Improve TypeScript config (#12)

.vscode/settings.json

@@ -1,3 +1,3 @@
 {
-	"eslint.experimental.useFlatConfig": true,
+	"eslint.useFlatConfig": true,
 }

package.json

@@ -27,16 +27,17 @@
 	},
 	"dependencies": {
 		"@eslint/js": "^8.57.0",
-		"@stylistic/eslint-plugin": "^2.2.1",
-		"eslint-plugin-react": "^7.34.1",
+		"@stylistic/eslint-plugin": "^2.3.0",
+		"eslint-plugin-react": "^7.35.0",
 		"eslint-plugin-react-hooks": "^4.6.2",
-		"globals": "^15.6.0",
-		"typescript-eslint": "^7.13.1"
+		"globals": "^15.9.0",
+		"typescript-eslint": "^7.18.0"
 	},
 	"devDependencies": {
+		"@types/eslint": "^8.56.11",
 		"@types/eslint__js": "^8.42.3",
 		"eslint": "^8.57.0",
-		"typescript": "^5.4.5"
+		"typescript": "^5.5.4"
 	},
 	"peerDependencies": {
 		"eslint": ">=8.21.0 <9.0.0"

src/@types/eslint-plugin-react-hooks.d.ts

@@ -1,4 +1,5 @@
 // This is only a type-shim and is not meant to be a perfect representation
+// https://github.com/facebook/react/issues/30119
 
 declare module 'eslint-plugin-react-hooks' {
 	import type { ESLint } from 'eslint';

src/@types/eslint-plugin-react.d.ts

@@ -1,4 +1,5 @@
 // This is only a type-shim and is not meant to be a perfect representation
+// https://github.com/jsx-eslint/eslint-plugin-react/issues/3776
 
 declare module 'eslint-plugin-react' {
 	import type { ESLint } from 'eslint';

src/react.ts

@@ -3,14 +3,13 @@ import reactHooksPlugin from 'eslint-plugin-react-hooks';
 import type { Linter } from 'eslint';
 import globals from 'globals';
 
-import { javascript } from './javascript.js';
-
 /** @returns ESLint configuration for React. */
 export function react(): Linter.FlatConfig[] {
 	return [
 		// Make sure to give browser globals to all other project files, not just JSX files
 		{
-			files: javascript()[0]?.files,
+			// FIXME Reused code from src/javascript.ts - abstract out
+			files: ['**/*.{m,c,}{js,ts}{x,}'],
 			languageOptions: {
 				globals: globals.browser,
 			},

src/typescript.ts

@@ -32,7 +32,7 @@ export function typescript(): Linter.FlatConfig[] {
 				...tsESLint.configs.stylisticTypeChecked[2]?.rules,
 
 				// Overrides
-				'no-shadow': 0, // handled by TypeScript
+				'no-shadow': 0, // TODO Replace with @typescript-eslint/no-shadow (breaking change)
 			},
 		},
 	];

tsconfig.json

@@ -6,12 +6,14 @@
 		"outDir": "dist",
 		"declaration": true,
 		"strict": true,
-		"noFallthroughCasesInSwitch": true,
-		"noImplicitOverride": true,
+		"noUncheckedIndexedAccess": true,
+		"exactOptionalPropertyTypes": true,
 		"noImplicitReturns": true,
+		"noImplicitOverride": true,
 		"noPropertyAccessFromIndexSignature": true,
-		"noUncheckedIndexedAccess": true,
 		"verbatimModuleSyntax": true,
+		"isolatedModules": true,
+		"isolatedDeclarations": true,
 
 		// For the globals package
 		"resolveJsonModule": true,