• item is an item (if the COSMETIC_DATA intent is enabled), and if not, it will be the item ID #
• pos is an object with the x, y, and z properties
• damage is a number
• radius is a number (float)

bot.on('grenadeExplode', (item, pos, damage, radius) => {
    console.log(`a grenade exploded at ${pos}!`);
    console.log(`it did ${damage} damage with a ${radius} radius`);
});