v4.2.6

Restructured compileGlob() into three distinct phases:
1. Resolve glob patterns and clean ALL output directories upfront
2. Compile all TypeScript tasks (no filesystem cleanup during this phase)
3. Unpack all outputs after all compilations complete

This prevents XFS metadata corruption from rm operations overlapping
with TypeScript compilation writes to sibling directories.

changelog.md

@@ -1,5 +1,47 @@
 # Changelog
 
+## 2026-03-05 - 4.2.6 - fix(meta)
+no changes
+
+- Current package version: 4.2.5
+- No code or file changes detected in this commit; no release required
+
+## 2026-03-05 - 4.2.5 - fix(compiler)
+yield to the event loop after TypeScript emit to allow pending microtasks and I/O to settle before reading or modifying the output directory
+
+- Added await new Promise(resolve => process.nextTick(resolve)) immediately after program.emit()
+- Prevents race conditions by allowing libuv write completions and other deferred callbacks to complete before accessing the output directory
+- File changed: ts/mod_compiler/classes.tscompiler.ts
+
+## 2026-03-05 - 4.2.4 - fix(fshelpers)
+remove outdated comment about using synchronous rm to avoid XFS metadata corruption
+
+- Comment-only change in ts/mod_fs/classes.fshelpers.ts; no runtime or API behavior changes
+- Bump patch version from 4.2.3 to 4.2.4
+
+## 2026-03-05 - 4.2.3 - fix(compiler)
+defer unpacking until after all compilations and remove diagnostic filesystem syncs to avoid XFS metadata visibility issues
+
+- Queue pending unpack operations during compilation and run them after all compile tasks complete to avoid modifying output directories while other compilations are writing.
+- Remove TypeScript sys interception, execSync('sync') calls, and per-unpack fs.fsyncSync usage that attempted to work around XFS delayed metadata commits; rely on performing all unpacks after compilation instead.
+- Clean up noisy diagnostic code (external 'ls' comparisons, readdir snapshots) and simplify logging of unpack results.
+- Remove unused imports (fs and child_process.execSync) from the compiler module.
+
+## 2026-03-05 - 4.2.2 - fix(compiler)
+force global filesystem sync to flush XFS delayed logging and add diagnostics comparing Node's readdirSync with system ls to detect directory entry inconsistencies
+
+- Replace per-directory fs.fsyncSync loop with execSync('sync') to ensure parent B+tree metadata is flushed on XFS
+- Import execSync from child_process
+- Add diagnostic comparison: run ls -1 and compare its entries to fs.readdirSync; log mismatches and full entry lists for debugging Node.js caching/readdir inconsistencies
+
+## 2026-03-05 - 4.2.1 - fix(compiler)
+use TypeScript sys hooks instead of fs monkeypatching to detect writes/deletes in previous output directories
+
+- Replace direct fs.* monkeypatching with interception of typescript.sys.writeFile, typescript.sys.deleteFile and typescript.sys.createDirectory
+- Add guards for optional sys.deleteFile before overriding it and preserve original sys methods to restore after compilation
+- Update diagnostic messages to reference TypeScript sys ops and add an informational message when no ops are observed
+- Reduce surface area of changes by avoiding global fs changes and focusing on TypeScript's sys API for safer interception
+
 ## 2026-03-05 - 4.2.0 - feat(mod_compiler)
 add diagnostic interception of fs operations to detect and report unexpected file system changes in previously compiled output directories during compilation
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@git.zone/tsbuild",
-  "version": "4.2.0",
+  "version": "4.2.6",
   "private": false,
   "description": "A tool for compiling TypeScript files using the latest nightly features, offering flexible APIs and a CLI for streamlined development.",
   "main": "dist_ts/index.js",

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@git.zone/tsbuild',
-  version: '4.2.0',
+  version: '4.2.6',
   description: 'A tool for compiling TypeScript files using the latest nightly features, offering flexible APIs and a CLI for streamlined development.'
 }

ts/mod_compiler/classes.tscompiler.ts

@@ -1,6 +1,5 @@
 import type { CompilerOptions, Diagnostic, Program } from 'typescript';
 import typescript from 'typescript';
-import * as fs from 'fs';
 import * as smartdelay from '@push.rocks/smartdelay';
 import * as smartpromise from '@push.rocks/smartpromise';
 import * as smartpath from '@push.rocks/smartpath';
@@ -245,6 +244,12 @@ export class TsCompiler {
 
