adapter-netlify missing dependency in output function

Recently, I’ve been getting this weird error with adapter-netlify:

12:59:10 PM:   Error message
12:59:10 PM:   A Netlify Function is using "encoding" but that dependency has not been installed yet.
12:59:10 PM: ​
12:59:10 PM:   By default, dependencies inside a Netlify Function's "package.json" are not automatically installed.
  There are several ways to fix this problem:
12:59:10 PM:     - Removing your Function's "package.json" and adding the dependencies to the project's top-level "package.json" instead. This is the fastest and safest solution.
12:59:10 PM:     - Running "npm install" or "yarn" inside your Netlify Function in your build command.
12:59:10 PM:     - Adding the following plugin to your "netlify.toml":
12:59:10 PM: ​
12:59:10 PM:   [[plugins]]
12:59:10 PM:   package = "@netlify/plugin-functions-install-core"

Adding the suggested plugin doesn’t seem to help…

I have not been able to reproduce the issue in a minimal repo, but my repo is public and this commit reproduces the issue.

[samyoungnyc]

I’m experiencing the exact same problem but my error code is:

A Netlify Function is using "exports" but that dependency has not been installed yet.

Tried to install ‘exports’ but got the following error:

npm ERR! notsup Unsupported engine for super@0.1.0: wanted: {"node":">= 0.6.0 < 0.7.0"} (current: {"node":"14.17.0","npm":"6.14.13"})

FWIW if anyone is interested I’d greatly appreciate help with this, I’m totally flummoxed.

[ixxie]

Right, I see your point. Well, I’ll leave it to better minds to think about the issues of bundling and dependencies…