tns plugin add <plugin> has issues with postinstall scripts

tns plugin add <plugin> has some issues with stdin when postinstall is using inquirer.
For example create plugin that has the following postinstall script:

"postinstall": "npm install inquirer && node myScript.js"

where myScript.js is something like:

var inquirer = require('inquirer');
var quest = {
    'name': 'myinq',
    'type': 'input',
    'message': 'Ask something: ',
    'default': undefined
};

function promptForEmail() {
    inquirer.prompt([quest],
        function(answers) {
            console.log("answers:", answers);
        });
}

promptForEmail();

In case you call npm install <plugin> the prompt is executed correctly and user can type.
In case you call tns plugin add <plugin> the user's input is slowed down, some symbols are not shown at all, etc.

Required for nativescript-telerik-ui.

Reproducible without using inquirer. Set the postinstall script to be:

const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

rl.question('Ask something:? ', (answer) => {
    console.log('Thank you for your valuable feedback, which was:\n', answer);
    rl.close();
});

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tns plugin add <plugin> has issues with postinstall scripts #1610

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tns plugin add <plugin> has issues with postinstall scripts #1610

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rosen-vladimirov commented on Mar 22, 2016

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