     // If no pre-emit errors, proceed with emit
     const emitResult = program.emit();
+
+    // Yield to the event loop so any pending microtasks, nextTick callbacks,
+    // or deferred I/O from TypeScript's emit (e.g. libuv write completions)
+    // can settle before we read or modify the output directory.
+    await new Promise<void>((resolve) => process.nextTick(resolve));
+
     const emitErrorSummary = this.processDiagnostics(emitResult.diagnostics);
 
     // Combine error summaries
@@ -325,49 +330,42 @@ export class TsCompiler {
       console.log('');
     }
 
+    // Phase 1: Resolve glob patterns and clean ALL output directories upfront.
+    // This ensures no rm/rmSync activity overlaps with TypeScript compilation,
+    // preventing XFS metadata corruption from concurrent metadata operations.
+    interface IResolvedTask {
+      pattern: string;
+      destPath: string;
+      destDir: string;
+      absoluteFiles: string[];
+    }
+    const resolvedTasks: IResolvedTask[] = [];
+
     for (const pattern of Object.keys(globPatterns)) {
       const destPath = globPatterns[pattern];
       if (!pattern || !destPath) continue;
 
-      // Get files matching the glob pattern
       const files = await FsHelpers.listFilesWithGlob(this.cwd, pattern);
-
-      // Transform to absolute paths
       const absoluteFiles = smartpath.transform.toAbsolute(files, this.cwd) as string[];
-
-      // Get destination directory as absolute path
       const destDir = smartpath.transform.toAbsolute(destPath, this.cwd) as string;
 
-      // Diagnostic helper
-      const diagSnap = (label: string) => {
-        if (!isQuiet && !isJson) {
-          for (const prevDir of successfulOutputDirs) {
-            try {
-              const entries = fs.readdirSync(prevDir);
-              const dirs = entries.filter(e => { try { return fs.statSync(prevDir + '/' + e).isDirectory(); } catch { return false; } });
-              const shortDir = prevDir.replace(this.cwd + '/', '');
-              console.log(`   📋 [${label}] ${shortDir}: ${entries.length} entries, ${dirs.length} dirs [${entries.sort().join(', ')}]`);
-            } catch {
-              console.log(`   📋 [${label}] ${prevDir.replace(this.cwd + '/', '')}: MISSING!`);
-            }
-          }
-        }
-      };
-
-      // Clear the destination directory before compilation if it exists
-      diagSnap('pre-clear');
       if (await FsHelpers.directoryExists(destDir)) {
         if (!isQuiet && !isJson) {
           console.log(`🧹 Clearing output directory: ${destPath}`);
         }
         await FsHelpers.removeDirectory(destDir);
       }
-      diagSnap('post-clear');
 
-      // Update compiler options with the output directory
+      resolvedTasks.push({ pattern, destPath, destDir, absoluteFiles });
+    }
+
+    // Phase 2: Compile all tasks. No filesystem cleanup happens during this phase.
+    const pendingUnpacks: Array<{ pattern: string; destDir: string }> = [];
+
+    for (const task of resolvedTasks) {
       const options: CompilerOptions = {
         ...customOptions,
-        outDir: destDir,
+        outDir: task.destDir,
         listEmittedFiles: true,
       };
 
@@ -375,125 +373,26 @@ export class TsCompiler {
       const taskInfo: ITaskInfo = {
         taskNumber: currentTask,
         totalTasks,
-        sourcePattern: pattern,
-        destDir: destPath,
-        fileCount: absoluteFiles.length,
+        sourcePattern: task.pattern,
+        destDir: task.destPath,
+        fileCount: task.absoluteFiles.length,
       };
 
