chore: add ESLint support

#134

.editorconfig

@@ -108,7 +108,7 @@ ij_typescript_import_sort_module_name = false
 ij_typescript_import_use_node_resolution = true
 ij_typescript_imports_wrap = on_every_item
 ij_typescript_indent_case_from_switch = true
-ij_typescript_indent_chained_calls = false
+ij_typescript_indent_chained_calls = true
 ij_typescript_indent_package_children = 0
 ij_typescript_jsdoc_include_types = false
 ij_typescript_jsx_attribute_value = braces
@@ -278,7 +278,7 @@ ij_javascript_import_sort_module_name = false
 ij_javascript_import_use_node_resolution = true
 ij_javascript_imports_wrap = on_every_item
 ij_javascript_indent_case_from_switch = true
-ij_javascript_indent_chained_calls = false
+ij_javascript_indent_chained_calls = true
 ij_javascript_indent_package_children = 0
 ij_javascript_jsx_attribute_value = braces
 ij_javascript_keep_blank_lines_in_code = 1

.github/dependabot.yaml

@@ -21,3 +21,12 @@ updates:
       - "CI/CD"
     commit-message:
       prefix: 'ci'
+    groups:
+      eslint:
+        patterns:
+          - 'eslint'
+          - '@eslint/js'
+      typescript-eslint:
+        patterns:
+          - 'typescript-eslint'
+          - '@typescript-eslint/*'

.github/workflows/eslint.yaml

@@ -0,0 +1,21 @@
+name: 'ESLint'
+on:
+  push:
+    branches: ['main']
+  pull_request:
+    branches: ['main']
+jobs:
+  build:
+    name: 'ESLint'
+    runs-on: 'ubuntu-latest'
+    steps:
+      - name: 'Checkout code'
+        uses: 'actions/checkout@v4'
+      - name: 'Install Node.js'
+        uses: 'actions/setup-node@v4'
+        with:
+          node-version: '22.x'
+      - name: 'Install NPM packages'
+        run: 'npm ci'
+      - name: 'Run ESLint'
+        run: 'npm run lint'

eslint.config.mjs

@@ -0,0 +1,34 @@
+import js from "@eslint/js";
+import tsParser from "@typescript-eslint/parser";
+import tsPlugin from "@typescript-eslint/eslint-plugin";
+import globals from "globals";
+
+export default [
+	{
+		languageOptions: {
+			globals: {
+				...globals.node,
+				...globals.browser
+			}
+		}
+	},
+	js.configs.recommended,
+	{
+		files: ["**/*.ts"],
+		languageOptions: {
+			parser: tsParser
+		},
+		plugins: {
+			"@typescript-eslint": tsPlugin
+		},
+		rules: {
+			...tsPlugin.configs.recommended.rules
+		}
+	},
+	{
+		rules: {
+			"indent": ["warn", "tab", { "MemberExpression": 1 }],
+		},
+		files: ["**/*.js", "**/*.ts"]
+	}
+];