Cannot find module 'regex-trigram'

[lgessler]

Hi,

First of all thank you for sharing this library with the world--I find myself in need of Russ Cox's algorithm in a JS project and am very happy to find a port of his Go code.

The problem.
This is what I have done to reproduce the bug, both on my personal machine (OSX) and a Digital Ocean Ubuntu 14.04 droplet set up for Node:

mkdir project && cd project
npm init
vim package.json
# add:
# "dependencies": {
#   "regex-trigram": "*",
#   "pegjs": "*"
# },
npm install
echo "var regex = require('regex-trigram');" > index.js
node index.js

This produces an error:

module.js:339
    throw err;
    ^

Error: Cannot find module 'regex-trigram'
    at Function.Module._resolveFilename (module.js:337:15)
    at Function.Module._load (module.js:287:25)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)
    at Object.<anonymous> (/root/tst/index.js:2:13)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions..js (module.js:442:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Function.Module.runMain (module.js:467:10)

Attempts at solutions.

1. Installing globally with npm install -g regex-trigram does not affect the error.

2. If I change the line to var regex = require('./node_modules/regex-trigram/src/app.js');, I instead get this error:

module.js:339
    throw err;
    ^

Error: Cannot find module '../build/regex-peg'
    at Function.Module._resolveFilename (module.js:337:15)
    at Function.Module._load (module.js:287:25)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)
    at Object.<anonymous> (/root/tst/node_modules/regex-trigram/src/regex-trigram.js:19:11)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions..js (module.js:442:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)

Of course, no such directory /.../node_modules/regex-trigram/build exists, so this is expected. I see there is a Gruntfile in the directory for regex-trigram, but I suspect if I need to use grunt then I am going about requiring this package the wrong way.

[bfulton]

@lgessler thanks for reporting — will check it out today.

[lgessler]

I don't think this is a permanent solution, but I was able to get it working for now by doing the following:

# from the project's directory
cd node_modules/regex-trigram
npm install grunt --save-dev
npm install
grunt
cd ../..
vim index.js
# change require line to 
# var regex = require('./node_modules/regex-trigram/src/regex-trigram.js');
node index.js

[bfulton]

@lgessler good to know the workaround. I have been including from browser only so far, but sounds like it may be straightforward to fix the node case.

[bfulton]

Fixed in 0.0.9.