-      // Diagnostic: intercept fs operations during compilation to detect
-      // any unexpected deletions in previously compiled output directories
-      const watchedDirs = successfulOutputDirs.filter(d => d !== destDir);
-      const origUnlink = fs.unlinkSync;
-      const origRm = fs.rmSync;
-      const origRmdir = fs.rmdirSync;
-      const origRename = fs.renameSync;
-      const origWriteFile = fs.writeFileSync;
-      let interceptedOps: string[] = [];
-      if (watchedDirs.length > 0 && !isQuiet && !isJson) {
-        (fs as any).unlinkSync = (p: string, ...args: any[]) => {
-          if (watchedDirs.some(d => String(p).startsWith(d + '/'))) {
-            interceptedOps.push(`unlink: ${p}`);
-          }
-          return origUnlink.call(fs, p, ...args);
-        };
-        (fs as any).rmSync = (p: string, ...args: any[]) => {
-          if (watchedDirs.some(d => String(p).startsWith(d + '/'))) {
-            interceptedOps.push(`rm: ${p}`);
-          }
-          return origRm.call(fs, p, ...args);
-        };
-        (fs as any).rmdirSync = (p: string, ...args: any[]) => {
-          if (watchedDirs.some(d => String(p).startsWith(d + '/'))) {
-            interceptedOps.push(`rmdir: ${p}`);
-          }
-          return origRmdir.call(fs, p, ...args);
-        };
-        (fs as any).renameSync = (src: string, dest: string, ...args: any[]) => {
-          if (watchedDirs.some(d => String(src).startsWith(d + '/') || String(dest).startsWith(d + '/'))) {
-            interceptedOps.push(`rename: ${src} → ${dest}`);
-          }
-          return origRename.call(fs, src, dest, ...args);
-        };
-        (fs as any).writeFileSync = (p: string, ...args: any[]) => {
-          if (watchedDirs.some(d => String(p).startsWith(d + '/'))) {
-            interceptedOps.push(`write: ${p}`);
-          }
-          return origWriteFile.call(fs, p, ...args);
-        };
-      }
-
-      const result = await this.compileFiles(absoluteFiles, options, taskInfo);
+      const result = await this.compileFiles(task.absoluteFiles, options, taskInfo);
       emittedFiles.push(...result.emittedFiles);
       errorSummaries.push(result.errorSummary);
 
-      // Restore original fs methods and report any intercepted operations
-      if (watchedDirs.length > 0 && !isQuiet && !isJson) {
-        (fs as any).unlinkSync = origUnlink;
-        (fs as any).rmSync = origRm;
-        (fs as any).rmdirSync = origRmdir;
-        (fs as any).renameSync = origRename;
-        (fs as any).writeFileSync = origWriteFile;
-        if (interceptedOps.length > 0) {
-          console.log(`   ⚠️ [diag] ${interceptedOps.length} ops on previous output dirs during compilation:`);
-          for (const op of interceptedOps.slice(0, 30)) {
-            console.log(`      ${op.replace(this.cwd + '/', '')}`);
-          }
-          if (interceptedOps.length > 30) {
-            console.log(`      ... and ${interceptedOps.length - 30} more`);
-          }
-        }
-      }
-      diagSnap('post-compile');
-
-      // Diagnostic: log emitted files that went to unexpected directories
-      if (!isQuiet && !isJson && result.emittedFiles.length > 0) {
-        const unexpectedFiles = result.emittedFiles.filter(f => !f.startsWith(destDir + '/') && !f.startsWith(destDir + '\\'));
-        if (unexpectedFiles.length > 0) {
-          console.log(`   ⚠️ [diag] ${unexpectedFiles.length} files emitted OUTSIDE ${destPath}:`);
-          for (const f of unexpectedFiles.slice(0, 20)) {
-            console.log(`      ${f.replace(this.cwd + '/', '')}`);
-          }
-          if (unexpectedFiles.length > 20) {
-            console.log(`      ... and ${unexpectedFiles.length - 20} more`);
-          }
-        }
-      }
-
-      // Perform unpack if compilation succeeded
       if (result.errorSummary.totalErrors === 0) {
-        await performUnpack(pattern, destDir, this.cwd);
-        successfulOutputDirs.push(destDir);
-      }
-
-      // Fsync all output directories to force XFS metadata commit
-      // before the next compilation step. Without this, XFS delayed logging
-      // can cause directory entries from previous compilations to become
-      // invisible or corrupted during subsequent TypeScript emit operations.
-      for (const dir of successfulOutputDirs) {
-        try {
-          const fd = fs.openSync(dir, 'r');
-          fs.fsyncSync(fd);
-          fs.closeSync(fd);
-        } catch {
-          // Directory might not exist yet
-        }
-      }
-
-      // Diagnostic: log all output directory states after each compilation
-      if (!isQuiet && !isJson) {
-        for (const prevDir of successfulOutputDirs) {
-          try {
-            const entries = fs.readdirSync(prevDir);
-            const dirs = entries.filter(e => {
-              try { return fs.statSync(prevDir + '/' + e).isDirectory(); } catch { return false; }
-            });
-            console.log(`   📋 [diag] ${prevDir.replace(this.cwd + '/', '')}: ${entries.length} entries, ${dirs.length} dirs`);
-          } catch {
-            console.log(`   📋 [diag] ${prevDir.replace(this.cwd + '/', '')}: MISSING!`);
-          }
-        }
+        pendingUnpacks.push({ pattern: task.pattern, destDir: task.destDir });
+        successfulOutputDirs.push(task.destDir);
       }
+    }
 
