Add extracted source directory and README navigation

extracted-source/node_modules/@aws-sdk/credential-providers/dist-cjs/createCredentialChain.js

@@ -0,0 +1,45 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.propertyProviderChain = exports.createCredentialChain = void 0;
+const property_provider_1 = require("@smithy/property-provider");
+const createCredentialChain = (...credentialProviders) => {
+    let expireAfter = -1;
+    const baseFunction = async (awsIdentityProperties) => {
+        const credentials = await (0, exports.propertyProviderChain)(...credentialProviders)(awsIdentityProperties);
+        if (!credentials.expiration && expireAfter !== -1) {
+            credentials.expiration = new Date(Date.now() + expireAfter);
+        }
+        return credentials;
+    };
+    const withOptions = Object.assign(baseFunction, {
+        expireAfter(milliseconds) {
+            if (milliseconds < 5 * 60_000) {
+                throw new Error("@aws-sdk/credential-providers - createCredentialChain(...).expireAfter(ms) may not be called with a duration lower than five minutes.");
+            }
+            expireAfter = milliseconds;
+            return withOptions;
+        },
+    });
+    return withOptions;
+};
+exports.createCredentialChain = createCredentialChain;
+const propertyProviderChain = (...providers) => async (awsIdentityProperties) => {
+    if (providers.length === 0) {
+        throw new property_provider_1.ProviderError("No providers in chain", { tryNextLink: false });
+    }
+    let lastProviderError;
+    for (const provider of providers) {
+        try {
+            return await provider(awsIdentityProperties);
+        }
+        catch (err) {
+            lastProviderError = err;
+            if (err?.tryNextLink) {
+                continue;
+            }
+            throw err;
+        }
+    }
+    throw lastProviderError;
+};
+exports.propertyProviderChain = propertyProviderChain;