fix(formatter_json): normalize CRLF for suppressed text (#23702)

The same as #23701, for JSON formatter.

.gitattributes

@@ -1,5 +1,7 @@
 crates/oxc_formatter/tests/fixtures/** text=auto eol=lf
 crates/oxc_formatter/tests/fixtures/js/crlf/** text=auto eol=crlf
+crates/oxc_formatter_json/tests/fixtures/** text=auto eol=lf
+crates/oxc_formatter_json/tests/fixtures/jsonc/crlf/** text=auto eol=crlf
 apps/oxfmt/test/**/fixtures/** text=auto eol=lf
 apps/oxlint/test/fixtures/** text=auto eol=lf
 

crates/oxc_formatter_json/src/comments.rs

@@ -3,8 +3,9 @@ use std::cell::Cell;
 use oxc_allocator::StringBuilder;
 use oxc_ast::Comment;
 use oxc_formatter_core::{
-    Buffer, Format, SourceText,
+    Buffer, Format, LINE_TERMINATORS, SourceText, arena_cow_str,
     builders::{empty_line, expand_parent, hard_line_break, line_suffix, space, text},
+    normalize_newlines,
     spec::is_suppression_marker,
     write,
 };
@@ -310,7 +311,11 @@ pub struct FormatSuppressedNode(pub Span);
 impl<'a> Format<'a, JsonFormatContext<'a>> for FormatSuppressedNode {
     fn fmt(&self, f: &mut JsonFormatter<'_, 'a>) {
         write!(f, FormatLeadingComments(self.0));
-        write!(f, text(f.context().source_text().text_for(&self.0)));
+        // The IR only supports `\n` as a line break. Normalize CRLF / CR / LS / PS to LF;
+        // the printer will re-emit the configured `LineEnding` at the final stage.
+        let raw = f.context().source_text().text_for(&self.0);
+        let normalized = normalize_newlines(raw, LINE_TERMINATORS);
+        write!(f, text(arena_cow_str(&normalized, f)));
         // The verbatim text already includes inside-span comments;
         // advance the cursor so they aren't re-emitted as leading comments of a later node.
         let _ = f.context().comments().take_before(self.0.end);

crates/oxc_formatter_json/tests/fixtures/jsonc/crlf/ignore.jsonc

@@ -0,0 +1,8 @@
+{
+  "a": 1,
+  // prettier-ignore
+  "b": {
+    "c":   2
+  },
+  "d": [1, 2, 3]
+}

crates/oxc_formatter_json/tests/fixtures/jsonc/crlf/ignore.jsonc.snap

@@ -0,0 +1,63 @@
+---
+source: crates/oxc_formatter_json/tests/fixtures/mod.rs
+---
+==================== Input ====================
+{
+  "a": 1,
+  // prettier-ignore
+  "b": {
+    "c":   2
+  },
+  "d": [1, 2, 3]
+}
+
+==================== Output ====================
+-----------------------------------------------------
+{ endOfLine: "lf", printWidth: 80, variant: "jsonc" }
+-----------------------------------------------------
+{
+  "a": 1,
+  // prettier-ignore
+  "b": {
+    "c":   2
+  },
+  "d": [1, 2, 3],
+}
+
+------------------------------------------------------
+{ endOfLine: "lf", printWidth: 100, variant: "jsonc" }
+------------------------------------------------------
+{
+  "a": 1,
+  // prettier-ignore
+  "b": {
+    "c":   2
+  },
+  "d": [1, 2, 3],
+}
+
+-------------------------------------------------------
+{ endOfLine: "crlf", printWidth: 80, variant: "jsonc" }
+-------------------------------------------------------
+{
+  "a": 1,
+  // prettier-ignore
+  "b": {
+    "c":   2
+  },
+  "d": [1, 2, 3],
+}
+
+--------------------------------------------------------
+{ endOfLine: "crlf", printWidth: 100, variant: "jsonc" }
+--------------------------------------------------------
+{
+  "a": 1,
+  // prettier-ignore
+  "b": {
+    "c":   2
+  },
+  "d": [1, 2, 3],
+}
+
+===================== End =====================

crates/oxc_formatter_json/tests/fixtures/jsonc/crlf/options.json

@@ -0,0 +1,4 @@
+[
+  { "variant": "jsonc", "endOfLine": "lf" },
+  { "variant": "jsonc", "endOfLine": "crlf" }
+]