diff --git a/javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java b/javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java
index ca7fa6c06c0..0d4dba7b6dc 100644
--- a/javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java
+++ b/javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java
@@ -1140,7 +1140,7 @@ protected DependencyInstallationResult preparePackagesAndDependencies(Set<Path>
 
             // extract TypeScript projects from 'tsconfig.json'
             if (typeScriptMode == TypeScriptMode.FULL
-                && file.getFileName().endsWith("tsconfig.json")
+                && (file.getFileName().toString().contains("tsconfig.") && file.getFileName().toString().endsWith(".json"))
                 && !excludes.contains(file)
                 && isFileIncluded(file)) {
               tsconfigFiles.add(file);