feature: add FSD eslint config

.eslintrc.cjs

@@ -0,0 +1,196 @@
+module.exports = {
+	root: true,
+	env: { browser: true, es2020: true },
+	extends: [
+		"eslint:recommended",
+		"plugin:@typescript-eslint/recommended",
+		"next/core-web-vitals",
+		"plugin:react-hooks/recommended",
+	],
+	ignorePatterns: ["dist", ".eslintrc.cjs"],
+	parser: "@typescript-eslint/parser",
+	plugins: ["react-refresh", "boundaries"],
+	settings: {
+		"import/resolver": {
+			typescript: {
+				alwaysTryTypes: true,
+			},
+		},
+		"boundaries/include": ["src/**/*"],
+		"boundaries/elements": [
+			{
+				type: "app",
+				pattern: "app",
+			},
+			{
+				type: "pages",
+				pattern: "src/pages/*",
+				capture: ["page"],
+			},
+			{
+				type: "widgets",
+				pattern: "widgets/*",
+				capture: ["widget"],
+			},
+			{
+				type: "features",
+				pattern: "features/*",
+				capture: ["feature"],
+			},
+			{
+				type: "entities",
+				pattern: "entities/*",
+				capture: ["entity"],
+			},
+			{
+				type: "shared",
+				pattern: "shared/*",
+				capture: ["segment"],
+			},
+		],
+	},
+	rules: {
+		"react-refresh/only-export-components": 0,
+		"boundaries/entry-point": [
+			2,
+			{
+				default: "disallow",
+				rules: [
+					{
+						target: [
+							[
+								"shared",
+								{
+									segment: "lib",
+								},
+							],
+						],
+						allow: "*/index.ts",
+					},
+					{
+						target: [
+							[
+								"shared",
+								{
+									segment: "lib",
+								},
+							],
+						],
+						allow: "*.(ts|tsx)",
+					},
+					{
+						target: [
+							[
+								"shared",
+								{
+									segment: "constants",
+								},
+							],
+						],
+						allow: "index.ts",
+					},
+					{
+						target: [
+							[
+								"shared",
+								{
+									segment: "ui", // ("ui"|"constants")
+								},
+							],
+						],
+						allow: "**",
+					},
+					{
+						target: ["app", "pages", "widgets", "features", "entities"],
+						allow: "index.(ts|tsx)",
+					},
+				],
+			},
+		],
+		"boundaries/element-types": [
+			2,
+			{
+				default: "allow",
+				message: "${file.type} is not allowed to import (${dependency.type})",
+				rules: [
+					{
+						from: ["shared"],
+						disallow: ["app", "pages", "widgets", "features", "entities"],
+						message:
+							"Shared module must not import upper layers (${dependency.type})",
+					},
+					{
+						from: ["entities"],
+						message: "Entity must not import upper layers (${dependency.type})",
+						disallow: ["app", "pages", "widgets", "features"],
+					},
+					{
+						from: ["entities"],
+						message: "Entity must not import other entity",
+						disallow: [
+							[
+								"entities",
+								{
+									entity: "!${entity}",
+								},
+							],
+						],
+					},
+					{
+						from: ["features"],
+						message:
+							"Feature must not import upper layers (${dependency.type})",
+						disallow: ["app", "pages", "widgets"],
+					},
+					{
+						from: ["features"],
+						message: "Feature must not import other feature",
+						disallow: [
+							[
+								"features",
+								{
+									feature: "!${feature}",
+								},
+							],
+						],
+					},
+					{
+						from: ["widgets"],
+						message:
+							"Feature must not import upper layers (${dependency.type})",
+						disallow: ["app", "pages"],
+					},
+					{
+						from: ["widgets"],
+						message: "Widget must not import other widget",
+						disallow: [
+							[
+								"widgets",
+								{
+									widget: "!${widget}",
+								},
+							],
+						],
+					},
+					{
+						from: ["pages"],
+						message: "Page must not import upper layers (${dependency.type})",
+						disallow: ["app"],
+					},
+					{
+						from: ["pages"],
+						message: "Page must not import other page",
+						disallow: [
+							[
+								"pages",
+								{
+									page: "!${page}",
+								},
+							],
+						],
+					},
+				],
+			},
+		],
+	},
+};

.eslintrc.json

@@ -1,3 +0,0 @@
-{
-	"extends": ["next/core-web-vitals",  "plugin:react-hooks/recommended"]
-}