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exporting consts from CommonJS app amd require them in another file

I want to export const config from config.js file in CommonJs app.

const config = {
    development: {
        client: 'pg',
        connection: {
            database: 'myDatabase',
            user: 'myUser',
            host: 'localhost',
            password: 'password',
            port: PORT,
            ssl: {
                rejectUnauthorized: false
            }
        },
        server: {
            host: '127.0.0.1',
            port: 'PORT2'
        }
    }

module.exports = config;

and in index.js I require that like

var env = process.env.NODE_ENV || 'development';
const config = require('./config')[env];

const knexDB = knex({
    client: config.client, 
    connection: {
        database: config.database,
        user: config.user,
        host: config.host,
        password: config.password,
        port: config.port,
        ssl: {
            rejectUnauthorized: false
        }
    }
});

But in the config file. IntelliSense recommends changing module.exports to ES export which I don't want to do and keep the app CommonJS. also, config object in index.js I have this error :

Property 'host' does not exist on type '{ development: { client: string; connection: { database: string; user: string; host: string; password: string; port: number; ssl: { rejectUnauthorized: boolean; }; }; server: { host: string; port: string; }; }; production: { ...; }; }'.ts(2339)

How can I export config from config.js?

about 1 month ago ·

Juan Pablo Isaza

3 answers

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Answer 1 · 2022-07-13T12:30:45.252Z

You're getting the wrong property of config. It must be config.development.host . give up on the vscode requesting a CommonJS module.leave it alone. You also have 2 options more to configure your constant data.

yarn add dotenv
npm install config

Answer 2 · 2022-07-13T12:30:45.258Z

Check config file you Db details is inside config.development.connection but you are reading it from config.

const knexDB = knex({
    client: config.development.client, 
    connection: {
        database: config.development.connection.database,
        user: config.development.connection.user,
        host: config.development.connection.host,
        password: config.development.connection.password,
        port: config.development.connection.port,
        ssl: {
            rejectUnauthorized: false
        }
    }

But instead of this use config or env

Answer 3 · 2022-07-13T12:30:45.264Z

well, I found a way to work around it. I removed connection from development and it worked! just mention I used config.connection.client and config.development.connection.client or other variables in the connection but still not working in the index.js. so it looks like

const config = {
    development: {
        client: 'pg',
        database: 'myDatabase',
        user: 'myUser',
        host: 'localhost',
        password: 'password',
        port: PORT,
        ssl: {
            rejectUnauthorized: false
        }
        server: {
            host: '127.0.0.1',
            port: 'PORT2'
        }
    }

module.exports = config;

and in index.js I access that like

const configure = require('./config.js')[env];
const knexDB = knex({
    client: configure.client, 
    connection: {
        database: configure.database, 
        user: configure.user,
        host: configure.host,
        password: configure.password,
        port: configure.port,
        ssl: {
            rejectUnauthorized: false
        }
    }
});

thanks for everyone for thier contribution.