fix(tsbuild): Avoid process.exit in library, add confirmskiplibcheck flag, improve CLI exit handling and JSON/quiet modes, update test script

ts/tsbuild.exports.ts

@@ -130,12 +130,16 @@ export let compileGlobStringObject = async (
   const totalTasks = Object.keys(globStringObjectArg).length;
   let currentTask = 0;
   
-  // Log the compilation tasks in a nice format
-  console.log(`\n👷 TypeScript Compilation Tasks (${totalTasks} task${totalTasks !== 1 ? 's' : ''}):`);
-  Object.entries(globStringObjectArg).forEach(([source, dest]) => {
-    console.log(`  📂 ${source} → ${dest}`);
-  });
-  console.log('');
+  // Log the compilation tasks in a nice format (skip for --quiet or --json)
+  const isQuiet = argvArg?.quiet === true;
+  const isJson = argvArg?.json === true;
+  if (!isQuiet && !isJson) {
+    console.log(`\n👷 TypeScript Compilation Tasks (${totalTasks} task${totalTasks !== 1 ? 's' : ''}):`);
+    Object.entries(globStringObjectArg).forEach(([source, dest]) => {
+      console.log(`  📂 ${source} → ${dest}`);
+    });
+    console.log('');
+  }
   
   for (const keyArg in globStringObjectArg) {
     // Type safety check for key
@@ -185,7 +189,35 @@ export let compileGlobStringObject = async (
   
   // Display final error summary after all compilation tasks
   const finalErrorSummary = mergeErrorSummaries(errorSummaries);
-  displayFinalErrorSummary(finalErrorSummary);
-  
+
+  // Output summary based on mode
+  if (isJson) {
+    const result = {
+      success: finalErrorSummary.totalErrors === 0,
+      totals: {
+        errors: finalErrorSummary.totalErrors,
+        filesWithErrors: finalErrorSummary.totalFiles,
+        tasks: totalTasks,
+      },
+      errorsByFile: Object.fromEntries(
+        Object.entries(finalErrorSummary.errorsByFile).map(([file, diags]) => [
+          file,
+          diags.map(d => ({
+            code: d.code,
+            message: plugins.typescript.flattenDiagnosticMessageText(d.messageText as any, '\n'),
+          }))
+        ])
+      ),
+    };
+    console.log(JSON.stringify(result));
+  } else if (!isQuiet) {
+    displayFinalErrorSummary(finalErrorSummary);
+  }
+
+  // Attach summary to argvArg so CLI can decide exit behavior
+  if (argvArg && typeof argvArg === 'object') {
+    (argvArg as any).__tsbuildFinalErrorSummary = finalErrorSummary;
+  }
+
   return compiledFiles;
-};
+};