+    // Phase 3: Perform all unpacks after all compilations are done.
+    // This ensures no output directory is modified while subsequent compilations
+    // are performing heavy filesystem writes to sibling directories.
+    for (const { pattern, destDir } of pendingUnpacks) {
+      await performUnpack(pattern, destDir, this.cwd);
     }
 
     // Rewrite import paths in all output directories to handle cross-module references
@@ -508,21 +407,6 @@ export class TsCompiler {
       if (totalRewritten > 0 && !isQuiet && !isJson) {
         console.log(`   🔄 Rewrote import paths in ${totalRewritten} file${totalRewritten !== 1 ? 's' : ''}`);
       }
-
-      // Diagnostic: log output directory states after path rewriting
-      if (!isQuiet && !isJson) {
-        for (const dir of successfulOutputDirs) {
-          try {
-            const entries = fs.readdirSync(dir);
-            const dirs = entries.filter(e => {
-              try { return fs.statSync(dir + '/' + e).isDirectory(); } catch { return false; }
-            });
-            console.log(`   📋 [diag-post-rewrite] ${dir.replace(this.cwd + '/', '')}: ${entries.length} entries, ${dirs.length} dirs`);
-          } catch {
-            console.log(`   📋 [diag-post-rewrite] ${dir.replace(this.cwd + '/', '')}: MISSING!`);
-          }
-        }
-      }
     }
 
     // Merge all error summaries

ts/mod_fs/classes.fshelpers.ts

@@ -123,9 +123,6 @@ export class FsHelpers {
 
   /**
    * Remove a directory recursively.
-   * Uses synchronous rm to avoid XFS metadata corruption observed with
-   * async fs.promises.rm affecting sibling directory entries on the
-   * libuv thread pool under signal pressure.
    */
   public static async removeDirectory(dirPath: string): Promise<void> {
     fs.rmSync(dirPath, { recursive: true, force: true, maxRetries: 3, retryDelay: 100 });

ts/mod_unpack/classes.tsunpacker.ts

@@ -90,9 +90,9 @@ export class TsUnpacker {
    * 2. Moving contents of the nested source folder up to the dest dir
    * 3. Removing the now-empty nested source folder
    *
-   * Uses synchronous fs operations to avoid race conditions with
-   * async readdir returning partial/stale results under signal pressure
-   * or XFS metadata lag (observed in process-group environments like gitzone).
+   * Uses synchronous fs operations for reliability.
+   * Called after all compilations are complete (not between compilations)
+   * to avoid filesystem metadata issues on XFS.
    *
    * Returns true if unpacking was performed, false if skipped.
    */
@@ -107,17 +107,6 @@ export class TsUnpacker {
 
     const nestedPath = this.getNestedPath();
 
-    // Force XFS to flush pending directory metadata before reading.
-    // XFS delayed logging (CIL) can defer metadata commits, causing
-    // readdirSync/opendirSync to return incomplete results immediately
-    // after TypeScript's emit() creates files via writeFileSync.
-    const destFd = fs.openSync(this.destDir, 'r');
-    fs.fsyncSync(destFd);
-    fs.closeSync(destFd);
-    const nestedFd = fs.openSync(nestedPath, 'r');
-    fs.fsyncSync(nestedFd);
-    fs.closeSync(nestedFd);
-
     // Step 1: Remove sibling entries (everything in dest except the source folder)
     const destEntries = fs.readdirSync(this.destDir);
     for (const entry of destEntries) {
@@ -138,9 +127,7 @@ export class TsUnpacker {
     // Step 3: Remove the now-empty nested directory
     fs.rmdirSync(nestedPath);
 
-    // Diagnostic: verify final state
-    const finalEntries = fs.readdirSync(this.destDir);
-    console.log(`   📦 Unpacked ${this.sourceFolderName}: moved ${nestedEntries.length} entries, final: ${finalEntries.length} entries`);
+    console.log(`   📦 Unpacked ${this.sourceFolderName}: ${nestedEntries.length} entries`);
 
     return true;
   }