Stan
35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
import dotenv from 'dotenv';
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dotenv.config();
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const requiredKeys = ['DB_HOST', 'DB_PORT', 'DB_NAME', 'DB_USER', 'DB_PASSWORD'];
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/*
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* Environment validation happens at module load time so configuration mistakes
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* are discovered immediately. That is intentional because this service is small
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* enough that there is no benefit in deferring a misconfiguration error until a
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* later database call or request handler.
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*/
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for (const key of requiredKeys) {
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if (!process.env[key]) {
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throw new Error(`Missing required environment variable: ${key}`);
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}
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}
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/*
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* The exported env object becomes the single place where raw process variables
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* are normalized into application-friendly types such as numbers. That keeps the
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* rest of the codebase from repeating string-to-number conversion logic.
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*/
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export const env = {
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port: Number(process.env.PORT || 3000),
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db: {
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host: process.env.DB_HOST,
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port: Number(process.env.DB_PORT),
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database: process.env.DB_NAME,
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user: process.env.DB_USER,
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password: process.env.DB_PASSWORD,
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connectionLimit: Number(process.env.DB_CONNECTION_LIMIT || 5)
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}
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};
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