Function return type is illegal, not sure how this passed eslint (#21567) (#21622)

Co-authored-by: Alex van Andel <me@alexvanandel.com>

apps/web/test/lib/getSchedule.test.ts

@@ -27,6 +27,7 @@ vi.mock("@calcom/lib/constants", () => ({
   IS_PRODUCTION: true,
   WEBAPP_URL: "http://localhost:3000",
   RESERVED_SUBDOMAINS: ["auth", "docs"],
+  SINGLE_ORG_SLUG: "",
 }));
 
 describe("getSchedule", () => {

apps/web/test/lib/getSchedule/futureLimit.timezone.test.ts

@@ -66,6 +66,7 @@ vi.mock("@calcom/lib/constants", () => ({
   WEBAPP_URL: "http://localhost:3000",
   RESERVED_SUBDOMAINS: ["auth", "docs"],
   ROLLING_WINDOW_PERIOD_MAX_DAYS_TO_CHECK: 61,
+  SINGLE_ORG_SLUG: "",
 }));
 
 describe("getSchedule", () => {

packages/features/ee/organizations/lib/orgDomains.ts

@@ -1,7 +1,7 @@
 import type { Prisma } from "@prisma/client";
 import type { IncomingMessage } from "http";
 
-import { IS_PRODUCTION, WEBSITE_URL } from "@calcom/lib/constants";
+import { IS_PRODUCTION, WEBSITE_URL, SINGLE_ORG_SLUG } from "@calcom/lib/constants";
 import { ALLOWED_HOSTNAMES, RESERVED_SUBDOMAINS, WEBAPP_URL } from "@calcom/lib/constants";
 import logger from "@calcom/lib/logger";
 import slugify from "@calcom/lib/slugify";
@@ -26,6 +26,12 @@ export function getOrgSlug(hostname: string, forcedSlug?: string) {
     });
   }
 
+  // If SINGLE_ORG_SLUG is set we know that the Cal.com instance is configured to run just one organization, so we can return the slug directly.
+  if (SINGLE_ORG_SLUG) {
+    log.debug("In Single Org Mode, using SINGLE_ORG_SLUG as the Org slug", { SINGLE_ORG_SLUG });
+    return SINGLE_ORG_SLUG;
+  }
+
   if (!hostname.includes(".")) {
     log.warn('Org support not enabled for hostname without "."', { hostname });
     // A no-dot domain can never be org domain. It automatically considers localhost to be non-org domain

packages/lib/__mocks__/constants.ts

@@ -20,6 +20,7 @@ const initialConstants = {
   APP_NAME: "Cal.com",
   BOOKER_NUMBER_OF_DAYS_TO_LOAD: 14,
   PUBLIC_QUICK_AVAILABILITY_ROLLOUT: 100,
+  SINGLE_ORG_SLUG: "",
 } as typeof constants;
 
 export const mockedConstants = { ...initialConstants };

packages/lib/constants.ts

@@ -7,7 +7,7 @@ export const IS_PRODUCTION = CALCOM_ENV === "production";
 export const IS_PRODUCTION_BUILD = process.env.NODE_ENV === "production";
 export const ORGANIZER_EMAIL_EXEMPT_DOMAINS = process.env.ORGANIZER_EMAIL_EXEMPT_DOMAINS || "";
 const IS_DEV = CALCOM_ENV === "development";
-
+export const SINGLE_ORG_SLUG = process.env.NEXT_PUBLIC_SINGLE_ORG_SLUG;
 /** https://app.cal.com */
 export const WEBAPP_URL =
   process.env.NEXT_PUBLIC_WEBAPP_URL ||