<p>This is nothing to be concerned about. I see it reporting a different module for the warning.</p>
<pre><code>⚠ ｢wdm｣: WARNING in Compiling Web.DOM.Internal.Types
</code></pre>
<p>There will be various warnings emitted. But they are only <em>warnings</em>. The fact that the exact warning isn't shown by <code>npm</code> isn't great though.</p>
<p>You won't be able to avoid warnings, unless the developers adhere to an overly strict warning-free code (e.g. <code>-Werror</code>). Then again lot of software emits warnings during compilation, sometimes they are just compiler diagnostics.</p>

CC BY-SA 4.0
2022-01-14T04:54:03.053Z
2022-01-14T04:54:03.053Z
angerman
<p>I am getting a warning when I run npm start on the plutus-playground-client:</p>
<pre><code>ℹ ｢wds｣: webpack output is served from /
ℹ ｢wds｣: Content not from webpack is served from /home/datapool/plutus-apps/plutus-playground-client/dist
⚠ ｢wdm｣: WARNING in Compiling Unsafe.Coerce
</code></pre>
<p>And at the end I get flagged the final output:</p>
<pre><code>webpack compiled with 1 warning
ℹ ｢wdm｣: Compiled with warnings.
</code></pre>
<p>The problem seems to stem from Unsafe.Coerce. Any explanation on this and how I might avoid the warning?</p>

<plutus><plutus-pioneer-program><plutus-playground><plutus-pab>
Webpack warning when starting plutus-playground-client
# Webpack warning when starting plutus-playground-client

(Asked by: username_0 on 2022-01-13)

I am getting a warning when I run npm start on the plutus-playground-client:

```
ℹ ｢wds｣: webpack output is served from /
ℹ ｢wds｣: Content not from webpack is served from /home/datapool/plutus-apps/plutus-playground-client/dist
⚠ ｢wdm｣: WARNING in Compiling Unsafe.Coerce

```

And at the end I get flagged the final output:

```
webpack compiled with 1 warning
ℹ ｢wdm｣: Compiled with warnings.

```

The problem seems to stem from Unsafe.Coerce. Any explanation on this and how I might avoid the warning?

**Tags:** plutus, plutus-pioneer-program, plutus-playground, plutus-pab


---

## 1 answers

### Answer by username_1 on 2022-01-14. Score: 0

This is nothing to be concerned about. I see it reporting a different module for the warning.

```
⚠ ｢wdm｣: WARNING in Compiling Web.DOM.Internal.Types

```

There will be various warnings emitted. But they are only *warnings*. The fact that the exact warning isn't shown by `npm` isn't great though.

You won't be able to avoid warnings, unless the developers adhere to an overly strict warning-free code (e.g. `-Werror`). Then again lot of software emits warnings during compilation, sometimes they are just compiler diagnostics.


---

