Added appropriate error codes where program exits

src/index.js

@@ -6,14 +6,17 @@ if (process.argv.length === 2) {
   console.error(
     "Please provide a path to a directory as an argument. Enter TILerator --help for more information.\n"
   );
+  process.exit(-1);
 } else {
   // Remove first two arguments from process.argv
   const input = process.argv.slice(2);
 
   if (input.includes("-v") || input.includes("--version")) {
     utils.displayVersion();
+    process.exit(0);
   } else if (input.includes("-h") || input.includes("--help")) {
     utils.helpManual();
+    process.exit(0);
   } else if (
     (input.includes("-o") || input.includes("--output")) &&
     input.length === 3
@@ -29,11 +32,14 @@ if (process.argv.length === 2) {
       filePath = input[0];
     }
     utils.determinePath([filePath], outputFolder);
+    process.exit(0);
   } else if (input.length === 1 && !input[0].startsWith("-")) {
     utils.determinePath([input[0]]);
+    process.exit(0);
   } else {
     console.error(
       "Invalid arguments provided. Enter TILerator --help for more information.\n"
     );
+    process.exit(-1);
   }
 }

src/utils.js

@@ -36,6 +36,7 @@ const manageOutputFolder = (outputFolder) => {
       console.log("Directory successfully created");
     } catch {
       console.error(err);
+      process.exit(-1);
     }
   } else {
     console.log("Directory does not exist... Creating output directory");
@@ -44,6 +45,7 @@ const manageOutputFolder = (outputFolder) => {
       console.log("Directory successfully created");
     } catch (err) {
       console.error(err);
+      process.exit(-1);
     }
   }
 };
@@ -78,6 +80,7 @@ const generateHTML = (fileData, filePath, outputFolder) => {
       console.log(`File successfully written at: ${outputFolder}/${path.basename(filePath[i], path.extname(filePath[i]))}.html`);
     } catch (err) {
       console.error(err);
+      process.exit(-1);
     }
   }
 };
@@ -145,7 +148,7 @@ const readFileFromPath = (filePath, outputFolder) => {
       data = fs.readFileSync(filePath[a], "utf8");
       } catch (err) {
       console.error(`Error while processing text file\nError: ${err}`);
-      return;
+      process.exit(-1);
     }
     const fileType = filePath[a].split(".").pop();
     markupData.push(addHTMLMarkup(data.split("\r\n"), fileType));
@@ -159,7 +162,7 @@ const readFileFromPath = (filePath, outputFolder) => {
 
   } catch (err) {
     console.error(`Error while processing text file\nError: ${err}`);
-    return;
+    process.exit(-1);
   }
 };
 
@@ -183,7 +186,7 @@ const determinePath = (inputPath, outputFolder = "./til") => {
       fs.readdir(inputPath[0], (err, files) => {
         if (err) {
           console.error(`Unable to read directory.\nError: ${err}`);
-          return;
+          process.exit(-1);
         } else {
           // Get all file paths from directory that end with .txt or .md
           for (let i = 0; i < files.length; i++) {
@@ -197,6 +200,7 @@ const determinePath = (inputPath, outputFolder = "./til") => {
       });
     } else {
       console.error(`Path does not point to a text file. \n`);
+      process.exit(-1);
     }
   } catch (err) {
     console.error(`Unable to access path.`);
@@ -205,6 +209,7 @@ const determinePath = (inputPath, outputFolder = "./til") => {
     } else {
       console.error(err);
     }
+    process.exit(-1);
   }
 };