feat(ext/fs): add isBlockDevice, isCharDevice, isFifo, isSocket to FileInfo (#19008)

`isFile`, `isDirectory`, `isSymlink` are defined in `Deno.FileInfo`, but
`isBlockDevice`, `isCharacterDevice`, `isFIFO`, `isSocket` are not
defined.

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/ext/fs/30_fs.js b/ext/fs/30_fs.js
index dbe064ab8..f14fcd5d1 100644
--- a/ext/fs/30_fs.js
+++ b/ext/fs/30_fs.js
@@ -245,6 +245,7 @@ async function rename(oldpath, newpath) {
 //  high u32 | low u32
 //
 // 4. ?u64 converts a zero u64 value to JS null on Windows.
+//    ?bool converts a false bool value to JS null on Windows.
 function createByteStruct(types) {
   // types can be "date", "bool" or "u64".
   let offset = 0;
@@ -273,7 +274,15 @@ function createByteStruct(types) {
       }] + view[${offset + 3}] * 2**32),`;
       offset += 2;
     } else {
-      str += `${name}: !!(view[${offset}] + view[${offset + 1}] * 2**32),`;
+      if (!optional) {
+        str += `${name}: !!(view[${offset}] + view[${offset + 1}] * 2**32),`;
+      } else {
+        str += `${name}: (unix ? !!((view[${offset}] + view[${
+          offset + 1
+        }] * 2**32)) : !!((view[${offset}] + view[${
+          offset + 1
+        }] * 2**32)) || null),`;
+      }
     }
     offset += 2;
   }
@@ -299,6 +308,10 @@ const { 0: statStruct, 1: statBuf } = createByteStruct({
   rdev: "?u64",
   blksize: "?u64",
   blocks: "?u64",
+  isBlockDevice: "?bool",
+  isCharDevice: "?bool",
+  isFifo: "?bool",
+  isSocket: "?bool",
 });
 
 function parseFileInfo(response) {
@@ -322,6 +335,10 @@ function parseFileInfo(response) {
     rdev: unix ? response.rdev : null,
     blksize: unix ? response.blksize : null,
     blocks: unix ? response.blocks : null,
+    isBlockDevice: unix ? response.isBlockDevice : null,
+    isCharDevice: unix ? response.isCharDevice : null,
+    isFifo: unix ? response.isFifo : null,
+    isSocket: unix ? response.isSocket : null,
   };
 }