feat(no-top-level-await): add support for await using (#447)

Author: ota-meshi

lib/rules/no-top-level-await.js

@@ -120,7 +120,9 @@ module.exports = {
             ":function:exit"() {
                 functionDepth--
             },
-            "AwaitExpression, ForOfStatement[await=true]"(node) {
+            "AwaitExpression, ForOfStatement[await=true], VariableDeclaration[kind='await using']"(
+                node
+            ) {
                 if (functionDepth > 0) {
                     // not top-level
                     return

tests/lib/rules/no-top-level-await.js

@@ -7,6 +7,7 @@
 const { RuleTester } = require("#test-helpers")
 const rule = require("../../../lib/rules/no-top-level-await.js")
 const path = require("path")
+const tsParser = require("@typescript-eslint/parser")
 
 /**
  * Makes a file path to a fixture.
@@ -100,6 +101,12 @@ new RuleTester({
                 },
             ],
         },
+        // await using
+        {
+            filename: fixture("simple-files/lib/a.js"),
+            code: "async function f() { await using foo = x }",
+            languageOptions: { parser: tsParser },
+        },
         // files field of `package.json` with convertPath
         {
             filename: fixture("simple-files/test/a.ts"),
@@ -230,5 +237,19 @@ new RuleTester({
                 },
             ],
         },
+        // await using
+        {
+            filename: fixture("simple-files/lib/a.js"),
+            code: "await using foo = x",
+            languageOptions: { parser: tsParser },
+            errors: [
+                {
+                    message:
+                        "Top-level `await` is forbidden in published modules.",
+                    line: 1,
+                    column: 1,
+                },
+            ],
+        },
     ],
 })