deps: upgrade npm to 5.3.0

PR-URL: https://github.com/nodejs/node/pull/14235
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/deps/npm/node_modules/libnpx/get-prefix.js b/deps/npm/node_modules/libnpx/get-prefix.js
new file mode 100644
index 0000000000..71bedffc58
--- /dev/null
+++ b/deps/npm/node_modules/libnpx/get-prefix.js
@@ -0,0 +1,54 @@
+'use strict'
+
+const promisify = require('./util.js').promisify
+
+const path = require('path')
+const statAsync = promisify(require('fs').stat)
+
+module.exports = getPrefix
+function getPrefix (current, root) {
+  if (!root) {
+    const original = root = path.resolve(current)
+    while (path.basename(root) === 'node_modules') {
+      root = path.dirname(root)
+    }
+    if (original !== root) {
+      return Promise.resolve(root)
+    } else {
+      return getPrefix(root, root)
+    }
+  }
+  if (isRootPath(current, process.platform)) {
+    return Promise.resolve(root)
+  } else {
+    return Promise.all([
+      fileExists(path.join(current, 'package.json')),
+      fileExists(path.join(current, 'node_modules'))
+    ]).then(args => {
+      const hasPkg = args[0]
+      const hasModules = args[1]
+      if (hasPkg || hasModules) {
+        return current
+      } else {
+        const parent = path.dirname(current)
+        return getPrefix(parent, root)
+      }
+    })
+  }
+}
+
+module.exports._fileExists = fileExists
+function fileExists (f) {
+  return statAsync(f).catch(err => {
+    if (err.code !== 'ENOENT') {
+      throw err
+    }
+  })
+}
+
+module.exports._isRootPath = isRootPath
+function isRootPath (p, platform) {
+  return platform === 'win32'
+  ? p.match(/^[a-z]+:[/\\]?$/i)
+  : p === '/'
+}