issue: ReferenceError: __dirname is not defined

I am getting this error:
```sh
gcp-us-east4 isolate start time: 111.91 ms
gcp-us-east4 Listening on http://localhost:80/
gcp-asia-south1 ReferenceError: __dirname is not defined
at https://deno.land/x/imagemagick_deno@0.0.14/src/wasm/magick_native.js:9:1767
at https://deno.land/x/imagemagick_deno@0.0.14/src/image-magick.ts:26:7
at new Promise ()
at new ImageMagick (https://deno.land/x/imagemagick_deno@0.0.14/src/image-magick.ts:20:19)
at Function._create (https://deno.land/x/imagemagick_deno@0.0.14/src/image-magick.ts:38:39)
at https://deno.land/x/imagemagick_deno@0.0.14/src/image-magick.ts:239:30
```