diff --git a/src/index.js b/src/index.js
index ae7c141..7ec5447 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,65 +1,77 @@
-import * as core from "@actions/core";
-import { promises as fs } from "fs";
-import { exec } from "child_process";
-import { execFile } from "child_process";
+const core = require("@actions/core");
+const { promises: fs } = require("fs");
+const { exec, execFile } = require("child_process");
+
+function execPromise(command) {
+  return new Promise((resolve, reject) => {
+    exec(command, (error, stdout, stderr) => {
+      console.log(stdout);
+      console.error(stderr);
+      if (error) {
+        reject(new Error(`Command failed: ${stderr}`));
+      } else {
+        resolve(stdout);
+      }
+    });
+  });
+}
+
+function execFilePromise(file, args) {
+  return new Promise((resolve, reject) => {
+    execFile(file, args, (error, stdout, stderr) => {
+      console.log(stdout);
+      console.error(stderr);
+      if (error) {
+        reject(new Error(`Execution failed: ${stderr}`));
+      } else {
+        resolve(stdout);
+      }
+    });
+  });
+}
 
 const workspacePath = process.env.GITHUB_WORKSPACE;
 const options = core.getMultilineInput("options");
 const path = core.getInput("path");
 
-let repoError;
-let platformError;
-
 async function run() {
   try {
-    if (process.platform === "win32") {
-      let workspaceExists;
-      try {
-        await fs.access(workspacePath);
-        workspaceExists = true;
-      } catch {
-        workspaceExists = false;
-      }
-
-      const workspaceNotEmpty = (await fs.readdir(workspacePath)).length > 0;
-
-      if (workspaceExists && workspaceNotEmpty) {
-        const escapedOptions = options.map((str) =>
-          str.replace(/(["'])/g, "$1"),
-        );
-
-        exec(
-          `winget install --id JRSoftware.InnoSetup -e -s winget -h`,
-          (execError, stdout, stderr) => {
-            console.log(stdout, stderr);
-            if (execError) {
-              core.setFailed(`Failed to install Inno Setup: ${stderr}`);
-              process.exit(execError.code || 1);
-            }
-          },
-        );
-
-        execFile(
-          `${process.env["ProgramFiles(x86)"]}\\Inno Setup 6\\iscc.exe`,
-          [...escapedOptions, `${workspacePath}\\${path}`],
-          (execError, stdout, stderr) => {
-            console.log(stdout, stderr);
-            if (execError) {
-              core.setFailed(`Execution failed with error: ${stderr}`);
-              process.exit(execError.code || 1);
-            }
-          },
-        );
-      } else {
-        throw new Error(
-          "The repository was not cloned. Please specify the actions/checkout action before this step.",
-        );
-      }
-    } else {
+    if (process.platform !== "win32") {
       throw new Error("This action is only supported on Windows!");
     }
+
+    if (!workspacePath) {
+      throw new Error("GITHUB_WORKSPACE is not defined.");
+    }
+
+    try {
+      await fs.access(workspacePath);
+    } catch {
+      throw new Error("Workspace path does not exist.");
+    }
+
+    const files = await fs.readdir(workspacePath);
+    if (files.length === 0) {
+      throw new Error(
+        "The repository was not cloned. Please specify the actions/checkout action before this step."
+      );
+    }
+
+    const escapedOptions = options.map((str) => str.replace(/(["'])/g, "$1"));
+
+    // Install Inno Setup silently
+    await execPromise(
+      `winget install --id JRSoftware.InnoSetup -e -s winget -h`
+    );
+
+    const isccPath = `${process.env["ProgramFiles(x86)"]}\\Inno Setup 6\\iscc.exe`;
+    const scriptPath = `${workspacePath}\\${path}`;
+
+    await execFilePromise(isccPath, [...escapedOptions, scriptPath]);
+
+    console.log("Inno Setup script compiled successfully.");
   } catch (error) {
-    core.setFailed(error.message);
+    core.setFailed(error.message || "An unknown error occurred.");
     process.exit(1);
   }
 }