节点找不到父node_modules文件夹中存在的模块

Question

I am using node 0.12.0 with express and created a Docker image.
This is my directory structure:

-server/
    -config/
        -config.js
    -app.js
    -package.json
    -node-modules/
        -deep-extend/
            -...
            -...
            -...

My package.json looks like:

{
  "name": "test",
  "version": "2.0.0",
  "private": true,
  "dependencies": {
    ...
    ...
    "deep-extend": "^0.3.2",
    ...
    ...
  }
}

and config/config.js looks like:

var deepExtend = require('deep-extend');
...
...
...
module.exports = deepExtend({}, .....);

I have an issue running this app. When running it with node server/app I got and error:

Error: Cannot find module 'deep-extend'

When running the following, the problem solved and node server/app runs fine:

cd config
npm install deep-extend

When is the problem? Why node doesn't look on parent folder for node_modules?

Answer 1

为了解决这个问题，我必须将node_modules文件夹添加到我的NODE_PATH环境变量中。