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127

How to save changes in .env file in node.js

rated 0 times [ 130] [ 3] / answers: 1 / hits: 17249 / 6 Years ago, sun, november 18, 2018, 12:00:00

I use dotenv for read environment variable. like this:

let dotenv = require('dotenv').config({ path: '../../.env' });

console.log(process.env.DB_HOST);

Now I wanna to save changes in .env file. I can't find any way to save variable in .env file. What should I do?

process.env.DB_HOST = '192.168.1.62';

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kaitlynd

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3 Years ago

answered 6 Years ago travion · Accepted Answer

.env file

VAR1=var1Value

VAR_2=var2Value

index.js file

    const fs = require('fs') 

    const envfile = require('envfile')

    const sourcePath = '.env'

    console.log(envfile.parseFileSync(sourcePath))

    let parsedFile = envfile.parseFileSync(sourcePath);

    parsedFile.NEW_VAR = 'newVariableValue'

    fs.writeFileSync('./.env', envfile.stringifySync(parsedFile)) 

    console.log(envfile.stringifySync(parsedFile))

final .env file
install required modules and execute index.js file

VAR1=var1Value

VAR_2=var2Value

NEW_VAR=newVariableValue