require statements for local node_modules is not working in truffle exec

[shota-takizawa]

• I've asked for help in the Truffle Gitter before filing this issue.

---

Issue

Can't use local installed node_modules in external scripts and migration files.
This issue is same as #255 and #259.
requre statements for global node_modules is fixed by Truffle 3.1.10, but local is not.

Steps to Reproduce

Run truffle exec ext/sample.js in following project.
Truffle is installed global, local_node_module is only local.

/home/user/myProject/
.
+ build/
+ contracts/
+ ext/
    + sample.js # <- contains `require('local_node_module')` statement
+ migrations/
+ node_modules/
    + local_node_module/
+ test/
+ truffle.js

Results

Error: Cannot find module 'local_node_module'

Cause

Truffle looks only /home/user/myProject/ext/node_modules, but expected location is /home/user/myProject/node_modules.

Node.js looks parent directory if can not find node_modules.
https://nodejs.org/api/modules.html#modules_loading_from_node_modules_folders

This behavior is not implemented on Truffle.

Environment

• Operating System: Ubuntu 16.04.2 LTS
• Truffle version: 3.1.10

Pull Request

trufflesuite/truffle-require#1

[travs]

I have the same problem; temporary fix is to point to it with a relative path e.g.

require('../node_modules/express')

Looking forward to the next release 😄

[tcoulter]

This bug is fixed, but we never pushed out a new version. Added tests here. Will push out a new version of Truffle with the fix once the changes are approved. trufflesuite/truffle-require#6