npm install --save censor-json

const censorData = require('censor-json');
censorData.redact(mapping, data);

const censorData = require('censor-json');
const data = {
    name: 'Ned Stark',
    house: 'Stark'
    details: {
        reason_of_death: 'honor',
        killed_by: 'Illyn payne, Joffery, Baelish'
    },
    motto: 'Winter is Coming!'
}

const mapping = {
    { path: 'name' },
    { path: 'motto' },
    { path: 'details.reason_of_death' }
}

censorData.redact(mapping, data); 

/*
Output: {
    name: 'N*d *ta**',
    house: 'Stark'
    details: {
        reason_of_death: '*on**',
        killed_by: 'Illyn payne, Joffery, Baelish'
    },
    motto: '*i**er i* C*m**g!'
}
*/