node.js - NPM - Can't install socket.IO -


i trying install socket.io on windows npm use on nodejs server.

first, when typed "npm install socket.io" had error in log saying python , node-gyp. installed python 2.7.3 , set environment variables.

now got new error, has visual studio (what hell vs have npm ? compiler? ).

the error same here npm install packages (sqlite3, socket.io) fail error msb8020 on windows 7 when use option in answer instead of error tells me possible data loss (c4267) doesn't log error.

then when start app, tells me cannot find module socket.io still come ?

oh , when npm config root tells me "undefined" have ? should install modules globally or locally ?

at least 1 of packages in socket.io's dependency tree c/c++ addons needs compiled on system it's installed. and, since it's dependency, if doesn't succeed in installing, neither socket.io.

to enable cross-system compilation, node.js uses node-gyp build system. you'll need have installed global package:

npm install -g node-gyp

as have its dependencies installed. abridged version:

  • python 2
  • c/c++ compiler / build tools
    • for windows, microsoft visual studio 2013 (c++ or windows desktop) (express edition)
      • for 64-bit, may need windows 7 64-bit sdk

then, should able install socket.io local package can require it:

npm install socket.io

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