readRuntimeConfig (config/runtime.ts)

Module exposing: readRuntimeConfig, formatMongoTarget, generateNoAuthSessionSecret, throwConfigError, readRequiredEnv, parseAuthMode, parseMongoDbUri, parseNoAuthSessionSecret

// Source: https://github.com/Second-Inc/second | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
import { readPublicUrlFromEnv } from "./public-url";

const AUTH_MODES = ["none", "external"] as const;
const MIN_NO_AUTH_SESSION_SECRET_LENGTH = 32;

export type SecondAuthMode = (typeof AUTH_MODES)[number];

export type RuntimeConfig = Readonly<{
  authMode: SecondAuthMode;
  mongodbUri: string;
  noAuthSessionSecret: string;
  publicUrl: string;
}>;

let cachedRuntimeConfig: RuntimeConfig | undefined;

function generateNoAuthSessionSecret(): string {
  const bytes = new Uint8Array(32);
  globalThis.crypto.getRandomValues(bytes);
  return Array.from(bytes, (byte) => byte.toString(16).

... (truncated -- full source via MCP)