From 9c504f97ca0e1dada01ac0a904a9c3bd8da4e8b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mateusz=20Burzy=C5=84ski?= <mateuszburzynski@gmail.com>
Date: Tue, 14 Oct 2025 11:06:24 +0200
Subject: [PATCH] Allow line break before import attributes `with` keyword

---
 src/compiler/parser.ts                        |  2 +-
 .../reference/importAttributes11.symbols      | 24 ++++++++++++++
 .../reference/importAttributes11.types        | 31 +++++++++++++++++++
 .../importAttributes/importAttributes11.ts    | 21 +++++++++++++
 4 files changed, 77 insertions(+), 1 deletion(-)
 create mode 100644 tests/baselines/reference/importAttributes11.symbols
 create mode 100644 tests/baselines/reference/importAttributes11.types
 create mode 100644 tests/cases/conformance/importAttributes/importAttributes11.ts

diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 1759f267cdce9..d641cbd4b65e7 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -8435,7 +8435,7 @@ namespace Parser {
 
     function tryParseImportAttributes() {
         const currentToken = token();
-        if ((currentToken === SyntaxKind.WithKeyword || currentToken === SyntaxKind.AssertKeyword) && !scanner.hasPrecedingLineBreak()) {
+        if (currentToken === SyntaxKind.WithKeyword || (currentToken === SyntaxKind.AssertKeyword && !scanner.hasPrecedingLineBreak())) {
             return parseImportAttributes(currentToken);
         }
     }
diff --git a/tests/baselines/reference/importAttributes11.symbols b/tests/baselines/reference/importAttributes11.symbols
new file mode 100644
index 0000000000000..70150101f43cb
--- /dev/null
+++ b/tests/baselines/reference/importAttributes11.symbols
@@ -0,0 +1,24 @@
+//// [tests/cases/conformance/importAttributes/importAttributes11.ts] ////
+
+=== ./a.json ===
+{ "key": "value" }
+>"key" : Symbol("key", Decl(a.json, 0, 1))
+
+=== ./b.mts ===
+declare global {
+>global : Symbol(global, Decl(b.mts, 0, 0))
+
+    interface ImportAttributes {
+>ImportAttributes : Symbol(ImportAttributes, Decl(lib.es5.d.ts, --, --), Decl(b.mts, 0, 16))
+
+        type: "json"
+>type : Symbol(ImportAttributes.type, Decl(b.mts, 1, 32))
+    }
+}
+
+import a
+>a : Symbol(a, Decl(b.mts, 6, 6))
+
+	from "./a.json"
+	with {type: "json"}
+
diff --git a/tests/baselines/reference/importAttributes11.types b/tests/baselines/reference/importAttributes11.types
new file mode 100644
index 0000000000000..96a95348002b9
--- /dev/null
+++ b/tests/baselines/reference/importAttributes11.types
@@ -0,0 +1,31 @@
+//// [tests/cases/conformance/importAttributes/importAttributes11.ts] ////
+
+=== ./a.json ===
+{ "key": "value" }
+>{ "key": "value" } : { key: string; }
+>                   : ^^^^^^^^^^^^^^^^
+>"key" : string
+>      : ^^^^^^
+>"value" : "value"
+>        : ^^^^^^^
+
+=== ./b.mts ===
+declare global {
+>global : any
+>       : ^^^
+
+    interface ImportAttributes {
+        type: "json"
+>type : "json"
+>     : ^^^^^^
+    }
+}
+
+import a
+>a : { key: string; }
+>  : ^^^^^^^^^^^^^^^^
+
+	from "./a.json"
+	with {type: "json"}
+>type : error
+
diff --git a/tests/cases/conformance/importAttributes/importAttributes11.ts b/tests/cases/conformance/importAttributes/importAttributes11.ts
new file mode 100644
index 0000000000000..f3504d642b792
--- /dev/null
+++ b/tests/cases/conformance/importAttributes/importAttributes11.ts
@@ -0,0 +1,21 @@
+// @strict: true
+// @target: esnext
+// @module: nodenext
+// @moduleResolution: nodenext
+// @noEmit: true
+
+// https://github.com/microsoft/TypeScript/issues/62590
+
+// @filename: ./a.json
+{ "key": "value" }
+
+// @filename: ./b.mts
+declare global {
+    interface ImportAttributes {
+        type: "json"
+    }
+}
+
+import a
+	from "./a.json"
+	with {type: "json"}