fix: preserve trailing empty suffix in ɵɵtextInterpolateN calls

ɵɵtextInterpolate1/2/...N always require all positional string args
including the trailing suffix. When the suffix was an empty string, it
was incorrectly dropped, causing `undefined` to be concatenated at
runtime (e.g. `#1undefined` instead of `#1`).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: BenjaminDobler

crates/oxc_angular_compiler/src/pipeline/phases/reify/mod.rs

@@ -874,13 +874,15 @@ fn reify_update_op<'a>(
             }
         }
         UpdateOp::InterpolateText(interp) => {
-            // Handle multiple interpolations like "{{a}} and {{b}}"
+            // Handle multiple interpolations like "{{a}} and {{b}}" or "#{{a}}"
+            // has_extra_args must be true to preserve trailing empty strings —
+            // ɵɵtextInterpolateN always requires all positional string args.
             let (args, expr_count) = reify_interpolation(
                 allocator,
                 &interp.interpolation,
                 expressions,
                 root_xref,
-                false,
+                true,
             );
             Some(create_text_interpolate_stmt_with_args(allocator, args, expr_count))
         }

crates/oxc_angular_compiler/tests/integration_test.rs

@@ -171,7 +171,7 @@ fn test_html_entity_between_interpolations() {
     // Should produce: textInterpolate2("", ctx.a, "×", ctx.b)
     // Note: × (multiplication sign) = U+00D7, emitted as raw UTF-8
     assert!(
-        js.contains("textInterpolate2(\"\",ctx.a,\"\u{00D7}\",ctx.b)"),
+        js.contains("textInterpolate2(\"\",ctx.a,\"\u{00D7}\",ctx.b,\"\")"),
         "Expected textInterpolate2 with raw times character. Got:\n{js}"
     );
 }
@@ -183,7 +183,7 @@ fn test_html_entity_at_start_of_interpolation() {
     // Should produce: textInterpolate1("×", ctx.a)
     // Note: × (multiplication sign) = U+00D7, emitted as raw UTF-8
     assert!(
-        js.contains("textInterpolate1(\"\u{00D7}\",ctx.a)")
+        js.contains("textInterpolate1(\"\u{00D7}\",ctx.a,\"\")")
             || js.contains("textInterpolate(\"\u{00D7}\",ctx.a)"),
         "Expected textInterpolate with raw times character at start. Got:\n{js}"
     );
@@ -197,7 +197,7 @@ fn test_multiple_html_entities_between_interpolations() {
     // Should produce: textInterpolate2("", ctx.a, "\u{00A0}×\u{00A0}", ctx.b)
     // Note:   = U+00A0, × = U+00D7, both emitted as raw UTF-8
     assert!(
-        js.contains("textInterpolate2(\"\",ctx.a,\"\u{00A0}\u{00D7}\u{00A0}\",ctx.b)"),
+        js.contains("textInterpolate2(\"\",ctx.a,\"\u{00A0}\u{00D7}\u{00A0}\",ctx.b,\"\")"),
         "Expected textInterpolate2 with raw Unicode entities. Got:\n{js}"
     );
 }

crates/oxc_angular_compiler/tests/snapshots/integration_test__for_listener_with_index.snap

@@ -20,7 +20,7 @@ function TestComponent_For_1_Template(rf,ctx) {
   if ((rf & 2)) {
     const ɵ$index_1_r2 = ctx.$index;
     i0.ɵɵadvance(2);
-    i0.ɵɵtextInterpolate1("Remove #",ɵ$index_1_r2);
+    i0.ɵɵtextInterpolate1("Remove #",ɵ$index_1_r2,"");
   }
 }
 function TestComponent_Template(rf,ctx) {

crates/oxc_angular_compiler/tests/snapshots/integration_test__for_with_context_variables.snap

@@ -18,7 +18,7 @@ function TestComponent_For_1_Template(rf,ctx) {
     i0.ɵɵadvance();
     i0.ɵɵclassProp("first",(ɵ$index_1_r2 === 0))("last",(ɵ$index_1_r2 === (ɵ$count_1_r3 - 1)));
     i0.ɵɵadvance();
-    i0.ɵɵtextInterpolate2("",ɵ$index_1_r2,": ",item_r1.name);
+    i0.ɵɵtextInterpolate2("",ɵ$index_1_r2,": ",item_r1.name,"");
   }
 }
 function TestComponent_Template(rf,ctx) {

crates/oxc_angular_compiler/tests/snapshots/integration_test__multiple_interpolations.snap

@@ -10,6 +10,6 @@ function TestComponent_Template(rf,ctx) {
   }
   if ((rf & 2)) {
     i0.ɵɵadvance();
-    i0.ɵɵtextInterpolate2("",ctx.first," and ",ctx.second);
+    i0.ɵɵtextInterpolate2("",ctx.first," and ",ctx.second,"");
   }
 }