diff --git a/src/build/copy-assets.js b/src/build/copy-assets.js
index b46a13f4..fd1ed38c 100644
--- a/src/build/copy-assets.js
+++ b/src/build/copy-assets.js
@@ -1,22 +1,7 @@
-const { promises: fs } = require( 'fs' );
-const path = require( 'path' );
-
-async function copyDir( src, dest ) {
-	await fs.mkdir( dest, { recursive: true } );
-	const entries = await fs.readdir( src, { withFileTypes: true } );
-
-	for ( let entry of entries ) {
-		let srcPath = path.join( src, entry.name );
-		let destPath = path.join( dest, entry.name );
-
-		entry.isDirectory()
-			? await copyDir( srcPath, destPath )
-			: await fs.copyFile( srcPath, destPath );
-	}
-}
+const utils = require( './utils' );
 
 // Copy all Bootstrap SCSS files.
-copyDir( './node_modules/bootstrap4/scss', './src/sass/assets/bootstrap4' );
-copyDir( './node_modules/bootstrap/scss', './src/sass/assets/bootstrap5' );
+utils.copyDir( './node_modules/bootstrap4/scss', './src/sass/assets/bootstrap4' );
+utils.copyDir( './node_modules/bootstrap/scss', './src/sass/assets/bootstrap5' );
 // Copy all Font Awesome SCSS files.
-copyDir( './node_modules/font-awesome/scss', './src/sass/assets/fontawesome' );
+utils.copyDir( './node_modules/font-awesome/scss', './src/sass/assets/fontawesome' );
diff --git a/src/build/dist-build.js b/src/build/dist-build.js
index 352b6a69..02f44265 100644
--- a/src/build/dist-build.js
+++ b/src/build/dist-build.js
@@ -1,39 +1,19 @@
-const { promises: fs } = require( 'fs' );
-const path = require( 'path' );
+const utils = require( './utils' );
 const pkg = require( '../../package.json' );
+const ignore = [
+	'dist',
+	'node_modules',
+	'src',
+	'vendor',
+	'composer.json',
+	'composer.lock',
+	'package.json',
+	'package-lock.json',
+	'phpcs.xml.dist',
+	'phpmd.baseline.xml',
+	'phpmd.xml',
+	'phpstan-baseline.neon',
+	'phpstan.neon.dist',
+];
 
-async function copyDir( src, dest ) {
-	await fs.mkdir( dest, { recursive: true } );
-	let entries = await fs.readdir( src, { withFileTypes: true } );
-	// Exclude all dot files and directories.
-	entries = entries.filter( dirent => ! dirent.name.startsWith('.') );
-	const ignore = [
-		'dist',
-		'node_modules',
-		'src',
-		'vendor',
-		'composer.json',
-		'composer.lock',
-		'package.json',
-		'package-lock.json',
-		'phpcs.xml.dist',
-		'phpmd.baseline.xml',
-		'phpmd.xml',
-		'phpstan-baseline.neon',
-		'phpstan.neon.dist',
-	];
-
-	for ( const entry of entries ) {
-		if ( ignore.indexOf( entry.name ) != -1 ) {
-			continue;
-		}
-		let srcPath = path.join( src, entry.name );
-		let destPath = path.join( dest, entry.name );
-
-		entry.isDirectory()
-			? await copyDir( srcPath, destPath )
-			: await fs.copyFile( srcPath, destPath );
-	}
-}
-
-copyDir( './', `./dist/${ pkg.name }-${ pkg.version }` );
+utils.copyDir( './', `./dist/${ pkg.name }-${ pkg.version }`, ignore );
diff --git a/src/build/utils.js b/src/build/utils.js
new file mode 100644
index 00000000..c5f42832
--- /dev/null
+++ b/src/build/utils.js
@@ -0,0 +1,22 @@
+const { promises: fs } = require( 'fs' );
+const path = require( 'path' );
+
+module.exports.copyDir = async function copyDir( src, dest, ignore ) {
+	await fs.mkdir( dest, { recursive: true } );
+	let entries = await fs.readdir( src, { withFileTypes: true } );
+	// Exclude all dot files and directories.
+	entries = entries.filter( dirent => ! dirent.name.startsWith('.') );
+	ignore = ignore || [];
+
+	for ( const entry of entries ) {
+		if ( ignore.indexOf( entry.name ) != -1 ) {
+			continue;
+		}
+		const srcPath = path.join( src, entry.name );
+		const destPath = path.join( dest, entry.name );
+
+		entry.isDirectory()
+			? await copyDir( srcPath, destPath )
+			: await fs.copyFile( srcPath, destPath );
+	}
+}