diff --git a/.gitignore b/.gitignore
index 45530ba..ca5b2b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,5 +45,8 @@ binaries
 # VS Code
 .vs/
 .vscode/
-win32/
 .nyc_output/
+
+# 7-Zip
+win32/
+other32/
\ No newline at end of file
diff --git a/src/index.ts b/src/index.ts
index b047959..050e1bc 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -28,26 +28,19 @@ function retry(
     archive: string
 ) {
     // Start the command
-    return Run('7z', command, options, override)
-        .progress(function (data: any) {
-            return progress(onprogress(data));
-        }) // When all is done resolve the Promise.
-        .then(function (args: string[]) {
-            return resolve(args);
-        }) // Catch the error and pass it to the reject function of the Promise.
-        .catch(function () {
-            console.error(archive + ' failed using `7z`, retying with `7za`.');
-            Run('7za', command, options, override)
-                .progress(function (data: any) {
-                    return progress(onprogress(data));
-                })
-                .then(function (args: string[]) {
-                    return resolve(args);
-                })
-                .catch(function (err: any) {
-                    return reject(err);
-                });
+    const executables = ['7z', '7za']; // Two or more items
+    let position = 0;
+    const runner = () => Run(executables[position], command, options, override)
+        .progress((data: any) => progress(onprogress(data)))        
+        .then((args: string[]) => resolve(args)) // When all is done resolve the Promise.        
+        .catch((err: any) => { // Catch the error and pass it to the reject function of the Promise.
+            if (position === executables.length - 1) return reject(err);
+            console.error(archive + ' failed using `' + executables[position] + 
+                '`, retrying with `' + executables[position + 1] + '`.');
+            position++;
+            runner();
         });
+    return runner();
 }
 
 /**
@@ -124,24 +117,20 @@ export const deleteArchive =
                 // Convert array of files into a string if needed.
                 files = Files(files);
                 // Create a string that can be parsed by `run`.
-                let command = 'd "' + filepath + '" ' + files;
+                let command = `d "${filepath}" ${files}`;
                 // Start the command
-                Run('7z', command, options, override) // When all is done resolve the Promise.
-                    .then(function (args) {
-                        return resolve(args);
-                    }) // Catch the error and pass it to the reject function of the Promise.
-                    .catch(function () {
-                        console.error(
-                            'DeleteArchive failed using `7z`, retying with `7za`.'
-                        );
-                        Run('7za', command, options, override)
-                            .then(function (args) {
-                                return resolve(args);
-                            })
-                            .catch(function (err) {
-                                return reject(err);
-                            });
+                const executables = ['7z', '7za']; // Two or more items
+                let position = 0;
+                const runner = () => Run(executables[position], command, options, override)
+                    .then((args: any[]) => resolve(args)) // When all is done resolve the Promise.        
+                    .catch((err: any) => { // Catch the error and pass it to the reject function of the Promise.
+                        if (position === executables.length - 1) return reject(err);
+                        console.error('DeleteArchive failed using `' + executables[position] + 
+                            '`, retrying with `' + executables[position + 1] + '`.');
+                        position++;
+                        runner();
                     });
+                return runner();
             });
         });
 
@@ -339,32 +328,20 @@ export const listArchive =
 
                 // Create a string that can be parsed by `run`.
                 let command = 'l "' + filepath + '" ';
-                Run(isWindows() ? '7z' : '7za', command, options, override)
-                    .progress(function (data: string) {
-                        return progress(onprogress(data));
-                    })
-                    .then(function () {
-                        return resolve(spec);
-                    })
-                    .catch(function (err: any) {
-                        if (isWindows()) {
-                            console.error(
-                                'ListArchive failed using `7z`, retying with `7za`.'
-                            );
-                            Run('7za', command, options, override)
-                                .progress(function (data: string) {
-                                    return progress(onprogress(data));
-                                })
-                                .then(function (args: any) {
-                                    return resolve(args);
-                                })
-                                .catch(function (err: any) {
-                                    return reject(err);
-                                });
-                        } else {
-                            return reject(err);
-                        }
+                // Start the command
+                const executables = isWindows() ? ['7z', '7za'] : ['7za'];
+                let position = 0; 
+                const runner = () => Run(executables[position], command, options, override)
+                    .progress((data: string) => progress(onprogress(data)))        
+                    .then((args: any) => resolve(position === 0 ? spec : args))      
+                    .catch((err: any) => {
+                        if (position === executables.length - 1) return reject(err);
+                        console.error('ListArchive failed using `' + executables[position] + 
+                            '`, retrying with `' + executables[position + 1] + '`.');
+                        position++;
+                        runner();
                     });
+                return runner();
             });
         });
 
