Completion Rules.tmPreferences

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>scope</key>
	<string>source.js</string>
	<key>settings</key>
	<dict>
		<key>cancelCompletion</key>
		<string>^\s*(\{?\s*(else|return|do)|(function)\s*[a-zA-Z_0-9]+)$</string>
	</dict>
</dict>
</plist>