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module.exports = link
link.ifExists = linkIfExists
var fs = require("graceful-fs")
, chain = require("slide").chain
, mkdir = require("./mkdir-p.js")
, rm = require("rimraf")
, log = require("./log.js")
, path = require("path")
, relativize = require("./relativize.js")
, npm = require("../npm.js")
function linkIfExists (from, to, gently, cb) {
fs.stat(from, function (er) {
if (er) return cb()
link(from, to, gently, cb)
})
}
function link (from, to, gently, cb) {
if (typeof cb !== "function") cb = gently, gently = null
if (npm.config.get("force")) gently = false
chain
( [ [fs, "stat", from]
, [rm, to, { gently: gently }]
, [mkdir, path.dirname(to)]
, [fs, "symlink", relativize(from, to), to] ]
, cb)
}
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