initial commit

2026-05-13 14:20:41 +00:00
commit 6e178d2012
6022 changed files with 399872 additions and 0 deletions
@@ -0,0 +1,60 @@
+export function memoizeChain(providers, treatAsExpired) {
+    const chain = internalCreateChain(providers);
+    let activeLock;
+    let passiveLock;
+    let credentials;
+    const provider = async (options) => {
+        if (options?.forceRefresh) {
+            return await chain(options);
+        }
+        if (credentials?.expiration) {
+            if (credentials?.expiration?.getTime() < Date.now()) {
+                credentials = undefined;
+            }
+        }
+        if (activeLock) {
+            await activeLock;
+        }
+        else if (!credentials || treatAsExpired?.(credentials)) {
+            if (credentials) {
+                if (!passiveLock) {
+                    passiveLock = chain(options)
+                        .then((c) => {
+                        credentials = c;
+                    })
+                        .finally(() => {
+                        passiveLock = undefined;
+                    });
+                }
+            }
+            else {
+                activeLock = chain(options)
+                    .then((c) => {
+                    credentials = c;
+                })
+                    .finally(() => {
+                    activeLock = undefined;
+                });
+                return provider(options);
+            }
+        }
+        return credentials;
+    };
+    return provider;
+}
+export const internalCreateChain = (providers) => async (awsIdentityProperties) => {
+    let lastProviderError;
+    for (const provider of providers) {
+        try {
+            return await provider(awsIdentityProperties);
+        }
+        catch (err) {
+            lastProviderError = err;
+            if (err?.tryNextLink) {
+                continue;
+            }
+            throw err;
+        }
+    }
+    throw lastProviderError;
+};