chore(repo): update eslint config to flat

Author: YusukeHirao

.eslintrc.cjs

@@ -0,0 +1,30 @@
+import path from 'node:path';
+
+import dz from '@d-zero/eslint-config';
+
+import scaffold from './packages/@d-zero/scaffold/eslint.config.js';
+
+/**
+ * @type {import('eslint').Linter.Config[]}
+ */
+export default [
+	...dz.configs.node,
+	...scaffold,
+	{
+		files: ['**/{*.{config,spec}.{js,mjs,ts},*.*rc,*.*rc.{js,mjs}}'],
+		rules: {
+			'import/no-extraneous-dependencies': 0,
+		},
+	},
+	{
+		ignores: [
+			...scaffold.flatMap(
+				(config) =>
+					config.ignores?.map((ignorePath) =>
+						path.join('packages', '@d-zero', 'scaffold', ignorePath),
+					) ?? [],
+			),
+			'**/dist/**/*',
+		],
+	},
+];

eslint.config.js

@@ -12,7 +12,7 @@
 		"test": "vitest run --test-timeout 60000",
 		"lint": "run-s lint:eslint lint:prettier lint:textlint lint:cspell",
 		"lint:cspell": "cspell --no-progress --show-suggestions \"**\"",
-		"lint:eslint": "eslint --fix \"./*.{js,cjs,mjs}\"",
+		"lint:eslint": "eslint --fix \"./{*,**/*}.{js,cjs,mjs}\"",
 		"lint:prettier": "prettier --write \"./**/*.{js,jsx,ts,tsx,scss,pug,html}\"",
 		"lint:textlint": "textlint --fix \"./**/*.md\" && textlint \"./**/*.md\"",
 		"release": "lerna publish --exact --conventional-commits --conventional-graduate",