1.10.21. fejezet, STDIN kezelése

npm install --save-dev @types/node

import readline from 'readline';
 
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
})
 
const q = (question: string) => {
    return new Promise((resolve, reject) => {
        rl.question(question, (answer) => {
            resolve(answer);
        });
    });
}
 
const main = async () => {
    const answer = await q('Enter answer: ');
    console.log(`Your answer is: ${answer}`);
    rl.close()
}
 
main()

npm i prompt
npm i --save-dev @types/prompt

import prompt from 'prompt';
 
var schema = {
    properties: {
        name: {
            pattern: /^[a-zA-Z\s\-]+$/,
            message: 'Name must be only letters, spaces, or dashes',
            required: true
        },
        password: {
            description: 'Enter your password',
            pattern: /^\w+$/,
            message: 'Password must be letters',
            hidden: true,
            replace: '*',
            default: 'lamepassword',
            required: true,
        }
    }
};
 
prompt.start();
 
prompt.get(schema, function (err, result) {
    console.log('Command-line input received:');
    console.log('  name: ' + result.name);
    console.log('  password: ' + result.password);
});

npm install --save prompts
npm i --save-dev @types/prompts

import prompts from 'prompts';
 
async function getPassword(message: string) {
    const response = await prompts({
        type: 'password',
        name: 'value',
        message: message,
    });
    console.log("password:", response.value);
}
 
getPassword("Enter your password:");

npm i @inquirer/password

import password from '@inquirer/password';
 
async function getPassword(message: string) {
    const answer = await password({ message: message, mask: '*' });
    return answer;
}
 
getPassword("Enter password:").then((result) => {
    console.log("Your password is:", result);
})