Bugfix: List of nameless module types was wrong

Author: moonglum

lib/bundle/config.js

@@ -14,7 +14,7 @@ let MODULE_FORMATS = { // maps faucet identifiers to Rollup identifiers
 	cjs: false, // deprecated in favor of `commonjs`
 	iife: true
 };
-let NAMELESS_MODULES = new Set(["es", "amd", "cjs"]); // NB: Rollup identifiers
+let NAMELESS_MODULES = new Set(["esm", "amd", "cjs"]); // NB: Rollup identifiers
 
 module.exports = generateConfig;