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-rw-r--r--src/shell.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/shell.js b/src/shell.js
index d6dc0fb5..5571b8ac 100644
--- a/src/shell.js
+++ b/src/shell.js
@@ -8,7 +8,7 @@ try {
// The environment setup code below is customized to use Module.
// *** Environment setup code ***
-var ENVIRONMENT_IS_NODE = typeof process === 'object';
+var ENVIRONMENT_IS_NODE = typeof process === 'object' && typeof require === 'function';
var ENVIRONMENT_IS_WEB = typeof window === 'object';
var ENVIRONMENT_IS_WORKER = typeof importScripts === 'function';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;