feat(nf): cache read federation config

Author: manfredsteyer

libs/native-federation-runtime/src/lib/model/externals.ts

@@ -1,6 +1,7 @@
 import { SharedInfo } from './federation-info';
+import { globalCache } from './global-cache';
 
-const externals = new Map<string, string>();
+const externals = globalCache.externals;
 
 function getExternalKey(shared: SharedInfo) {
   return `${shared.packageName}@${shared.version}`;

libs/native-federation-runtime/src/lib/model/global-cache.ts

@@ -0,0 +1,23 @@
+import { Remote } from './remotes';
+
+export const nfNamespace = '__NATIVE_FEDERATION__';
+
+export type NfCache = {
+  externals: Map<string, string>;
+  remoteNamesToRemote: Map<string, Remote>;
+  baseUrlToRemoteNames: Map<string, string>;
+};
+
+export type Global = {
+  [nfNamespace]: NfCache;
+};
+
+const global = globalThis as unknown as Global;
+
+global[nfNamespace] ??= {
+  externals: new Map<string, string>(),
+  remoteNamesToRemote: new Map<string, Remote>(),
+  baseUrlToRemoteNames: new Map<string, string>(),
+};
+
+export const globalCache = global[nfNamespace];

libs/native-federation-runtime/src/lib/model/remotes.ts

@@ -1,11 +1,12 @@
 import { FederationInfo } from './federation-info';
+import { globalCache } from './global-cache';
 
 export type Remote = FederationInfo & {
   baseUrl: string;
 };
 
-const remoteNamesToRemote = new Map<string, Remote>();
-const baseUrlToRemoteNames = new Map<string, string>();
+const remoteNamesToRemote = globalCache.remoteNamesToRemote;
+const baseUrlToRemoteNames = globalCache.baseUrlToRemoteNames;
 
 export function addRemote(remoteName: string, remote: Remote): void {
   remoteNamesToRemote.set(remoteName, remote);