Represent minecraft windows. Check mineflayer-web-inventory to display windows.
Read the API.
const windows = require('prismarine-windows')('1.8') const Item = require('prismarine-item')('1.8') const inv = windows.createWindow(1, 'minecraft:inventory', 'inv', 36) inv.updateSlot(10, new Item(256, 1)) console.log(inv.items())