From 30638d4525b8dc260cb11488088aa7393083227a Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Thu, 8 Jul 2021 14:42:44 -0400
Subject: [PATCH] fix(@ngtools/webpack): avoid non-actionable template
 type-checker syntax diagnostics

The AOT compiler's internal template type-checking files are not intended to be directly analyzed for diagnostics by the emitting program and are instead analyzed during the template type-checking phase. Previously, only semantic diagnostics were ignored. Now both syntactic and semantic diagnostics are ignored. This change prevents non-actionable diagnostics from being shown during a build.

Addresses: https://github.com/angular/angular/issues/42667
(cherry picked from commit 720feee34f910fc11c40e2f68d919d61b7d6cbec)
---
 packages/ngtools/webpack/src/ivy/plugin.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/ngtools/webpack/src/ivy/plugin.ts b/packages/ngtools/webpack/src/ivy/plugin.ts
index 14e2b2c35931..7ba6e89bcd09 100644
--- a/packages/ngtools/webpack/src/ivy/plugin.ts
+++ b/packages/ngtools/webpack/src/ivy/plugin.ts
@@ -491,18 +491,18 @@ export class AngularWebpackPlugin {
       }
     }
 
-    // Collect non-semantic diagnostics
+    // Collect program level diagnostics
     const diagnostics = [
       ...angularCompiler.getOptionDiagnostics(),
       ...builder.getOptionsDiagnostics(),
       ...builder.getGlobalDiagnostics(),
-      ...builder.getSyntacticDiagnostics(),
     ];
     diagnosticsReporter(diagnostics);
 
-    // Collect semantic diagnostics
+    // Collect source file specific diagnostics
     for (const sourceFile of builder.getSourceFiles()) {
       if (!ignoreForDiagnostics.has(sourceFile)) {
+        diagnosticsReporter(builder.getSyntacticDiagnostics(sourceFile));
         diagnosticsReporter(builder.getSemanticDiagnostics(sourceFile));
       }
     }