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I think it is more complicated to emulate those api in normal browser environment compared to emulating some OS api for running node.js.

• kllrnohj 5y ago
  Why? It's literally JavaScript on both sides - what's complicated here?
  • maple3142 5y ago
    Because many node.js api are written in C/C++, it might be easier to implements OS features instead of rewriting in JS. This is just my assumption.