node/deps/npm/lib/root.js

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module.exports = root
var npm = require("./npm.js")
, output = require("./utils/output.js")
root.usage = "npm root\nnpm root -g\n(just prints the root folder)"
function root (args, cb) {
output.write(npm.dir, function (er) { cb(er, npm.dir) })
}