eslint-config-moneyforward 4 is here!

[wakamsha]

eslint-config-moneyforward 4 has been released. This is a major update just two months after the previous release, but it includes many attractive features.

• Support ESLint Flat Config
• Update several eslint-plugin versions
  • tyepscript-eslint
  • eslint-plugin-jest
  • eslint-plugin-n
  • eslint-plugin-testing-library
• Fix many bugs

Support ESLint Flat Config

Note

cf. Migrate to Flat Config

Starting with v4, ESLint Flat Config is finally officially supported. This will greatly improve the readability and usability of ESLint Configuration:

// eslint.config.js

import { essentials, react, typescript } from 'eslint-config-moneyforward/flat';

export default [
  ...essentials,
  ...react,
  ...typescript,
];

Of course, you can override the ruleset to suit your preferences:

import { essentials, react, typescript } from 'eslint-config-moneyforward/flat';

export default [
  ...essentials,
+ {
+   rules: {
+     'no-plusplus': ['off'],
+   },
+ },
  ...react,
  ...typescript,
];

Warning

The existing eslintrc format can still be used, but from ESLint 10 onwards, only Flat Config can be used, so we recommend migrating as soon as possible.
cf. Flat config rollout plans - ESLint - Pluggable JavaScript Linter

Update several eslint-plugin versions (especially typescript-eslint)

Several of the included ESLint Plugins have been updated.

	v3	v4
tyepscript-eslint	^6.21.0	^7.10.0
eslint-plugin-jest	^27.9.0	^28.5.0
eslint-plugin-n	^16.6.2	^17.7.0
eslint-plugin-testing-library	v5.11.1	v6.2.2

One thing I’d like to mention in particular is typescript-eslint. Until now, the included plugin was ^6.21.0, which required TypeScript v5.4.0 or lower in your environment. With this major update, the included plugin is now ^7.10.0, which means TypeScript v5.4 and higher is now supported.

cf. typescript-eslint/CHANGELOG.md at main · typescript-eslint/typescript-eslint

Important

With this major update, the required versions for Node.js and ESLint have been raised as follows:

	v3	v4
Node.js	>= 18.0.0	>= 18.18.0 || >= 20.0.0
ESLint	^7.32.0 || ^8.2.0	^8.56.0

Fix many bugs

• fix: import/namespace error #294
• fix: Allow import of devDependency modules in Storybook files #279
• fix: Resolve the problem of incorrect recognition of alias path by TypeScript's Compiler Options #293
• fix: Specify jest as a Peer Dependency #298