fix (wip)

Author: baseballyama

README.md

@@ -12,7 +12,7 @@
 
 # svelte-eslint-parser
 
-## [Svelte](https://svelte.dev/) parser for [ESLint](https://eslint.org/).
+## [Svelte](https://svelte.dev/) parser for [ESLint](https://eslint.org/)
 
 [Live DEMO](https://sveltejs.github.io/svelte-eslint-parser/playground) •
 [Discord](https://svelte.dev/chat)
@@ -100,7 +100,7 @@ export default [
       parser: svelteParser,
       parserOptions: {
         sourceType: "module",
-        ecmaVersion: 2021,
+        ecmaVersion: 2022,
         ecmaFeatures: {
           globalReturn: false,
           impliedStrict: false,

explorer-v2/src/lib/ESLintPlayground.svelte

@@ -119,7 +119,7 @@
 					languageOptions: {
 						parser: svelteEslintParser,
 						parserOptions: {
-							ecmaVersion: 2020,
+							ecmaVersion: 2022,
 							sourceType: 'module',
 							parser: { ts: tsParser, typescript: tsParser }
 						},

src/parser/parser-options.ts

@@ -41,7 +41,7 @@ export type NormalizedParserOptions = {
 /** Normalize parserOptions */
 export function normalizeParserOptions(options: any): NormalizedParserOptions {
   const parserOptions = {
-    ecmaVersion: 2020,
+    ecmaVersion: 2022,
     sourceType: "module",
     loc: true,
     range: true,

src/parser/typescript/analyze/index.ts

@@ -441,7 +441,8 @@ function analyzeRuneVariables(
       // See https://github.com/sveltejs/svelte/blob/3fa3dd78a1cbaa88a1571977b76bf6f02ed4231d/packages/svelte/types/index.d.ts#L3416
       case "$props": {
         // Use type parameters to avoid `@typescript-eslint/no-unsafe-assignment` errors.
-        appendDeclareFunctionVirtualScripts(globalName, ["(): any"]);
+        // NOTE: In the Svelte repository's `index.d.ts`, the return type is any, but that triggers `@typescript-eslint/no-unsafe-assignment`. To avoid this, use generics here.
+        appendDeclareFunctionVirtualScripts(globalName, ["<T>(): T"]);
         appendDeclareNamespaceVirtualScripts(globalName, [
           "export function id(): string;",
         ]);

tests/fixtures/parser/ast/svelte5/async/_config.json

@@ -5,9 +5,5 @@
         "async": true
       }
     }
-  },
-  "parserOptions": {
-    "ecmaVersion": 2022,
-    "sourceType": "module"
   }
 }

tests/fixtures/parser/ast/svelte5/docs/snippets/10-typing-snippets-type-output.svelte

@@ -5,7 +5,7 @@
 		data: any[]; // data: any[]
 		children: Snippet; // children: Snippet<[]>, Snippet: Snippet<Parameters>
 		row: Snippet<[any]>; // row: Snippet<[any]>, Snippet: Snippet<Parameters>
-	} = $props(); // $props(): any
+	} = $props(); // $props(): { data: any[]; children: Snippet<[]>; row: Snippet<[any]>; }
 </script>
 
 <table>

tests/fixtures/parser/ast/svelte5/docs/snippets/11-typing-snippets-type-output.svelte

@@ -5,7 +5,7 @@
 		data: T[]; // data: unknown[], T: unknown
 		children: Snippet; // children: Snippet<[]>, Snippet: Snippet<Parameters>
 		row: Snippet<[T]>; // row: Snippet<[unknown]>, Snippet: Snippet<Parameters>, T: unknown
-	} = $props(); // $props(): any
+	} = $props(); // $props(): { data: unknown[]; children: Snippet<[]>; row: Snippet<[unknown]>; }
 </script>
 
 <table>

tests/fixtures/parser/ast/svelte5/generics01-snippets-type-output.svelte

@@ -6,7 +6,7 @@
 		data: A[]; // data: unknown[], A: unknown
 		children: Snippet; // children: Snippet<[]>, Snippet: Snippet<Parameters>
 		row: Snippet<[A]>; // row: Snippet<[unknown]>, Snippet: Snippet<Parameters>, A: unknown
-	} = $props(); // $props(): any
+	} = $props(); // $props(): { data: unknown[]; children: Snippet<[]>; row: Snippet<[unknown]>; }
 </script>
 
 <table>

tests/fixtures/parser/ast/svelte5/ts-$props01-type-output.svelte

@@ -5,7 +5,7 @@
     c: boolean; // c: boolean
     d: number; // d: number
   }
-  let { a, b, c, ...everythingElse }: MyProps = $props(); // a: number, a: number, b: string, b: string, c: boolean, c: boolean, everythingElse: { d: number; }, MyProps: MyProps, $props(): any
+  let { a, b, c, ...everythingElse }: MyProps = $props(); // a: number, a: number, b: string, b: string, c: boolean, c: boolean, everythingElse: { d: number; }, MyProps: MyProps, $props(): MyProps
 </script>
 
 {a} <!-- a: number -->

tests/fixtures/parser/ast/svelte5/ts-$props02-type-output.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  let { name }: { name: string } = $props(); // name: string, name: string, name: string, $props(): any
+  let { name }: { name: string } = $props(); // name: string, name: string, name: string, $props(): { name: string; }
 </script>
 
 {name} <!-- name: string -->