7.Towns to JSON

function json(input) {

    let [columns, ...table] = input.map(splitLine);

    return JSON.stringify(table.map(entry => {
        return columns.reduce((acc, curr, index) => {
            acc[curr] = entry[index];
            return acc;
        }, {})

    }));


    function splitLine(input) {
        return input.split('|')
            .filter(emptyString)
            .map(x => x.trim())
            .map(convertIfNum)
    }

    function emptyString(str) {
        return str !== '';
    };

    function convertIfNum(num) {
        return isNaN(num) ? num : Number(Number(num).toFixed(2));
    };

}