Cleanup std/node/fs functions (#5000)

3 files changed, 7 insertions, 16 deletions

diff --git a/std/node/_fs/_fs_chmod.ts b/std/node/_fs/_fs_chmod.ts
index 306113047..2adff59ff 100644
--- a/std/node/_fs/_fs_chmod.ts
+++ b/std/node/_fs/_fs_chmod.ts
@@ -31,10 +31,8 @@ function getResolvedMode(mode: string | number): number {
     return mode;
   }
 
-  if (typeof mode === "string") {
-    if (!allowedModes.test(mode)) {
-      throw new Error("Unrecognized mode: " + mode);
-    }
+  if (typeof mode === "string" && !allowedModes.test(mode)) {
+    throw new Error("Unrecognized mode: " + mode);
   }
 
   return parseInt(mode, 8);
diff --git a/std/node/_fs/_fs_copy.ts b/std/node/_fs/_fs_copy.ts
index 320c2fb3e..0193e77c4 100644
--- a/std/node/_fs/_fs_copy.ts
+++ b/std/node/_fs/_fs_copy.ts
@@ -13,9 +13,5 @@ export function copyFile(
 }
 
 export function copyFileSync(source: string, destination: string): void {
-  try {
-    Deno.copyFileSync(source, destination);
-  } catch (err) {
-    throw err;
-  }
+  Deno.copyFileSync(source, destination);
 }
diff --git a/std/node/_fs/_fs_mkdir.ts b/std/node/_fs/_fs_mkdir.ts
index 6e5439a38..fd2156c37 100644
--- a/std/node/_fs/_fs_mkdir.ts
+++ b/std/node/_fs/_fs_mkdir.ts
@@ -35,12 +35,12 @@ export function mkdir(
     );
   Deno.mkdir(path, { recursive, mode })
     .then(() => {
-      if (callback && typeof callback == "function") {
+      if (typeof callback === "function") {
         callback();
       }
     })
     .catch((err) => {
-      if (callback && typeof callback == "function") {
+      if (typeof callback === "function") {
         callback(err);
       }
     });
@@ -62,9 +62,6 @@ export function mkdirSync(path: Path, options?: MkdirOptions): void {
     throw new Deno.errors.InvalidData(
       "invalid recursive option , must be a boolean"
     );
-  try {
-    Deno.mkdirSync(path, { recursive, mode });
-  } catch (err) {
-    throw err;
-  }
+
+  Deno.mkdirSync(path, { recursive, mode });
 }