# Worker error with .mul is not a function

**URL:** <https://community.temporal.io/t/worker-error-with-mul-is-not-a-function/5573>\
**Category:** Community Support\
**Tags:** typescript-sdk\
**Created:** [August 4, 2022, 3:48am UTC](https://community.temporal.io/t/worker-error-with-mul-is-not-a-function/5573 "2022-08-04T03:48:46Z")\
**Posts on this page:** 1\
**Showing post:** 21

<div class="post-metadata">

**Author:** ![loren](https://sea2.discourse-cdn.com/flex016/user_avatar/community.temporal.io/loren/32/5099_2.png) [@loren](https://community.temporal.io/u/loren)\
**Post date:** [August 10, 2022, 3:03am UTC](https://community.temporal.io/t/worker-error-with-mul-is-not-a-function/5573/21 "2022-08-10T03:03:52Z")

</div>

We recommend not using the `temporalio` meta package anymore, due to issues like this. Instead, install all the packages you use directly:

```auto
npm install @temporalio/client @temporalio/worker @temporalio/workflow @temporalio/activity

```

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_[View the full topic](https://community.temporal.io/t/worker-error-with-mul-is-not-a-function/5573)._