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node.jsnpmpurescript

Error: Cannot find module './pulp'

Trying to install PureScript and pulp on Windows 7 via node.js 5.3.0:

npm install -g purescript
npm install -g pulp
cd some-empty-dir
pulp init

The installations seemed to work correctly, but pulp always fails with the error:

module.js:328
    throw err;
    ^

Error: Cannot find module './pulp'
    at Function.Module._resolveFilename (module.js:326:15)
    at Function.Module._load (module.js:277:25)
    at Module.require (module.js:354:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (C:\Users\me\AppData\Roaming\npm\node_modules\pulp\index.js:2:1)
    at Module._compile (module.js:398:26)
    at Object.Module._extensions..js (module.js:405:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Function.Module.runMain (module.js:430:10)

index.js just contains these two lines:

#!/usr/bin/env node
require("./pulp");

C:\Users\me\AppData\Roaming\npm is the last part of my PATH.

where pulp returns

C:\Users\me\AppData\Roaming\npm\pulp
C:\Users\me\AppData\Roaming\npm\pulp.cmd

I tried the same with Git Bash but with the same results. I tried reinstalling purescript and pulp and node/npm but it did not change anything.

On another computer I had no problems. Something seems to interfere with my installation on this specific system. Environment variables, existing or non-existing directories, ...?

I'm not familiar with node.js and do not know where to look. Any idea what's wrong?

Edit: contents of files in path

C:\Users\me\AppData\Roaming\npm\pulp:

#!/bin/sh
basedir=`dirname "$0"`

case `uname` in
    *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
esac

if [ -x "$basedir/node" ]; then
  "$basedir/node"  "$basedir/node_modules/pulp/index.js" "$@"
  ret=$?
else 
  node  "$basedir/node_modules/pulp/index.js" "$@"
  ret=$?
fi
exit $ret

C:\Users\me\AppData\Roaming\npm\pulp.cmd:

@IF EXIST "%~dp0\node.exe" (
  "%~dp0\node.exe"  "%~dp0\node_modules\pulp\index.js" %*
) ELSE (
  @SETLOCAL
  @SET PATHEXT=%PATHEXT:;.JS;=;%
  node  "%~dp0\node_modules\pulp\index.js" %*
)

Just running the command pulp executes the "else" branch of pulp.cmd.

Solution

  • Okay, turns out that I was missing bower and/or jshint. Everybody else probably had these packages already installed since they are so common.

    I fixed the problem roughly by:

    npm uninstall -g pulp
npm install -g bower
npm install -g jshint
npm install -g pulp

    My best guess is that some postinstall script failed. Unfortunately, I cannot reproduce the problem anymore. Even after deinstalling node.js, deleting the folders in %HOME%\AppData\Roaming and reinstalling everything from scratch: pulp just works now.