@aws-sdk/config-resolver/dist-es/endpointsConfig/resolveEndpointsConfig.js

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import { normalizeProvider } from "@aws-sdk/util-middleware";
import { getEndpointFromRegion } from "./utils/getEndpointFromRegion";
export const resolveEndpointsConfig = (input) => {
    const useDualstackEndpoint = normalizeProvider(input.useDualstackEndpoint);
    const { endpoint, useFipsEndpoint, urlParser } = input;
    return {
        ...input,
        tls: input.tls ?? true,
        endpoint: endpoint
            ? normalizeProvider(typeof endpoint === "string" ? urlParser(endpoint) : endpoint)
            : () => getEndpointFromRegion({ ...input, useDualstackEndpoint, useFipsEndpoint }),
        isCustomEndpoint: !!endpoint,
        useDualstackEndpoint,
    };
};