update packages to latest version

node_modules/npm/lib/update.js

@@ -0,0 +1,58 @@
+/*
+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outdated.completion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+  npm.commands.outdated(args, true, function (er, outdated) {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+    var wanted = outdated.filter(function (ww) {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+          'outdated',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+    log.info('outdated', 'updating', wanted)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)
+  })
+}