conversion: fix exports and strengthen IP extraction

src/lib/conversion/control.ts

@@ -58,10 +58,10 @@ export const buildCustomData = (params: Record<string, string>): CustomData => {
  */
 export type ConversionEventOptions = {
 	eventID: string;
-	eventSourceURL?: string;
 	actionSource: 'website' | 'app' | 'offline' | 'other';
 	userData: UserData;
 	customData?: CustomData;
+	eventSourceURL?: string;
 };
 
 /**

src/lib/conversion/server.ts

@@ -4,6 +4,20 @@ import type { ConversionErrorResponseBody, ConversionRequestBody } from '$lib/ty
 
 import { StatusCodes } from 'http-status-codes';
 
+const getEventIP = (request: Request, getClientAddress: () => string) => {
+	return (
+		request.headers.get('x-forwarded-for') ||
+		request.headers.get('cf-connecting-ip') ||
+		request.headers.get('x-real-ip') ||
+		request.headers.get('x-client-ip') ||
+		request.headers.get('x-cluster-client-ip') ||
+		request.headers.get('x-original-forwarded-for') ||
+		request.headers.get('forwarded-for') ||
+		request.headers.get('forwarded') ||
+		getClientAddress()
+	);
+};
+
 export const createConversionRequestHandler: (control: ConversionControl) => RequestHandler = (
 	control
 ) => {
@@ -12,7 +26,7 @@ export const createConversionRequestHandler: (control: ConversionControl) => Req
 			const body = (await request.json()) as ConversionRequestBody;
 
 			// Build user data with IP and user agent
-			const ip = getClientAddress();
+			const ip = getEventIP(request, getClientAddress);
 			const ua = request.headers.get('user-agent');
 
 			const userData = buildConversionUserData({

src/lib/index.ts

@@ -7,6 +7,7 @@ export type * as fbq from './types/fbq.d.ts';
 export { default as MetaPixel, PixelControl } from './MetaPixel.svelte';
 export * from './tracking.svelte.ts';
 export { default as Umami } from './Umami.svelte';
+export * from './conversion/index.ts';
 
 // set log level to debug if we're in dev mode
 if (dev) {