This post explains the steps to install and uninstall node on mac Os Sierra Version 10.12.5 with use of brew tool.

I  ran following commands (step by step) :

1. brew –versions node
2. brew unlink node
3. brew install node6-lts
4. brew link node6-lts
5. brew link –force node6-lts
6. node –version

Here are the screenshots for the same :

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