diff --git a/src/tar.ts b/src/tar.ts
index 26039b8..6014920 100644
--- a/src/tar.ts
+++ b/src/tar.ts
@@ -1,7 +1,18 @@
 import { exec } from "@actions/exec";
 import * as io from "@actions/io";
 
-export async function extractTar(archivePath: string, targetDirectory: string) {
+async function getTarPath(): Promise<string> {
+    // Explicitly use BSD Tar on Windows
+    const IS_WINDOWS = process.platform === "win32";
+    return IS_WINDOWS
+        ? `${process.env["windir"]}\\System32\\tar.exe`
+        : await io.which("tar", true);
+}
+
+export async function extractTar(
+    archivePath: string,
+    targetDirectory: string
+): Promise<void> {
     // Create directory to extract tar into
     await io.mkdirP(targetDirectory);
 
@@ -11,17 +22,12 @@ export async function extractTar(archivePath: string, targetDirectory: string) {
     await exec(`"${await getTarPath()}"`, args);
 }
 
-export async function createTar(archivePath: string, sourceDirectory: string) {
+export async function createTar(
+    archivePath: string,
+    sourceDirectory: string
+): Promise<void> {
     // http://man7.org/linux/man-pages/man1/tar.1.html
     // tar [-options] <name of the tar archive> [files or directories which to add into archive]
     const args = ["-cz", "-f", archivePath, "-C", sourceDirectory, "."];
     await exec(`"${await getTarPath()}"`, args);
 }
-
-async function getTarPath(): Promise<string> {
-    // Explicitly use BSD Tar on Windows
-    const IS_WINDOWS = process.platform === "win32";
-    return IS_WINDOWS
-        ? `${process.env["windir"]}\\System32\\tar.exe`
-        : await io.which("tar", true);
-}