Mocking a method breaks the constructor

[lobbin]

The tests of our project broke when we updated the dependencies. Can't really tell which one though :(

We have a sdk module looking like this:

const AWS = require('aws-sdk')

AWS.config.update({
  accessKeyId: process.env.AWS_ACCESSKEY_ID,
  secretAccessKey: process.env.AWS_ACCESSKEY_SECRET,
  region: process.env.AWS_REGION
})

module.exports= {
  s3: new AWS.S3(),
  timestreamwrite: new AWS.TimestreamWrite({ apiVersion: '2018-11-01' })
  <more exports>
}

module.exports.default = AWS

And after the latest updates, we're getting a TypeError on the constructor after we apply a mock function TypeError: AWS.TimestreamWrite is not a constructor

One of the shorter tests looks a bit like this:

when('the AWS scheduler calls the lambda function', async () => {
  AWSMock.mock('TimestreamWrite', 'writeRecords', (params, callback) => {
    paramsTimestream = params
    callback(null, {})
  })

  let statistics
  jest.isolateModules(() => {
    statistics = require('../../../endpoints/cron/statistics')
  })

  await statistics({}, {functionName: 'jest'})

  AWSMock.restore('TimestreamWrite', 'writeRecords')
})