parser.js

const expr = /export \{?((.|\s)+?)\}? from \'(.+)\'/gmi

process.stdin.setEncoding('utf8');

let input = ''
process.stdin.on('data', (chunk) => {
    input += chunk
});


const getKeys = (text) => {
    return text.replace(/\s/gm, '').split(',')
}

const parse = (text) => {
    let ans;
    const mapping = {}

    while(true) {
        ans = expr.exec(text)
        if (ans !== null)
            getKeys(ans[1]).forEach(cur => {
                mapping[cur] = ans[3]
            })
        else break;
    } 

    return mapping
}

process.stdin.on('end', () => {
    console.log(parse(input))
});