Class EnvAccessor<TEnvConfig>

Example

import { EnvAccessor } from "@daiso-tech/core/env-accessor";
import { z } from "zod";
import { SecretsManagerClient, GetSecretValueCommand } from "@aws-sdk/client-secrets-manager";


// Combine AWS Secrets Manager and process.env as sources
// Note: The order matters—later sources override previous ones for overlapping keys.
const secretsManager = new SecretsManagerClient({ region: "us-east-1" });
const sources = [
  process.env,
  async () => {
    const secret = await secretsManager.send(
      new GetSecretValueCommand({ SecretId: "my-app/env" })
    );
    return JSON.parse(secret.SecretString ?? "{}");
  },
];

// Define a schema for your environment variables
const schema = z.object({
  NODE_ENV: z.string(),
  PORT: z.string().default("3000").pipe(z.coerce.number()),
});

// Initialize the accessor
const accessor = new EnvAccessor({ schema, sources });
await accessor.init();

// Retrieve a value
const port = accessor.get("PORT");
Copy