diff --git a/build/tasks/concats.js b/build/tasks/concats.js
index d83bed0..a7e4811 100644
--- a/build/tasks/concats.js
+++ b/build/tasks/concats.js
@@ -6,15 +6,47 @@ import template from '../utils/template.js';
 import concat from 'concat';
 import { basename } from 'node:path';
 
+/**
+ * @const {object} defaultGlobOptions     - The default shared glob options.
+ * @const {object} developmentGlobOptions - The predefined glob options for development.
+ * @const {object} productionGlobOptions  - The predefined glob options for production.
+ */
+export const defaultGlobOptions = {
+};
+export const developmentGlobOptions = Object.assign({}, defaultGlobOptions);
+export const productionGlobOptions  = Object.assign({}, defaultGlobOptions);
+
+/**
+ * @const {object} developmentConcatFilesArgs - The predefined `concatFiles()` options for development.
+ * @const {object} productionConcatFilesArgs  - The predefined `concatFiles()` options for production.
+ */
+export const developmentConcatFilesArgs = [
+    developmentGlobOptions,
+];
+export const productionConcatFilesArgs  = [
+    productionGlobOptions,
+];
+
 /**
  * Concatenates groups of files.
  *
  * @todo Add support for minification.
  *
  * @async
+ * @param  {object} [globOptions=null]   - Customize the glob options.
+ *     If `null`, default production options are used.
  * @return {Promise}
  */
-export default async function concatFiles() {
+export default async function concatFiles(globOptions = null) {
+    if (globOptions == null) {
+        globOptions = productionGlobOptions;
+    } else if (
+        globOptions !== developmentGlobOptions &&
+        globOptions !== productionGlobOptions
+    ) {
+        globOptions = Object.assign({}, defaultGlobOptions, globOptions);
+    }
+
     loconfig.tasks.concats.forEach(async ({
         includes,
         outfile,
@@ -31,7 +63,7 @@ export default async function concatFiles() {
             includes = includes.map((path) => template(path));
             outfile  = template(outfile);
 
-            const files = await glob(includes);
+            const files = await glob(includes, globOptions);
 
             await concat(files, outfile);
 
diff --git a/build/watch.js b/build/watch.js
index 3a0a0b2..ef2f6c6 100644
--- a/build/watch.js
+++ b/build/watch.js
@@ -1,5 +1,5 @@
 import loconfig from '../loconfig.json';
-import concatFiles from './tasks/concats.js';
+import concatFiles, { developmentConcatFilesArgs } from './tasks/concats.js';
 import compileScripts, { developmentScriptsArgs } from './tasks/scripts.js';
 import compileStyles, { developmentStylesArgs } from './tasks/styles.js' ;
 import compileSVGs, { developmentSVGsArgs } from './tasks/svgs.js';
@@ -45,7 +45,7 @@ server.init(serverConfig);
 
 // Build scripts, compile styles, concat files,
 // and generate spritesheets on first hit
-concatFiles();
+concatFiles(...developmentConcatFilesArgs);
 compileScripts(...developmentScriptsArgs);
 compileStyles(...developmentStylesArgs);
 compileSVGs(...developmentSVGsArgs);
@@ -76,7 +76,7 @@ server.watch(
         []
     ).map((path) => template(path))
 ).on('change', () => {
-    concatFiles();
+    concatFiles(...developmentConcatFilesArgs);
 });
 
 // Watch source styles