stringify-object-strings/index.js

Stringify an object’s strings

'use strict';

const isPlainObj = require('is-plain-obj');

const stringify = obj => {
    if (!isPlainObj(obj)) {
        throw new TypeError('Expected a plain object');
    }

    return Object.keys(obj).reduce((newObj, key) => {
        const value = obj[key];

        if (typeof value === 'string') {
            newObj[key] = JSON.stringify(value);
        } else if (isPlainObj(value)) {
            newObj[key] = stringify(value);
        } else {
            newObj[key] = value;
        }

        return newObj;
    }, {});
};

module.exports = stringify;