@bitblit/asyncglk/dist/glkote/cheap/stdio.js

A Typescript Glk library

/*

Shared cheap-mode stdio
=======================

Copyright (c) 2022 Dannii Willis
MIT licenced
https://github.com/curiousdannii/asyncglk

*/
import MuteStream from 'mute-stream';
import readline from 'readline';
// A memoized instance
let instance;
export function get_stdio() {
    if (instance) {
        return instance;
    }
    const stdin = process.stdin;
    // Prepare to receive input events
    if (stdin.isTTY) {
        stdin.setRawMode(true);
    }
    const stdout = new MuteStream();
    stdout.pipe(process.stdout);
    const rl = readline.createInterface({
        input: stdin,
        output: stdout,
        prompt: '',
    });
    readline.emitKeypressEvents(stdin);
    instance = {
        rl: rl,
        stdin: stdin,
        stdout: stdout,
    };
    return instance;
}