chore: add linting, knip, CI

.eslintrc.cjs

@@ -1,30 +1,23 @@
 module.exports = {
 	root: true,
-	extends: [
-		'eslint:recommended',
-		'plugin:@typescript-eslint/recommended',
-		'plugin:svelte/recommended',
-		'prettier'
-	],
 	parser: '@typescript-eslint/parser',
-	plugins: ['@typescript-eslint'],
+	extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended', 'prettier'],
+	plugins: ['svelte3', '@typescript-eslint'],
+	ignorePatterns: ['*.cjs'],
+	overrides: [{ files: ['*.svelte'], processor: 'svelte3/svelte3' }],
+	settings: {
+		'svelte3/typescript': () => require('typescript'),
+	},
 	parserOptions: {
 		sourceType: 'module',
 		ecmaVersion: 2020,
-		extraFileExtensions: ['.svelte']
 	},
 	env: {
 		browser: true,
 		es2017: true,
-		node: true
+		node: true,
+	},
+	globals: {
+		svelte: true,
 	},
-	overrides: [
-		{
-			files: ['*.svelte'],
-			parser: 'svelte-eslint-parser',
-			parserOptions: {
-				parser: '@typescript-eslint/parser'
-			}
-		}
-	]
-};
+}

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: 'weekly'

.github/workflows/check.yaml

@@ -0,0 +1,38 @@
+name: Check
+
+on:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Use Node.js 18
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+
+      - uses: pnpm/action-setup@v2
+        with:
+          version: 7
+
+      - name: Install npm deps
+        run: pnpm install --frozen-lockfile
+
+      - name: Check the build
+        run: pnpm run check
+
+      - name: Code linting
+        run: pnpm run lint
+
+      - name: Check dependencies, unused code
+        run: pnpm run knip

.prettierrc

@@ -1,9 +1,9 @@
 {
 	"useTabs": true,
 	"singleQuote": true,
-	"trailingComma": "none",
+	"semi": false,
+	"trailingComma": "all",
 	"printWidth": 100,
 	"plugins": ["prettier-plugin-svelte"],
-	"pluginSearchDirs": ["."],
 	"overrides": [{ "files": "*.svelte", "options": { "parser": "svelte" } }]
 }

knip.ts

@@ -0,0 +1,35 @@
+import sveltePreprocess from 'svelte-preprocess'
+import { preprocess, compile } from 'svelte/compiler'
+import type { KnipConfig } from 'knip'
+
+const sveltePreprocessor = sveltePreprocess()
+
+const config: KnipConfig = {
+	ignore: [
+		'**/*.d.ts',
+		'**/schemas.ts',
+		'src/lib/objects/hello-world/index.ts',
+		'src/lib/objects/external/iframe.svelte',
+		'src/lib/objects/split/types.ts',
+		'src/lib/objects/split/contracts/**/*',
+	],
+	paths: {
+		// This ain't pretty, but Svelte basically does the same
+		'$app/*': ['node_modules/@sveltejs/kit/src/runtime/app/*'],
+		'$env/*': ['.svelte-kit/ambient.d.ts'],
+		'$lib/*': ['src/lib/*'],
+	},
+	compilers: {
+		svelte: async (text: string) => {
+			const processed = await preprocess(text, sveltePreprocessor, { filename: 'dummy.ts' })
+			const compiled = compile(processed.code)
+			return compiled.js.code
+		},
+		css: (text: string) => [...text.matchAll(/(?<=@)import[^;]+/g)].join('\n'),
+	},
+	ignoreExportsUsedInFile: true,
+	ignoreBinaries: ['docker'],
+	ignoreDependencies: ['@typechain/ethers-v6'],
+}
+
+export default config

package.json

@@ -10,10 +10,11 @@
 		"test": "npm run test:integration && npm run test:unit",
 		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
 		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
-		"lint": "prettier --plugin-search-dir . --check . && eslint .",
-		"format": "prettier --plugin-search-dir . --write .",
+		"lint": "prettier --plugin prettier-plugin-svelte --check . && eslint .",
+		"format": "prettier --plugin prettier-plugin-svelte --write .",
 		"test:integration": "playwright test",
-		"test:unit": "vitest"
+		"test:unit": "vitest",
+		"knip": "knip"
 	},
 	"exports": {
 		".": {
@@ -30,24 +31,25 @@
 		"svelte": "^4.0.0"
 	},
 	"devDependencies": {
-		"@playwright/test": "^1.28.1",
-		"@sveltejs/adapter-auto": "^2.0.0",
-		"@sveltejs/kit": "^1.20.4",
-		"@sveltejs/package": "^2.0.0",
-		"@typescript-eslint/eslint-plugin": "^6.0.0",
-		"@typescript-eslint/parser": "^6.0.0",
-		"eslint": "^8.28.0",
-		"eslint-config-prettier": "^8.5.0",
-		"eslint-plugin-svelte": "^2.30.0",
-		"prettier": "^2.8.0",
-		"prettier-plugin-svelte": "^2.10.1",
-		"publint": "^0.1.9",
-		"svelte": "^4.0.5",
-		"svelte-check": "^3.4.3",
-		"tslib": "^2.4.1",
-		"typescript": "^5.0.0",
-		"vite": "^4.4.2",
-		"vitest": "^0.32.2"
+		"@playwright/test": "^1.39.0",
+		"@sveltejs/adapter-auto": "^2.1.0",
+		"@sveltejs/kit": "^1.27.1",
+		"@sveltejs/package": "^2.2.2",
+		"@typescript-eslint/eslint-plugin": "^6.9.0",
+		"@typescript-eslint/parser": "^6.9.0",
+		"eslint": "^8.52.0",
+		"eslint-config-prettier": "^9.0.0",
+		"eslint-plugin-svelte": "^2.34.0",
+		"knip": "2.17.1",
+		"prettier": "^3.0.3",
+		"prettier-plugin-svelte": "^3.0.3",
+		"publint": "^0.2.5",
+		"svelte": "^4.2.2",
+		"svelte-check": "^3.5.2",
+		"tslib": "^2.6.2",
+		"typescript": "^5.2.2",
+		"vite": "^4.5.0",
+		"vitest": "^0.34.6"
 	},
 	"svelte": "./dist/index.js",
 	"types": "./dist/index.d.ts",

playwright.config.ts

@@ -1,12 +1,12 @@
-import type { PlaywrightTestConfig } from '@playwright/test';
+import type { PlaywrightTestConfig } from '@playwright/test'
 
 const config: PlaywrightTestConfig = {
 	webServer: {
 		command: 'npm run build && npm run preview',
-		port: 4173
+		port: 4173,
 	},
 	testDir: 'tests',
-	testMatch: /(.+\.)?(test|spec)\.[jt]s/
-};
+	testMatch: /(.+\.)?(test|spec)\.[jt]s/,
+}
 
-export default config;
+export default config