From e30af7be3387a9709d8871f3785ddd10db54ea10 Mon Sep 17 00:00:00 2001
From: ZiJian Liu <Lxxyxzj@gmail.com>
Date: Tue, 15 Dec 2020 19:24:10 +0800
Subject: [PATCH] fs: refactor to use optional chaining

PR-URL: https://github.com/nodejs/node/pull/36524
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
---
 lib/fs.js                            | 16 ++++++++--------
 lib/internal/fs/promises.js          |  8 ++++----
 lib/internal/fs/read_file_context.js |  2 +-
 lib/internal/fs/rimraf.js            |  2 +-
 lib/internal/fs/watchers.js          |  2 +-
 5 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/lib/fs.js b/lib/fs.js
index 39f35371393f4a..93e875311e08a6 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -877,7 +877,7 @@ function rmdir(path, options, callback) {
   callback = makeCallback(callback);
   path = pathModule.toNamespacedPath(getValidatedPath(path));
 
-  if (options && options.recursive) {
+  if (options?.recursive) {
     validateRmOptions(
       path,
       { ...options, force: true },
@@ -901,7 +901,7 @@ function rmdir(path, options, callback) {
 function rmdirSync(path, options) {
   path = getValidatedPath(path);
 
-  if (options && options.recursive) {
+  if (options?.recursive) {
     options = validateRmOptionsSync(path, { ...options, force: true }, true);
     lazyLoadRimraf();
     return rimrafSync(pathModule.toNamespacedPath(path), options);
@@ -1087,7 +1087,7 @@ function stat(path, options = { bigint: false }, callback) {
 function hasNoEntryError(ctx) {
   if (ctx.errno) {
     const uvErr = uvErrmapGet(ctx.errno);
-    return uvErr && uvErr[0] === 'ENOENT';
+    return uvErr?.[0] === 'ENOENT';
   }
 
   if (ctx.error) {
@@ -1711,7 +1711,7 @@ function realpathSync(p, options) {
   p = pathModule.resolve(p);
 
   const cache = options[realpathCacheKey];
-  const maybeCachedResult = cache && cache.get(p);
+  const maybeCachedResult = cache?.get(p);
   if (maybeCachedResult) {
     return maybeCachedResult;
   }
@@ -1760,7 +1760,7 @@ function realpathSync(p, options) {
     }
 
     // Continue if not a symlink, break if a pipe/socket
-    if (knownHard[base] || (cache && cache.get(base) === base)) {
+    if (knownHard[base] || cache?.get(base) === base) {
       if (isFileType(statValues, S_IFIFO) ||
           isFileType(statValues, S_IFSOCK)) {
         break;
@@ -1769,7 +1769,7 @@ function realpathSync(p, options) {
     }
 
     let resolvedLink;
-    const maybeCachedResolved = cache && cache.get(base);
+    const maybeCachedResolved = cache?.get(base);
     if (maybeCachedResolved) {
       resolvedLink = maybeCachedResolved;
     } else {
@@ -1783,7 +1783,7 @@ function realpathSync(p, options) {
 
       if (!isFileType(stats, S_IFLNK)) {
         knownHard[base] = true;
-        if (cache) cache.set(base, base);
+        cache?.set(base, base);
         continue;
       }
 
@@ -1828,7 +1828,7 @@ function realpathSync(p, options) {
     }
   }
 
-  if (cache) cache.set(original, p);
+  cache?.set(original, p);
   return encodeRealpathResult(p, options);
 }
 
diff --git a/lib/internal/fs/promises.js b/lib/internal/fs/promises.js
index 2f4856e04427c4..885df198a0629b 100644
--- a/lib/internal/fs/promises.js
+++ b/lib/internal/fs/promises.js
@@ -291,14 +291,14 @@ async function writeFileHandle(filehandle, data, signal) {
 }
 
 async function readFileHandle(filehandle, options) {
-  const signal = options && options.signal;
+  const signal = options?.signal;
 
-  if (signal && signal.aborted) {
+  if (signal?.aborted) {
     throw lazyDOMException('The operation was aborted', 'AbortError');
   }
   const statFields = await binding.fstat(filehandle.fd, false, kUsePromises);
 
-  if (signal && signal.aborted) {
+  if (signal?.aborted) {
     throw lazyDOMException('The operation was aborted', 'AbortError');
   }
 
@@ -318,7 +318,7 @@ async function readFileHandle(filehandle, options) {
     MathMin(size, kReadFileMaxChunkSize);
   let endOfFile = false;
   do {
-    if (signal && signal.aborted) {
+    if (signal?.aborted) {
       throw lazyDOMException('The operation was aborted', 'AbortError');
     }
     const buf = Buffer.alloc(chunkSize);
diff --git a/lib/internal/fs/read_file_context.js b/lib/internal/fs/read_file_context.js
index 10ba44e9c67bfc..61f25f75cb9af9 100644
--- a/lib/internal/fs/read_file_context.js
+++ b/lib/internal/fs/read_file_context.js
@@ -94,7 +94,7 @@ class ReadFileContext {
     let offset;
     let length;
 
-    if (this.signal && this.signal.aborted) {
+    if (this.signal?.aborted) {
       return this.close(
         lazyDOMException('The operation was aborted', 'AbortError')
       );
diff --git a/lib/internal/fs/rimraf.js b/lib/internal/fs/rimraf.js
index b0260be9ad1b51..758cdcb1aa3548 100644
--- a/lib/internal/fs/rimraf.js
+++ b/lib/internal/fs/rimraf.js
@@ -189,7 +189,7 @@ function rimrafSync(path, options) {
 
   try {
     // SunOS lets the root user unlink directories.
-    if (stats !== undefined && stats.isDirectory())
+    if (stats?.isDirectory())
       _rmdirSync(path, options, null);
     else
       _unlinkSync(path, options);
diff --git a/lib/internal/fs/watchers.js b/lib/internal/fs/watchers.js
index 43c6a8f9a938fa..6791fb12d838d9 100644
--- a/lib/internal/fs/watchers.js
+++ b/lib/internal/fs/watchers.js
@@ -137,7 +137,7 @@ StatWatcher.prototype[kFSStatWatcherAddOrCleanRef] = function(operate) {
     // Clean up all
     this[KFSStatWatcherMaxRefCount] = 0;
     this[KFSStatWatcherRefCount] = 0;
-    this._handle && this._handle.unref();
+    this._handle?.unref();
   }
 };