Let's support eslint v8

[sanemat]

We have new eslint v8!
ESLint v8.0.0 released - ESLint - Pluggable JavaScript linter
Migrating to v8.0.0 - ESLint - Pluggable JavaScript linter

Do you have any ideas about supporting versions?

Some modules support wide range:

"eslint": "^5.16.0 || ^6.8.0 || ^7.2.0",

https://github.com/airbnb/javascript/blob/4ee732639396362c6981b1aa4730934c3baa7919/packages/eslint-config-airbnb-base/package.json#L60

In this case, we need to have below:

"@typescript-eslint/eslint-plugin": "^4.28.0 || ^5.0.0",
"@typescript-eslint/parser": "^4.28.0 || ^5.0.0",

etc.
😅

I prefer this way:

"eslint": ">=7",

eslint-config-moneyforward/package.json

Line 40 in 65e0cfe

"eslint": ">=7",

It may be fragile.

Do you have any ideas?

[kimromi]

@sanemat thank you!!

It can be fragile, but so keep the peerDependencies "eslint": ">=7".
It change peerDependencies "eslint": ">=8" when the dependencies eslint plugins support v8.
🤔

• chore(CI): add tests for ESLint 8 prettier/eslint-config-prettier#201
• feat: support ESLint 8.x jest-community/eslint-plugin-jest#903
• test: add ESLint 8.x tests testing-library/eslint-plugin-jest-dom#200
• feat: support ESLint 8.x mysticatea/eslint-plugin-node#295
• [New] support eslint 8.x jsx-eslint/eslint-plugin-react#3059
• feat(eslint-plugin-react-hooks): support ESLint 8.x facebook/react#22248
• feat: support ESLint 8.x testing-library/eslint-plugin-testing-library#465

(I'm not good at English:pray:)