1 files changed, 80 insertions, 0 deletions
diff --git a/node_modules/global-prefix/index.js b/node_modules/global-prefix/index.js
new file mode 100644
index 000000000..591f6be8b
--- /dev/null
+++ b/node_modules/global-prefix/index.js
@@ -0,0 +1,80 @@
+/*!
+ * global-prefix <https://github.com/jonschlinkert/global-prefix>
+ *
+ * Copyright (c) 2015 Jon Schlinkert.
+ * Licensed under the MIT license.
+ */
+
+'use strict';
+
+var fs = require('fs')
+var path = require('path');
+var osenv = require('osenv');
+var ini = require('ini');
+
+var prefix;
+
+if (process.env.PREFIX) {
+  prefix = process.env.PREFIX;
+} else {
+  // Start by checking if the global prefix is set by the user
+  var userConfig = path.resolve(osenv.home(), '.npmrc');
+  prefix = readPrefix(userConfig);
+
+  if (!prefix) {
+    // Otherwise find the path of npm
+    var npm = npmPath();
+    if (npm) {
+      // Check the built-in npm config file
+      var builtinConfig = path.resolve(npm, '..', '..', 'npmrc');
+      prefix = readPrefix(builtinConfig);
+
+      if (prefix) {
+        // Now the global npm config can also be checked.
+        var globalConfig = path.resolve(prefix, 'etc', 'npmrc');
+        prefix = readPrefix(globalConfig) || prefix;
+      }
+    }
+
+    if (!prefix) fallback();
+  }
+}
+
+function fallback() {
+  var isWindows = require('is-windows');
+  if (isWindows()) {
+    // c:\node\node.exe --> prefix=c:\node\
+    prefix = process.env.APPDATA
+      ? path.join(process.env.APPDATA, 'npm')
+      : path.dirname(process.execPath);
+  } else {
+    // /usr/local/bin/node --> prefix=/usr/local
+    prefix = path.dirname(path.dirname(process.execPath));
+
+    // destdir only is respected on Unix
+    if (process.env.DESTDIR) {
+      prefix = path.join(process.env.DESTDIR, prefix);
+    }
+  }
+}
+
+function npmPath() {
+  try {
+    return fs.realpathSync(require('which').sync('npm'))
+  } catch (ex) {
+  }
+  return false
+}
+
+function readPrefix(configPath) {
+  try {
+    var data = fs.readFileSync(configPath, 'utf-8');
+    var config = ini.parse(data);
+    if (config.prefix) return config.prefix;
+  } catch (ex) {
+    // file not found
+  }
+  return false;
+}
+
+module.exports = prefix;