Global function to resolve paths for NodeJS modules

node-path-alias.js

// This is ugly
// const Service = require('../app/services/Service');

// Try this instead
// const Service = alias('service/Service')

const path = require('path');

const aliases = {
    config: './config',
    bootstrap: './bootstrap',
    errors: './app/errors',
    app: './app',
    http: './app/http',
    models: './app/models',
    controllers: './app/http/controllers',
    services: './app/services',
    routes: './routes',
    middleware: './app/http/middleware',
};

alias = function(dir) {
    const dirArr = dir.split('/');
    if(dirArr.length > 1) {
        const mod = dirArr.pop();
        const newDirArr = dirArr.join('/');
        if(aliases[newDirArr]) {
            return require(path.resolve(aliases[newDirArr], mod));
        }
        return require(path.resolve(newDirArr, mod));
    }
    if(aliases[dirArr[0]]) {
        return require(path.resolve(aliases[dirArr[0]]));
    }
    return require(path.resolve(dir));
};