# Transaction.commit(reason: any): Promise<void>

支持端：云函数

提交事务

# 参数

# reason: any

终止后，希望在 runTransaction 返回的 Promise reject 时接收到的值。

# 返回值

# Promise.<void>

提交完成

# 示例代码

const cloud = require('wx-server-sdk')
cloud.init({
  env: cloud.DYNAMIC_CURRENT_ENV
})
const db = cloud.database({
  throwOnNotFound: false,
})
const _ = db.command

exports.main = async (event) => {
  try {
    const transaction = await db.startTransaction()
    // ...
    await transaction.collection('account').doc('aaa').update({
      data: {
        amount: 100
      }
    })
    // 提交事务
    await transaction.commit()

    return {
      success: true,
    }
  } catch (e) {
    console.error(`transaction error`, e)

    return {
      success: false,
      error: e,
    }
  }
}