chore: import upstream snapshot with attribution

packages/pages-shared/metadata-generator/createMetadataObject.ts

@@ -0,0 +1,65 @@
+import {
+	constructHeaders,
+	constructRedirects,
+} from "@cloudflare/workers-shared/utils/configuration/constructConfiguration";
+import { ANALYTICS_VERSION } from "./constants";
+import type { Metadata } from "./types";
+import type {
+	Logger,
+	ParsedHeaders,
+	ParsedRedirects,
+} from "@cloudflare/workers-shared/utils/configuration/types";
+
+const noopLogger = {
+	debug: (_message: string) => {},
+	log: (_message: string) => {},
+	info: (_message: string) => {},
+	warn: (_message: string) => {},
+	error: (_error: Error) => {},
+};
+
+export function createMetadataObject({
+	redirects,
+	headers,
+	redirectsFile,
+	headersFile,
+	webAnalyticsToken,
+	deploymentId,
+	failOpen,
+	logger = noopLogger,
+}: {
+	redirects?: ParsedRedirects;
+	headers?: ParsedHeaders;
+	redirectsFile?: string;
+	headersFile?: string;
+	webAnalyticsToken?: string;
+	deploymentId?: string;
+	failOpen?: boolean;
+	logger?: Logger;
+}): Metadata {
+	return {
+		...constructRedirects({ redirects, redirectsFile, logger }),
+		...constructHeaders({ headers, headersFile, logger }),
+		...constructWebAnalytics({ webAnalyticsToken, logger }),
+		deploymentId,
+		failOpen,
+	};
+}
+
+function constructWebAnalytics({
+	webAnalyticsToken,
+}: {
+	webAnalyticsToken?: string;
+	logger: Logger;
+}) {
+	if (!webAnalyticsToken) {
+		return {};
+	}
+
+	return {
+		analytics: {
+			version: ANALYTICS_VERSION,
+			token: webAnalyticsToken,
+		},
+	};
+}