = x2.value;
        const index = result.findIndex((v) => equals(v, val));
        if (index < 0) {
            result.push(x2.value);
        }
        else {
            result[index] = x2.value;
        }
        x2 = newValues.next();
    }
    return result;
}
exports.uppend = uppend;
function uppendAsync(source, newValues, equals) {
    return __awaiter(this, void 0, void 0, function* () {
        const result = [];
        let x = yield source.next();
        while (x.done !== true) {
            result.push(x.value);
            x = yield source.next();
        }
        let x2 = yield newValues.next();
        while (x2.done !== true) {
            const val = x2.value;
            const index = result.findIndex((v) => equals(v, val));
            if (index < 0) {
                result.push(x2.value);
            }
            else {
                result[index] = x2.value;
            }
            x2 = yield newValues.next();
        }
        return result;
    });
}
exports.uppendAsync = uppendAsync;
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