安装帮助程序文件的节点模块在安装时导致“找不到模块”错误

Question

Apologies in advance, I'm sure there's a simple answer in an obvious thread I've just failed to find it/understand it.

Given a node.js module Jimmy implemented in the global node_modules/Jimmy/index.js file; I have a few 'helper' functions that I put in a separate Helper.js file, all in the same directory. Works great when I run a sample program require ing it from the same directory, but running that same sample program from anywhere else, it fails to load the supporting Helper.js file:

    Error: Cannot find module 'Helper'

Can someone explain or point me to an explanation of why this doesn't work and what I should be doing to make it work?

Edit: Dumbed it down to just demo the problem. Including the Swagger-client dependency just in case that matters.

Node Module is called Jimmy in the directory ~/Jimmy .

Module class defined in ~/Jimmy/index.js :

var Swagger = require('swagger-client');
var Helper  = require('Helper');
function Jimmy (host, username, password) {
    this._host = host;
    this._hdr = {
        'Authorization': 'Basic ' + new     Buffer(username+':'+password).toString('base64') ,
        'Content-Type': 'application/json'
    };
}
Jimmy.prototype.getEntity = function(entity) {
    return Helper.get(this._host, this._hdr, entity);
}
module.exports =
{
    Jimmy: Jimmy
};

Module helper function defined in ~/Jimmy/Helper.js :

var Swagger = require('swagger-client');
function get(host, hdr, entity) {
    var url = 'http://'+host+'/config/' + entity;
    var request = {
        url    : url,
        headers: hdr
    };
    return Swagger.http(request)
        .then( (res) => { return res.body; });
}
module.exports =
{
    get : get
};

And sample test in ~/test.js :

var jimmy = require('Jimmy');
var j = new jimmy.Jimmy('192.168.56.151:8080', 'admin', 'admin');
j.getEntity('joey')
    .then( (e) => {
        console.log(JSON.stringify(e, null, 2));
    })
    .catch( (err) => { console.log('ERR: ' + err); });

Answer 1

Sorry, found my mistake; in case anybody else makes this, for a local file within the module I made it work by referencing it via a relative pathname.

So in my case where from my module's index.js I only wanted the local version of Helper.js I wanted:

var Helper  = require('./Helper'); // works

rather than:

var Helper  = require('Helper'); // 'not found' error