@beenotung/tslib/io.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.IO = exports.getRL = void 0;
exports.createRL = createRL;
const readline_1 = require("readline");
const lazy_1 = require("./lazy");
function createRL(options = { input: process.stdin, output: process.stdout }) {
    return (0, readline_1.createInterface)(options);
}
exports.getRL = (0, lazy_1.createLazy)(createRL);
var IO;
(function (IO) {
    /**
     * @description lineNum start from 0
     * */
    function forEachLine(onnext, oncomplete) {
        const rl = (0, exports.getRL)();
        let lineNum = -1;
        rl.on('line', line => {
            lineNum++;
            if (line) {
                onnext(line, lineNum);
            }
        });
        if (typeof oncomplete === 'function') {
            rl.on('close', oncomplete);
        }
    }
    IO.forEachLine = forEachLine;
    /**
     * @description lineNum start from 0
     * */
    async function mapLine(f) {
        return new Promise((resolve, reject) => {
            try {
                const res = [];
                forEachLine((line, lineNum) => res.push(f(line, lineNum)), () => resolve(res));
            }
            catch (e) {
                reject(e);
            }
        });
    }
    IO.mapLine = mapLine;
    async function collect() {
        return mapLine(x => x);
    }
    IO.collect = collect;
})(IO || (exports.IO = IO = {}));