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Lorna Watson
Lorna Watson

Posted on • Edited on

Deploying Node.js app with Heroku config vars

#node #heroku #todayilearned

I tried to deploy my Node.js project via Heroku and got the following error message:

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To see more details, I cd into the project’s directory and enter heroku logs --tail. The error is Cannot find module '../../config'.

config.js file 🧾

I have a config.js file at the project root (and is included in .gitignore so secrets not exposed!!):

var config = {}; config.baseUrl = "http://teamcity:8111/app/rest"; config.apiKey = "XXX"; module.exports = config;
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Function before

My code looked like this (striped out irrelevant bits):

const axios = require('axios'), config = require("../../config"); // ✨ exports.getAll = (req, res) => { axios({ method: "get", url: `${config.teamCityBaseUrl}/builds`, headers: { 'Authorization': config.teamCityApiKey } }).then(response => { res.send(response.data); }).catch(error => { console.log(error); }); };
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Solution ✅

Add your new config vars in Heroku and then access them in your code like process.env.TEAM_CITY_BASE_URL.

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Function after 

const axios = require('axios'); exports.getAll = (req, res) => { axios({ method: "get", url: `${process.env.TEAM_CITY_BASE_URL}/builds`, headers: { 'Authorization': process.env.TEAM_CITY_API_KEY} }).then(response => { res.send(response.data); }).catch(error => { console.log(error); }); };
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🤩 Website loads perfectly with no errors 🤩

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