fix: implement ls to not exit when an error is encountered

Author: JanefrancessC

implement-shell-tools/cat/customCat.js

@@ -1,7 +1,5 @@
 #!/usr/bin/env node
 
-
-
 import { program } from "commander";
 import { promises as fs } from "node:fs";
 import process from "node:process";
@@ -31,12 +29,12 @@ for (const filePath of argv) {
       if (options.nonBlank) {
         if (line !== "") {
           count++;
-          process.stdout.write(
-            `${count.toString().padStart(6)} ${line}\n`,
-          );
+          process.stdout.write(`${count.toString().padStart(6)} ${line}\n`);
         } else process.stdout.write(`${line}\n`);
       } else if (options.number) {
-        process.stdout.write(`${(count++ + 1).toString().padStart(6)} ${line}\t`);
+        process.stdout.write(
+          `${(count++ + 1).toString().padStart(6)} ${line}\t`,
+        );
       } else {
         process.stdout.write(`${line}\n`);
       }

implement-shell-tools/ls/customLs.js

@@ -16,6 +16,8 @@ program.parse();
 const options = program.opts();
 const targetPaths = program.args.length > 0 ? program.args : ["."];
 
+let hadError = false;
+
 async function listDir(dirPath, showHeader) {
   try {
     let contents = await fs.readdir(dirPath);
@@ -39,7 +41,7 @@ async function listDir(dirPath, showHeader) {
     }
   } catch (error) {
     console.error(`cls: ${dirPath}: ${error.message}`);
-    process.exit(1);
+    hadError = true;
   }
 }
 
@@ -51,3 +53,5 @@ for (let i = 0; i < targetPaths.length; i++) {
 
   if (isMultiplePath && i < targetPaths.length - 1) process.stdout.write(`\n`);
 }
+
+if (hadError) process.exit(1);