Prevent Node from adding paths outside this app to search paths

atom/common/lib/reset-search-paths.coffee

@@ -0,0 +1,29 @@
+path   = require 'path'
+Module = require 'module'
+
+# Clear Node's global search paths.
+Module.globalPaths.length = 0
+
+# Clear current and parent(init.coffee)'s search paths.
+module.paths = []
+module.parent.paths = []
+
+# Prevent Node from adding paths outside this app to search paths.
+Module._nodeModulePaths = (from) ->
+  from = path.resolve from
+
+  # If "from" is outside the app then we do nothing.
+  skipOutsidePaths = from.startsWith process.resourcesPath
+
+  # Following logoic is copied from module.js.
+  splitRe = if process.platform is 'win32' then /[\/\\]/ else /\//
+  paths = []
+
+  parts = from.split splitRe
+  for part, tip in parts by -1
+    continue if part is 'node_modules'
+    dir = parts.slice(0, tip + 1).join path.sep
+    break if skipOutsidePaths and not dir.startsWith process.resourcesPath
+    paths.push path.join(dir, 'node_modules')
+
+  paths