[rollup] Unresolved dependencies

I had an weired warning message when building my app.

TXT
(!) Unresolved dependencies
https://rollupjs.org/guide/en/#warning-treating-module-as-external-dependency
spark-md5 (imported by src/components/Cloudinary.svelte)
...
...
(!) Missing global variable name
Use output.globals to specify browser global variable names
    corresponding to external modules
spark-md5 (guessing 'md5')

• No problem had occurred before.
• No problem in local environment.
• Dependency error in production server

Cloudinary.svelte
  import axios from 'axios'
  import api from '../service/api'
  import md5 from 'spark-md5' // !!!! <+=== here

Cause

I added Spark Md5 dependency in local pc.

BASH
$ npm install --save spark-md5

But, I fogot to install the library in production server

BASH
root@pc-toybox:/workspace/docker/backend/blog-fe/node_modules# ls

... ... ... sourcemap-codec ...
... ... ... string-width    ...

• no spark-md5 in node_modules

Solution

just installed the library in production server

BASH
$ npm install --save spark-md5

• done