Read environment variables in Node js

Question

Is there a way to read environment variables in Node js code   Like for example Python s os environ  HOME

User · Answer

You can use env package to manage your environment variables per project:

Create a .env file under the project directory and put all of your variables there.
Add this line in the top of your application entry file:
require('dotenv').config();

Done. Now you can access your environment variables with process.env.ENV_NAME.

User · Answer

If you want to use a string key generated in your Node js program  say  var v    HOME   you can use process env v    Otherwise  process env VARNAME has to be hardcoded in your program

User · Answer

When using Node js  you can retrieve environment variables by key from the process env object   for example  var mode     process env NODE ENV  var apiKey   process env apiKey      42348901293989849243    Here is the answer that will explain setting environment variables in node js

User · Answer

To retrieve environment variables in Node JS you can use process env VARIABLE NAME  but don t forget that assigning a property on process env will implicitly convert the value to a string   Avoid Boolean Logic     Even if your  env file defines a variable like SHOULD SEND false or SHOULD SEND 0  the values will be converted to strings     false    and    0    respectively  and not interpreted as booleans    if  process env SHOULD SEND     mailer send      else     console log  this won t be reached with values like false and 0        Instead  you should make explicit checks  I   ve found depending on the environment name goes a long way    db connect     debug  process env NODE ENV      development

User · Answer

Why not use them in the Users directory in the  bash profile file  so you don t have to push any files with your variables to production

User · Answer

If you want to see all the Enviroment Variables on execution time just write in some nodejs file like server js  console log process env

User · Answer

process env ENV VARIABLE   Where ENV VARIABLE is the name of the variable you wish to access   See Node js docs for process env

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