Accessing environment variables from a .env file within a script defined in a React Native package

I'm currently working on a React Native project and I am using the 'react-native-dotenv' library to manage some of my secrets. I have a scenario where I need to insert a particular variable from my '.env' file into a script located in my 'package.json' file.

Here's an example:

"myScript": "run my command with ${myEnvVariable}"

Answer №1

Hey there, I'm the maintainer of react-native-dotenv
. This amazing library works as a babel plugin that uses environment variables specified in your script to compile your Javascript code. Although I'll try my best to assist you with any queries regarding this topic. If you want to configure environment variables in your script, it ultimately depends on the operating system you're using.

For Unix systems like MacOS or Linux:

"start:development": "NODE_ENV=development MY_VAR=hello npx react-native start",

And for Windows Powershell:

"start:development": "Set MY_VAR=hello&& npx react-native start",

Keep in mind that the library won't be able to retrieve any values unless the script variables are set first. You'll need to access the environment variables within your code.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Can express-handlebars tags be utilized within an HTML script tag when on the client side?

For a while now, I've been facing a challenge. I'm in the process of building an application with express-handlebars and so far everything is going smoothly. The data that needs to be displayed on the webpages looks good thanks to the Helper func ...

The Node/NPM tool is mistakenly updating the package.json and package-lock.json files in my personal directory rather than the intended project directory

For a fun project with BabylonJS, I decided to create a new directory on my computer specifically for it located at ~/workspace/babylon-test. After setting up the directory, I navigated to it using the following commands: mkdir ~/workspace/babylon-test cd ...

Utilizing an NPM Mirror: A Comprehensive Guide

Oh no, the npm registry is experiencing issues once more, causing havoc with executing npm install. Query: What is the alternative method for using npm to fetch packages from npm mirrors? Can you suggest any reliable npm mirrors? ...

Tips for using nodemon to automatically restart multiple server files in npm script when making changes to the files:

Whenever I make edits to a file in the specified folder, I need the two server files to restart using nodemon within an npm script. Below is the npm script: "scripts": { "test": "echo \"Error: no test specified\" && exit 1", "start": ...

Sails.js suddenly crashed after being cloned from the repository

When I added my sails.js application to git and cloned it onto another desktop, the application stopped functioning correctly. Although I could run the sails lift command successfully, the login page failed to load properly: https://i.stack.imgur.com/YEhp ...

The child_process in Node is attempting to utilize /usr/bin/zsh, but unfortunately, it is unable to do so because

Recently, I've been encountering issues with several npm commands failing, accompanied by an error message that looks like this: npm ERR! code ELIFECYCLE npm ERR! syscall spawn /usr/bin/zsh npm ERR! file /usr/bin/zsh npm ERR! path /usr/bin/zsh npm ER ...

Encountering an error when attempting to connect a nodejs REST API to an HTTPS URL using port 844

Attempting to initiate an API call from Node.js to a Tomcat server using the http/https module. There are two options for the API URL: - Functioning correctly and receiving a response var options = { host: 'samleapiurl.com', port: ...

Importing dynamically into Ionic 2 from locations other than the "node_modules" directory

I've recently reviewed the documentation for ModuleResolution in TypeScript on this page: https://www.typescriptlang.org/docs/handbook/module-resolution.html#node My understanding is that all files I wish to import must reside within the node_modules ...

Having trouble initiating the server using npm start

Just starting out with nodeJs: I have created a server.js file and installed nodejs. However, when I try to run "npm start", I encounter the following errors. C:\Users\server\server.js:43 if (!(req.headers && req.headers. ...

Module missing from Heroku

While attempting to deploy a basic node.js server on Heroku, I consistently encounter the following error: Error: Cannot find module 'morgan' I have included morgan in my package.json under devDependencies for HTTP logging purposes, alongside v ...

When trying to install NodeJS version 14, it unexpectedly installs NodeJS version 8 instead

I'm struggling with getting nodejs up and running on my Ubuntu 18 PC. I've followed these steps one by one: sudo apt update curl -sL https://deb.nodesource.com/setup_14.x | sudo bash - sudo apt -y install nodejs After that, I checked the versio ...

docker-compose is encountering an issue where it is unable to recognize the node_modules directory created by npm

It seems like I'm not the first one to encounter this issue, but none of the solutions I've found seem to work for me. Here is my docker-compose.yml file: web: build: . volumes: - .:/src ports: - "3000:3000" And here is my Dockerfile: F ...

Path Link Not Found: Installation Issue of MacOS Electron JS

After trying to install the latest version of Electron using npm install electron@latest on my MacOS, I encountered issues while running the electron command. The error messages found in the log file are as follows: 117 error code ELIFECYCLE 118 error err ...

"Encountering issues when trying to access private npm packages on Azure DevOps

I am currently facing a challenge with Azure DevOps while working on my node application. The issue arises when private npm packages encounter a 401 error during the npm install process in the pipeline. To address this, I have tried configuring an addition ...

Creating a server that is exclusive to the application in Node.js/npm or altering the response body of outgoing requests

As I work on developing a node app, the need for a server that can be used internally by the app has become apparent. In my attempts to create a server without listening to a port, I have hit a roadblock where further actions seem impossible: let http = ...

The ESLint rule "eqeqeq" configuration is deemed incorrect

After successfully running eslint with the provided .eslintrc file, I encountered an issue when making a simple change to use 'standard' instead of 'airbnb-base' as the extend: module.exports = { root: true, parser: 'babel-esl ...

There was a hiccup during the installation of expressjs through npm at the office

Recently, I've been eager to delve into node.js and express.js. After successfully installing node.js on my office system, I attempted to install express.js using the command 'npm install express --g', only to encounter an error. I even conf ...

Steps for incorporating npm-check-update as a customized script in package.json file

Essentially, my code looks like this: "scripts": { "checkUpdate": "npm-check-updates", "updateConfig": "ncu-u" }, However, when I try to run npm checkUpdate, I receive the following output: where ...

Steps to resolve the issue of Npm missing peer dependency

I am struggling to resolve the peer dependency error below. mondwan@mondwan-All-Series:~/Documents/git/py-cli_build_tools$ sudo npm -g list | grep eslint ├─┬ <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="e4868586818 ...

ErrorHookWebpack: When executing npm build in the node container, the service is detected as inactive

Encountering an issue when executing npm run build within a container on Kubernetes during a gitlab-ci job. It's worth noting that npm install, npm run lint, and npm run test all completed without any problems. Error: node@runner-7gbsh-sz-project-966 ...