Debug JS in cocos Creator doesn’t work

Debug JS in cocos Creator doesn’t work
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#1

I use this guide
http://www.cocos2d-x.org/docs/creator/en/publish/debug-native.html
to debug Cocos Creator with vscode but doesn’t work
I have 1.7.0 Cocos and Firefox Quantum with vscode 1.19.1

There are some extension for Firefox or I need to download some package for vscode to work with Firefox?