nodejs repl with ability to run shell commands in prompt

repl_start.js

function replStart () {
/*
 * this function will start repl-debugger
 */
    let that;
    if (globalThis.utility2_repl1) {
        return;
    }
    // start repl
    that = require("repl").start({
        useGlobal: true
    });
    globalThis.utility2_repl1 = that;
    // init history
    that.setupHistory(require("path").resolve(
        process.env.HOME + "/.node_repl_history"
    ), function () {
        return;
    });
    // save eval-function
    that.evalDefault = that.eval;
    // hook custom-eval-function
    that.eval = function (script, context, file, onError) {
        script.replace((
            /^(\S+)\u0020(.*?)\n/
        ), function (ignore, match1, match2) {
            switch (match1) {
            // syntax-sugar - run shell-cmd
            case "$":
                switch (match2.split(" ").slice(0, 2).join(" ")) {
                // syntax-sugar - run git diff
                case "git diff":
                    match2 += " --color";
                    break;
                // syntax-sugar - run git log
                case "git log":
                    match2 += " -n 10";
                    break;
                // syntax-sugar - run ll
                case "ll":
                    match2 = "ls -Fal";
                    break;
                case "npm test":
                case "shBuildApp":
                    if (process.platform === "win32") {
                        match2 = process.env.UTILITY2_BIN + " " + match2;
                    }
                    break;
                }
                match2 = match2.replace((
                    /^git\u0020/
                ), "git --no-pager ");
                // source lib.utility2.sh
                match2 = (
                    (
                        process.platform !== "win32" &&
                        process.env.UTILITY2_BIN && (match2 !== ":")
                    )
                    ? ". " + process.env.UTILITY2_BIN + ";" + match2
                    : match2
                );
                // run shell-cmd
                console.error("$ " + match2);
                require("child_process").spawn(match2, {
                    shell: true,
                    stdio: [
                        "ignore", 1, 2
                    ]
                // print exitCode
                }).on("exit", function (exitCode) {
                    console.error("$ EXIT_CODE=" + exitCode);
                    that.evalDefault("\n", context, file, onError);
                });
                script = "\n";
                break;
            // syntax-sugar - map text with charCodeAt
            case "charCode":
                console.error(
                    match2.split("").map(function (chr) {
                        return (
                            "\\u" +
                            chr.charCodeAt(0).toString(16).padStart(4, 0)
                        );
                    }).join("")
                );
                script = "\n";
                break;
            // syntax-sugar - sort chr
            case "charSort":
                console.error(JSON.stringify(match2.split("").sort().join("")));
                script = "\n";
                break;
            // syntax-sugar - list obj-keys, sorted by item-type
            // console.error(Object.keys(global).map(function(key){return(typeof global[key]==='object'&&global[key]&&global[key]===global[key]?'global':typeof global[key])+' '+key;}).sort().join('\n')) // jslint ignore:line
            case "keys":
                script = (
                    "console.error(Object.keys(" + match2 +
                    ").map(function(key){return(" +
                    "typeof " + match2 + "[key]==='object'&&" +
                    match2 + "[key]&&" +
                    match2 + "[key]===global[key]" +
                    "?'global'" +
                    ":typeof " + match2 + "[key]" +
                    ")+' '+key;" +
                    "}).sort().join('\\n'))\n"
                );
                break;
            // syntax-sugar - print String(val)
            case "print":
                script = "console.error(String(" + match2 + "))\n";
                break;
            }
        });
        // eval script
        that.evalDefault(script, context, file, onError);
    };
}