Throw error if no files were found

Author: koddsson

packages/dynamic-import-vars/src/index.js

@@ -9,7 +9,7 @@ import { createFilter } from '@rollup/pluginutils';
 
 import { dynamicImportToGlob, VariableDynamicImportError } from './dynamic-import-to-glob';
 
-function dynamicImportVariables({ include, exclude, warnOnError } = {}) {
+function dynamicImportVariables({ include, exclude, warnOnError, errorWhenNoFilesFound } = {}) {
   const filter = createFilter(include, exclude);
 
   return {
@@ -55,6 +55,12 @@ function dynamicImportVariables({ include, exclude, warnOnError } = {}) {
               r.startsWith('./') || r.startsWith('../') ? r : `./${r}`
             );
 
+            if (errorWhenNoFilesFound && paths.length === 0) {
+              this.error(
+                new Error('No files found when trying to dynamically load concatted string')
+              );
+            }
+
             // create magic string if it wasn't created already
             ms = ms || new MagicString(code);
             // unpack variable dynamic import into a function with import statements per file, rollup