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-rw-r--r--tools/file_packager.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/file_packager.py b/tools/file_packager.py
index a288e9c5..9e98320a 100644
--- a/tools/file_packager.py
+++ b/tools/file_packager.py
@@ -62,7 +62,11 @@ for arg in sys.argv[1:]:
Compression.js_name = arg
in_compress = 0
-code = ''
+code = '''
+function assert(check, msg) {
+ if (!check) throw msg;
+}
+'''
if has_preloaded:
code += '''