feat: migrate to ESM

This also bundles the plugins so that host projects
no longer need to install them.

BREAKING CHANGE: new config format

Author: coderbyheart

.eslintrc

@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "@nordicsemiconductor/eslint-config-asset-tracker-cloud-typescript"
+  ]
+}

.eslintrc.json

@@ -1,13 +1,20 @@
-module.exports = {
+import unusedImports from 'eslint-plugin-unused-imports'
+import typescriptEslint from '@typescript-eslint'
+import unicorn from 'unicorn'
+import prefer from 'prefer-arrow'
+import importPlugin from 'import'
+import prettierConfig from 'eslint-config-prettier'
+
+export const config = {
 	parser: '@typescript-eslint/parser',
 	parserOptions: {
 		project: './tsconfig.json',
 	},
-	plugins: ['@typescript-eslint', 'unicorn', 'prefer-arrow', 'import'],
+	plugins: [typescriptEslint, unicorn, prefer, importPlugin, unusedImports],
 	extends: [
 		'eslint:recommended',
 		'plugin:@typescript-eslint/recommended',
-		'prettier',
+		prettierConfig,
 	],
 	rules: {
 		'@typescript-eslint/indent': ['off'],
@@ -60,6 +67,7 @@ module.exports = {
 		'prefer-arrow/prefer-arrow-functions': ['error'],
 		'object-shorthand': ['error'],
 		'import/extensions': ['error', 'always', { ignorePackages: true }],
+		'unused-imports/no-unused-imports': ['error'],
 	},
 	overrides: [
 		{
@@ -82,3 +90,5 @@ module.exports = {
 		node: true,
 	},
 }
+
+export default [config]

.prettierrc.js renamed to .prettierrc.cjs

@@ -3,6 +3,7 @@
   "version": "0.0.0-development",
   "description": "ESLint config for all nRF Asset Tracker projects.",
   "main": "index.js",
+  "type": "module",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/NordicSemiconductor/asset-tracker-cloud-eslint-config-typescript.git"
@@ -22,7 +23,8 @@
     "eslint-config-prettier": "8.8.0",
     "eslint-plugin-import": "2.27.5",
     "eslint-plugin-prefer-arrow": "1.2.3",
-    "eslint-plugin-unicorn": "47.0.0"
+    "eslint-plugin-unicorn": "47.0.0",
+    "eslint-plugin-unused-imports": "3.0.0"
   },
   "devDependencies": {
     "@nordicsemiconductor/asset-tracker-cloud-code-style": "12.0.51"

commitlint.config.js renamed to commitlint.config.cjs

@@ -1,18 +1,22 @@
 {
   "compilerOptions": {
-    "module": "commonjs",
-    "target": "es2019",
-    "lib": ["es2019"],
-    "strict": true,
-    "declaration": true,
+    "target": "esnext",
     "skipLibCheck": true,
-    "noUnusedParameters": true,
-    "noUnusedLocals": true,
-    "noImplicitThis": true,
-    "noImplicitReturns": true,
-    "removeComments": true,
-    "noFallthroughCasesInSwitch": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
     "forceConsistentCasingInFileNames": true,
-    "noImplicitAny": true
+    "module": "ES2022",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "noEmit": true,
+    "noFallthroughCasesInSwitch": true,
+    "verbatimModuleSyntax": true,
+    "allowUnreachableCode": false,
+    "allowUnusedLabels": false,
+    "noImplicitOverride": true,
+    "noImplicitReturns": true,
+    "noUncheckedIndexedAccess": true,
+    "noUnusedLocals": true
   }
 }