diff --git a/src/index.js b/src/index.js
index 3791291..28e86ad 100644
--- a/src/index.js
+++ b/src/index.js
@@ -11,6 +11,7 @@
 core.mesh           = require('./mesh');
 core.particles      = require('./particles');
 core.accessibility  = require('./accessibility');
+core.extract  = require('./extract');
 
 // export a premade loader instance
 /**