Using the Underscore module with Node js

Question

I ve been learning about node js and modules  and can t seem to get the Underscore library to work properly    it seems that the first time I use a function from Underscore  it overwrites the   object with the result of my function call   Anyone know what s going on   For example  here is a session from the node js REPL   Admin-MacBook-Pro test admin  node  gt  require    underscore-min      Function        Circular     VERSION   1 1 4     forEach   Function     each   Function     map   Function     inject   Function         more functions       templateSettings    evaluate    lt     s S      gt  g  interpolate    lt      s S      gt  g      template   Function     gt    max  1 2 3   3  gt    max  4 5 6   TypeError  Object 3 has no method  max      at  object Context  1 3     at Interface  lt anonymous gt   repl js 171 22      at Interface emit  events js 64 17      at Interface  onLine  readline js 153 10      at Interface  line  readline js 408 8      at Interface  ttyWrite  readline js 585 14      at ReadStream  lt anonymous gt   readline js 73 12      at ReadStream emit  events js 81 20      at ReadStream  emitKey  tty posix js 307 10      at ReadStream onData  tty posix js 70 12   gt    3   When I make Javascript files myself and import them  they seem to be working properly  Maybe there s something special with the Underscore library

User · Answer

Note  The following only works for the next line of code  and only due to a coincidence   With Lodash   require  lodash      isArray         true   No var     require  lodash   since Lodash mysteriously sets this value globally when required

User · Answer

As of today  April 30  2012  you can use Underscore as usual on your Node js code  Previous comments are right pointing that REPL interface  Node s command line mode  uses the     to hold the last result BUT on you are free to use it on your code files and it will work without a problem by doing the standard   var     require  underscore      Happy coding

User · Answer

The Node REPL uses the underscore variable to hold the result of the last operation  so it conflicts with the Underscore library s use of the same variable  Try something like this   Admin-MacBook-Pro test admin  node  gt   und   require    underscore-min      Function        Circular     VERSION   1 1 4     forEach   Function     each   Function     map   Function     inject   Function         more functions       templateSettings    evaluate    lt     s S      gt  g  interpolate    lt      s S      gt  g      template   Function     gt   und max  1 2 3   3  gt   und max  4 5 6   6

User · Answer

Or        var     require  underscore

User · Answer

The name   used by the node js REPL to hold the previous input  Choose another name

[node.js] Using the Underscore module with Node.js

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