import { Transform } from 'node:stream'

const commaSplitter = new Transform({
    readableObjectMode: true,

    transform(chunk, encoding, callback) {
        this.push(chunk.toString().trim().split(','))
        callback()
    }
})

const arrayToObject = new Transform({
    readableObjectMode: true,
    writableObjectMode: true,

    transform(chunk, encoding, callback) {
        const obj = {}
        for (let i = 0; i < chunk.length; i += 2) {
            obj[chunk[i]] = chunk[i + 1]
        }
        this.push(obj)

        callback()
    }
})

const objectToString = new Transform({
    readableObjectMode: true,
    writableObjectMode: true,

    transform(chunk, encoding, callback) {
        this.push(JSON.stringify(chunk) + '\n')
        callback()
    }
})

process.stdin
    .pipe(commaSplitter)
    .pipe(arrayToObject)
    .pipe(objectToString)
    .pipe(process.stdout)