Fixes missing error exit code when a bogus input file is specified

Fixes microsoft#33849.

Author: elibarzilay

src/compiler/tsbuild.ts

@@ -1788,31 +1788,25 @@ namespace ts {
 
         let reportQueue = true;
         let successfulProjects = 0;
-        let errorProjects = 0;
         while (true) {
             const invalidatedProject = getNextInvalidatedProject(state, buildOrder, reportQueue);
             if (!invalidatedProject) break;
             reportQueue = false;
             invalidatedProject.done(cancellationToken);
-            if (state.diagnostics.has(invalidatedProject.projectPath)) {
-                errorProjects++;
-            }
-            else {
-                successfulProjects++;
-            }
+            if (!state.diagnostics.has(invalidatedProject.projectPath)) successfulProjects++;
         }
 
         disableCache(state);
         reportErrorSummary(state, buildOrder);
         startWatching(state, buildOrder);
 
-        return isCircularBuildOrder(buildOrder) ?
-            ExitStatus.ProjectReferenceCycle_OutputsSkipped :
-            errorProjects ?
-                successfulProjects ?
-                    ExitStatus.DiagnosticsPresent_OutputsGenerated :
-                    ExitStatus.DiagnosticsPresent_OutputsSkipped :
-                ExitStatus.Success;
+        return isCircularBuildOrder(buildOrder)
+            ? ExitStatus.ProjectReferenceCycle_OutputsSkipped
+            : !buildOrder.some(p => state.diagnostics.has(toResolvedConfigFilePath(state, p)))
+                ? ExitStatus.Success
+                : successfulProjects
+                    ? ExitStatus.DiagnosticsPresent_OutputsGenerated
+                    : ExitStatus.DiagnosticsPresent_OutputsSkipped;
     }
 
     function clean(state: SolutionBuilderState, project?: string, onlyReferences?: boolean) {

src/testRunner/unittests/tsbuild/demo.ts

@@ -39,17 +39,19 @@ namespace ts {
 
         interface VerifyBuild {
             modifyDiskLayout: (fs: vfs.FileSystem) => void;
+            tsconfigs?: readonly string[];
             expectedExitStatus: ExitStatus;
             expectedDiagnostics: (fs: vfs.FileSystem) => fakes.ExpectedDiagnostic[];
             expectedOutputs: readonly string[];
             notExpectedOutputs: readonly string[];
         }
 
-        function verifyBuild({ modifyDiskLayout, expectedExitStatus, expectedDiagnostics, expectedOutputs, notExpectedOutputs }: VerifyBuild) {
+        function verifyBuild({ modifyDiskLayout, tsconfigs = ["/src/tsconfig.json"],
+                               expectedExitStatus, expectedDiagnostics, expectedOutputs, notExpectedOutputs }: VerifyBuild) {
             const fs = projFs.shadow();
             const host = fakes.SolutionBuilderHost.create(fs);
             modifyDiskLayout(fs);
-            const builder = createSolutionBuilder(host, ["/src/tsconfig.json"], { verbose: true });
+            const builder = createSolutionBuilder(host, tsconfigs, { verbose: true });
             const exitStatus = builder.build();
             assert.equal(exitStatus, expectedExitStatus);
             host.assertDiagnosticMessages(...expectedDiagnostics(fs));
@@ -156,5 +158,19 @@ namespace ts {
                 notExpectedOutputs: [...coreOutputs(), ...animalOutputs(), ...zooOutputs()]
             });
         });
+
+        it("returns an error exit in case of a bogus file", () => {
+            verifyBuild({
+                modifyDiskLayout: noop,
+                tsconfigs: ["bogus.json"],
+                expectedExitStatus: ExitStatus.DiagnosticsPresent_OutputsSkipped,
+                expectedDiagnostics: _ => [
+                    getExpectedDiagnosticForProjectsInBuild("bogus.json"),
+                    errorDiagnostic([Diagnostics.File_0_not_found, "/bogus.json"]),
+                ],
+                expectedOutputs: emptyArray,
+                notExpectedOutputs: [...coreOutputs(), ...animalOutputs(), ...zooOutputs()]
+            });
+        });
     });
 }