Enable statistics reporting per program through temporary build api

Author: sheetalkamat

src/compiler/commandLineParser.ts

@@ -119,6 +119,18 @@ namespace ts {
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Enable_tracing_of_the_name_resolution_process
         },
+        {
+            name: "diagnostics",
+            type: "boolean",
+            category: Diagnostics.Advanced_Options,
+            description: Diagnostics.Show_diagnostic_information
+        },
+        {
+            name: "extendedDiagnostics",
+            type: "boolean",
+            category: Diagnostics.Advanced_Options,
+            description: Diagnostics.Show_verbose_diagnostic_information
+        },
     ];
 
     /* @internal */
@@ -592,18 +604,6 @@ namespace ts {
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Specify_the_JSX_factory_function_to_use_when_targeting_react_JSX_emit_e_g_React_createElement_or_h
         },
-        {
-            name: "diagnostics",
-            type: "boolean",
-            category: Diagnostics.Advanced_Options,
-            description: Diagnostics.Show_diagnostic_information
-        },
-        {
-            name: "extendedDiagnostics",
-            type: "boolean",
-            category: Diagnostics.Advanced_Options,
-            description: Diagnostics.Show_verbose_diagnostic_information
-        },
         {
             name: "resolveJsonModule",
             type: "boolean",

src/compiler/tsbuild.ts

@@ -32,6 +32,8 @@ namespace ts {
         pretty?: boolean;
 
         traceResolution?: boolean;
+        /* @internal */ diagnostics?: boolean;
+        /* @internal */ extendedDiagnostics?: boolean;
     }
 
     enum BuildResultFlags {
@@ -326,6 +328,11 @@ namespace ts {
 
         reportDiagnostic: DiagnosticReporter; // Technically we want to move it out and allow steps of actions on Solution, but for now just merge stuff in build host here
         reportSolutionBuilderStatus: DiagnosticReporter;
+
+        // TODO: To do better with watch mode and normal build mode api that creates program and emits files
+        // This currently helps enable --diagnostics and --extendedDiagnostics
+        beforeCreateProgram?(options: CompilerOptions): void;
+        afterProgramEmitAndDiagnostics?(program: Program): void;
     }
 
     export interface SolutionBuilderHost extends SolutionBuilderHostBase {
@@ -997,7 +1004,6 @@ namespace ts {
             }
         }
 
-
         function buildSingleProject(proj: ResolvedConfigFileName): BuildResultFlags {
             if (options.dry) {
                 reportStatus(Diagnostics.A_non_dry_build_would_build_project_0, proj);
@@ -1030,6 +1036,9 @@ namespace ts {
                 options: configFile.options,
                 configFileParsingDiagnostics: configFile.errors
             };
+            if (host.beforeCreateProgram) {
+                host.beforeCreateProgram(options);
+            }
             const program = createProgram(programOptions);
 
             // Don't emit anything in the presence of syntactic errors or options diagnostics
@@ -1089,12 +1098,18 @@ namespace ts {
             };
             diagnostics.removeKey(proj);
             projectStatus.setValue(proj, status);
+            if (host.afterProgramEmitAndDiagnostics) {
+                host.afterProgramEmitAndDiagnostics(program);
+            }
             return resultFlags;
 
             function buildErrors(diagnostics: ReadonlyArray<Diagnostic>, errorFlags: BuildResultFlags, errorType: string) {
                 resultFlags |= errorFlags;
                 reportAndStoreErrors(proj, diagnostics);
                 projectStatus.setValue(proj, { type: UpToDateStatusType.Unbuildable, reason: `${errorType} errors` });
+                if (host.afterProgramEmitAndDiagnostics) {
+                    host.afterProgramEmitAndDiagnostics(program);
+                }
                 return resultFlags;
             }
         }

src/tsc/tsc.ts

@@ -199,11 +199,14 @@ namespace ts {
             reportWatchModeWithoutSysSupport();
         }
 
-        // TODO: change this to host if watch => watchHost otherwiue without wathc
-        const builder = createSolutionBuilder(buildOptions.watch ?
+        // TODO: change this to host if watch => watchHost otherwiue without watch
+        const buildHost = buildOptions.watch ?
             createSolutionBuilderWithWatchHost(sys, reportDiagnostic, createBuilderStatusReporter(sys, shouldBePretty()), createWatchStatusReporter()) :
-            createSolutionBuilderHost(sys, reportDiagnostic, createBuilderStatusReporter(sys, shouldBePretty()), createReportErrorSummary(buildOptions)),
-            projects, buildOptions);
+            createSolutionBuilderHost(sys, reportDiagnostic, createBuilderStatusReporter(sys, shouldBePretty()), createReportErrorSummary(buildOptions));
+        buildHost.beforeCreateProgram = enableStatistics;
+        buildHost.afterProgramEmitAndDiagnostics = reportStatistics;
+
+        const builder = createSolutionBuilder(buildHost, projects, buildOptions);
         if (buildOptions.clean) {
             return sys.exit(builder.cleanAllProjects());
         }