How to test an npm module with peerDependencies?

Question

I am new to understand peerDependencies, and I have read the following references seeking as to how to test an npm module contains peerDependencies within i

Answer 1

In my case, I developed a library last time that use ioredis as peer dependency. My solution was to put that library as well in dev dependency.

// package.json
"peerDependencies": {
    "ioredis": "4.x"
},
"devDependencies": {
    "ioredis": "4.x"
}

it worked well and no issue so far using this approach.