--- /dev/null
+/*
+for each pkg in prefix that isn't a git repo
+ look for a new version of pkg that satisfies dep
+ if so, install it.
+ if not, then update it
+*/
+
+module.exports = update
+
+update.usage = "npm update [pkg]"
+
+var npm = require("./npm.js")
+ , asyncMap = require("slide").asyncMap
+ , log = require("npmlog")
+
+ // load these, just so that we know that they'll be available, in case
+ // npm itself is getting overwritten.
+ , install = require("./install.js")
+ , build = require("./build.js")
+
+update.completion = npm.commands.outdated.completion
+
+function update (args, cb) {
+ npm.commands.outdated(args, true, function (er, outdated) {
+ if (er) return cb(er)
+
+ var wanted = outdated.filter(function (ww) {
+ var dep = ww[1]
+ var current = ww[2]
+ var wanted = ww[3]
+ var latest = ww[4]
+ if (current === wanted && wanted !== latest) {
+ log.verbose(
+ 'outdated',
+ 'not updating', dep,
+ "because it's currently at the maximum version that matches its specified semver range"
+ )
+ }
+ return current !== wanted
+ })
+ if (wanted.length === 0) return cb()
+
+ log.info('outdated', 'updating', wanted)
+ asyncMap(wanted, function (ww, cb) {
+ // [[ dir, dep, has, want, req ]]
+ var where = ww[0]
+ , dep = ww[1]
+ , want = ww[3]
+ , what = dep + "@" + want
+ , req = ww[5]
+ , url = require('url')
+
+ // use the initial installation method (repo, tar, git) for updating
+ if (url.parse(req).protocol) what = req
+ npm.commands.install(where, what, cb)
+ }, cb)
+ })
+}