I am using nest.js and I want to import object defined in auth.parameters.ts file. File is defined as below. It appears environmental variable is not visible unless below variable is declared in class.
export const obj = {
somevar : process.env.CUSTOM_VAR,
};
In my other classes I would like to import the file with import {SecurityParameters } from '../auth/auth.parameters'
and access the variable with console.log(SecurityParameters.somevar).
I can access the variable directly using process.env.CUSTOM_VAR or
I get undefined if I use somevar : process.env.CUSTOM_VAR in other file.
I am using nest.js and I want to import object defined in auth.parameters.ts file. File is defined as below. It appears environmental variable is not visible unless below variable is declared in class.
export const obj = {
somevar : process.env.CUSTOM_VAR,
};
In my other classes I would like to import the file with import {SecurityParameters } from '../auth/auth.parameters'
and access the variable with console.log(SecurityParameters.somevar).
I can access the variable directly using process.env.CUSTOM_VAR or
I get undefined if I use somevar : process.env.CUSTOM_VAR in other file.
Share Improve this question edited Apr 16, 2021 at 0:44 user11380842 asked Apr 15, 2021 at 22:33 user11380842user11380842 733 silver badges8 bronze badges 5-
Do you use a
.envfile,dotenv,@nestjs/config? We need more info here. – Jay McDoniel Commented Apr 15, 2021 at 22:34 - Yes, I use .env file. I think process.env variable works only in class. It’s not visible if object is not declared in a class. – user11380842 Commented Apr 16, 2021 at 0:36
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1
How do you populate
process.envfrom the.envfile?dotenvor@nestjs/configor something else entirely? – Jay McDoniel Commented Apr 16, 2021 at 0:57 - I populate using .env and I have @nestjs/config in app.module.ts with isGobal setting to true. My environment variable is visible in all files except the file where const obj is defined – user11380842 Commented Apr 16, 2021 at 1:11
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That means some module loads/imports
'../auth/auth.parameters'before@nestjs/configis loaded, but it was loaded by the time that your class is instantiated. – Bergi Commented Apr 16, 2021 at 1:17
2 Answers
Reset to default 7As you're using Nest's ConfigModule, then unless you're creating a custom config file you shouldn't be doing anything with process.env. Instead, you should be injecting Nest's ConfigService where you need the environment variables and using this.configService.get('CUSTOM_VARIABLE') (or whatever value you need). To get started with this, you need to import the config module
import { Module } from '@nestjs/mon';
import { ConfigModule } from '@nestjs/config';
@Module({
imports: [ConfigModule.forRoot()],
})
export class AppModule {}
You can pass { isGlobal: true } to the forRoot() call to make the ConfigService injectable anywhere in your application.
If you want a different approach where you can use the process.env object instead, you can add this as the first two lines of your main.ts
import { config } from 'dotenv';
config();
Nest calls this (or something similar) under the hood in the ConfigService, but that doesn't make it immediately available.
you can call process.evt.xxxx in function, if call other >> undefined