fix(tsbuild): Improve diagnostic error handling and summary reporting for TypeScript compilation by refactoring diagnostic processing and adding pre-emit error checks.

ts/tsbuild.exports.ts

@@ -6,6 +6,19 @@ export type { CompilerOptions, ScriptTarget, ModuleKind };
 
 export * from './tsbuild.classes.tsbuild.js';
 
+/**
+ * compile an array of absolute file paths with error tracking
+ */
+export let compileFileArrayWithErrorTracking = async (
+  fileStringArrayArg: string[],
+  compilerOptionsArg: CompilerOptions = {},
+  argvArg?: any
+): Promise<{ emittedFiles: any[], errorSummary: import('./tsbuild.classes.tsbuild.js').IErrorSummary }> => {
+  const { TsBuild } = await import('./tsbuild.classes.tsbuild.js');
+  const tsBuild = new TsBuild(fileStringArrayArg, compilerOptionsArg, argvArg);
+  return tsBuild.compileWithErrorTracking();
+};
+
 /**
  * compile am array of absolute file paths
  */
@@ -17,6 +30,75 @@ export let compileFileArray = (
   return compiler(fileStringArrayArg, mergeCompilerOptions(compilerOptionsArg, argvArg), argvArg);
 };
 
+/**
+ * Helper function to merge error summaries
+ */
+function mergeErrorSummaries(summaries: import('./tsbuild.classes.tsbuild.js').IErrorSummary[]): import('./tsbuild.classes.tsbuild.js').IErrorSummary {
+  const mergedErrorsByFile: Record<string, plugins.typescript.Diagnostic[]> = {};
+  const mergedGeneralErrors: plugins.typescript.Diagnostic[] = [];
+  let totalErrors = 0;
+  
+  summaries.forEach(summary => {
+    // Merge errors by file
+    Object.entries(summary.errorsByFile).forEach(([fileName, errors]) => {
+      if (!mergedErrorsByFile[fileName]) {
+        mergedErrorsByFile[fileName] = [];
+      }
+      mergedErrorsByFile[fileName] = mergedErrorsByFile[fileName].concat(errors);
+    });
+    
+    // Merge general errors
+    mergedGeneralErrors.push(...summary.generalErrors);
+    totalErrors += summary.totalErrors;
+  });
+  
+  return {
+    errorsByFile: mergedErrorsByFile,
+    generalErrors: mergedGeneralErrors,
+    totalErrors,
+    totalFiles: Object.keys(mergedErrorsByFile).length
+  };
+}
+
+/**
+ * Helper function to display final compilation summary
+ */
+function displayFinalErrorSummary(errorSummary: import('./tsbuild.classes.tsbuild.js').IErrorSummary): void {
+  if (errorSummary.totalErrors === 0) {
+    console.log('\n📊 \x1b[32mCompilation Summary: All tasks completed successfully! ✅\x1b[0m\n');
+    return;
+  }
+  
+  const colors = {
+    reset: '\x1b[0m',
+    red: '\x1b[31m',
+    yellow: '\x1b[33m',
+    cyan: '\x1b[36m',
+    brightRed: '\x1b[91m',
+    brightYellow: '\x1b[93m'
+  };
+  
+  console.log('\n' + '='.repeat(80));
+  console.log(`📊 ${colors.brightYellow}Final Compilation Summary${colors.reset}`);
+  console.log('='.repeat(80));
+  
+  if (errorSummary.totalFiles > 0) {
+    console.log(`${colors.brightRed}❌ Files with errors (${errorSummary.totalFiles}):${colors.reset}`);
+    
+    Object.entries(errorSummary.errorsByFile).forEach(([fileName, errors]) => {
+      const displayPath = fileName.replace(process.cwd(), '').replace(/^\//, '');
+      console.log(`  ${colors.red}•${colors.reset} ${colors.cyan}${displayPath}${colors.reset} ${colors.yellow}(${errors.length} error${errors.length !== 1 ? 's' : ''})${colors.reset}`);
+    });
+  }
+  
+  if (errorSummary.generalErrors.length > 0) {
+    console.log(`${colors.brightRed}❌ General errors: ${errorSummary.generalErrors.length}${colors.reset}`);
+  }
+  
+  console.log(`\n${colors.brightRed}Total: ${errorSummary.totalErrors} error${errorSummary.totalErrors !== 1 ? 's' : ''} across ${errorSummary.totalFiles} file${errorSummary.totalFiles !== 1 ? 's' : ''}${colors.reset}`);
+  console.log('='.repeat(80) + '\n');
+}
+
 /**
  * compile advanced glob configurations
  * @param globStringArrayArg a array of glob strings
@@ -31,6 +113,7 @@ export let compileGlobStringObject = async (
   argvArg?: any
 ) => {
   let compiledFiles: any[] = [];
+  const errorSummaries: import('./tsbuild.classes.tsbuild.js').IErrorSummary[] = [];
   
   // Log the compilation tasks in a nice format
   console.log('\n👷 TypeScript Compilation Tasks:');
@@ -69,12 +152,16 @@ export let compileGlobStringObject = async (
         outDir: destDir,
       };
       
-      // Compile the files and correctly concat the results
-      // Fixed: removed duplicating compiledFiles in the concat operation
-      const newlyCompiledFiles = await compileFileArray(absoluteFilePathArray, updatedTsOptions, argvArg);
-      compiledFiles = compiledFiles.concat(newlyCompiledFiles);
+      // Compile with error tracking
+      const result = await compileFileArrayWithErrorTracking(absoluteFilePathArray, updatedTsOptions, argvArg);
+      compiledFiles = compiledFiles.concat(result.emittedFiles);
+      errorSummaries.push(result.errorSummary);
     }
   }
   
+  // Display final error summary after all compilation tasks
+  const finalErrorSummary = mergeErrorSummaries(errorSummaries);
+  displayFinalErrorSummary(finalErrorSummary);
+  
   return compiledFiles;
 };