diff --git a/src/utility.ts b/src/utility.ts
index 906bbe4..f991804 100644
--- a/src/utility.ts
+++ b/src/utility.ts
@@ -11,20 +11,15 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 
 export const Binary = function (override = false, binary = '7z') {
-    let path = join(
+    const path = join(
         __dirname,
         '..',
         'binaries',
-        override === true
-            ? process.platform + sep + 'other32'
-            : process.platform
+        `${process.platform}${override === true ? sep + 'other32' : ''}`
     );
-    let filename = isWindows() ? binary + '.exe' : binary;
-    return {
-        path: path,
-        filename: filename,
-        filepath: join(path, filename),
-    };
+    const filename = `${binary}${isWindows() ? '.exe' : ''}`;
+    const filepath = join(path, filename);
+    return { path, filename, filepath };
 };
 
 /**
@@ -34,22 +29,10 @@ export const Binary = function (override = false, binary = '7z') {
  * @return {string}
  */
 export const Files = function (files: string | string[]): string {
-    if (isUndefined(files)) {
-        return '';
-    }
-
-    let toProcess = '';
-
-    if (Array.isArray(files)) {
-        files.forEach(function (f) {
-            toProcess += '"' + f + '" ';
-        });
-        toProcess = toProcess.trim();
-    } else {
-        toProcess = '"' + files + '"';
-    }
-
-    return toProcess;
+    if (isUndefined(files)) return '';
+    return (Array.isArray(files) ? files : [files])
+        .map((file) => `"${file}"`)
+        .join(' ');
 };
 
 /**
@@ -57,14 +40,7 @@ export const Files = function (files: string | string[]): string {
  * @return {string} A path with / for directory separator.
  */
 export const ReplaceNativeSeparator = function (path: string): string {
-    let result = path,
-        next;
-
-    while ((next = result.replace(nativeSeparator, '/')) !== result) {
-        result = next;
-    }
-
-    return result;
+    return path.replace(new RegExp(`\\${nativeSeparator}`, 'g'), '/');
 };
 
 /**
@@ -103,15 +79,10 @@ export function Run(
         let args = [command.split(' ')[0]];
         // Parse and add command (non-switches parameters) to `args`.
         let regexpCommands = /"((?:\\.|[^"\\])*)"/g;
-        let commands = command.match(regexpCommands);
-
-        if (commands) {
-            commands.forEach(function (c) {
-                c = c.replace(/\//g, sep);
-                c = c.replace(/\\/g, sep);
-                c = normalize(c);
-                args.push(c);
-            });
+        let commands = command.match(regexpCommands) || [];
+        for (command of commands) {
+            const arg = command.replace(/(\/|\\)/g, sep);
+            args.push(normalize(arg));
         }
 
         // Special treatment for the output switch because it is exposed as a
@@ -121,12 +92,8 @@ export function Run(
 
         if (output) {
             args.pop();
-            let o = output[0];
-            o = o.replace(/\//g, sep);
-            o = o.replace(/\\/g, sep);
-            o = o.replace(/"/g, '');
-            o = normalize(o);
-            args.push(o);
+            const arg = output[0].replace(/(\/|\\|")/g, (match) => match === '"' ? '' : sep);
+            args.push(normalize(arg));
         }
 
         if (switches.files) {