你可以用猫鼬的 findOneAndUpdate 更新文档的现有值。

"use strict";


const ids = products.map(x => x._id);

let operations = products.map(xlProductData => {

  return ProductsDatabase.find({
    _id: {
      $in: ids
    }
  }).then(products => {

    return products.map(productData => {
      return ProductsDatabase.findOneAndUpdate({
        _id: xlProductData.id // or product._id
      }, {
        sku: xlProductData.sku,
        product_name: xlProductData.product_name,
        product_cost: xlProductData.product_cost,
        product_price: xlProductData.product_price,
        Warehouse: xlProductData.Warehouse,
        product_quantity: productData.product_quantity - xlProductData.product_quantity,

        $push: {
          stamps: {
            [new Date().getTime()]: -1 * xlProductData.product_quantity
          }
        },

        updated_at: new Date()
      }, {
        upsert: false,
        returnNewDocument: true
      });
    });

  });

});

Promise.all(operations).then(() => {
  console.log('All good');
}).catch(err => {
  console.log('err ', err);
});