serverless-spy
Version:
CDK-based library for writing elegant integration tests on AWS serverless architecture and an additional web console to monitor events in real time.
22 lines (21 loc) • 579 B
JavaScript
import { ProviderError } from "./ProviderError";
export const chain = (...providers) => async () => {
if (providers.length === 0) {
throw new ProviderError("No providers in chain");
}
let lastProviderError;
for (const provider of providers) {
try {
const credentials = await provider();
return credentials;
}
catch (err) {
lastProviderError = err;
if (err?.tryNextLink) {
continue;
}
throw err;
}
}
throw lastProviderError;
};