how to do bulk update in sequelize code example

Example 1: create or update in sequelize

async function updateOrCreate (model, where, newItem) {
    // First try to find the record
   const foundItem = await model.findOne({where});
   if (!foundItem) {
        // Item not found, create a new one
        const item = await model.create(newItem)
        return  {item, created: true};
    }
    // Found an item, update it
    const item = await model.update(newItem, {where});
    return {item, created: false};
}

Example 2: update data in sequelize

const objectToUpdate = {
title: 'Hello World',
description: 'Hello World'
}

models.Locale.update(objectToUpdate, { where: { id: 2}})