Here is 3 flows that can be combined, it is set for my system but the exec commands could be adjusted for most systems.
The first flow check for npm node-red modules that need updating and outputs a js object.
The second can take that object and search and output packages that need updating. It can search on msg.wanted patch or minor or major and update to msg.latest true or false for wanted or latest. (work in progress on versions, still in test phase)
The final flow will take the output of module name and version and run npm install on each.
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