incorrect peer dependency "eslint@^4.9.0"

[ghost]

with

eslint-config-airbnb-base@12.1.0
eslint@5.5.0

currently installed, local pkg updates report

warning " > eslint-config-airbnb-base@12.1.0" has incorrect peer dependency "eslint@^4.9.0".

[ljharb]

That’s because those aren’t compatible. You’ll need to update the base config, or downgrade eslint.

[ghost]

@ljharb

Yep, that does the trick, of course.

What's odd is, I had originally installed

yarn add --dev eslint-config-airbnb-base@latest

with that I still have

yarn list | grep airbnb
	├─ eslint-config-airbnb-base@12.1.0

even after a typical

yarn upgrade
	...
	warning " > eslint-config-airbnb-base@12.1.0" has incorrect peer dependency "eslint@^4.9.0".
	...
yarn list | grep airbnb
	├─ eslint-config-airbnb-base@12.1.0

If however, I explicitly RE-exec the add,

yarn add --dev eslint-config-airbnb-base@latest
	...
	[4/4] Building fresh packages...
	success Saved lockfile.
	success Saved 4 new dependencies.
	info Direct dependencies
	└─ eslint-config-airbnb-base@13.1.0
	info All dependencies
	├─ eslint-config-airbnb-base@13.1.0
	├─ has-symbols@1.0.0
	├─ object.assign@4.1.0
	└─ object.entries@1.0.4
	Done in 9.35s.
yarn list | grep airbnb
	├─ eslint-config-airbnb-base@13.1.0

that takes care of the warning

which begs the question ... why isnt' the @latest spec tracking across upgrades?

[ljharb]

Yarn has a number of bugs around peer deps. I’d suggest using npm, and the install command in the readme.