Initial

resources/app/node_modules/@aws-sdk/region-config-resolver/dist-es/regionConfig/config.js

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+export const REGION_ENV_NAME = "AWS_REGION";
+export const REGION_INI_NAME = "region";
+export const NODE_REGION_CONFIG_OPTIONS = {
+    environmentVariableSelector: (env) => env[REGION_ENV_NAME],
+    configFileSelector: (profile) => profile[REGION_INI_NAME],
+    default: () => {
+        throw new Error("Region is missing");
+    },
+};
+export const NODE_REGION_CONFIG_FILE_OPTIONS = {
+    preferredFile: "credentials",
+};

resources/app/node_modules/@aws-sdk/region-config-resolver/dist-es/regionConfig/getRealRegion.js

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+import { isFipsRegion } from "./isFipsRegion";
+export const getRealRegion = (region) => isFipsRegion(region)
+    ? ["fips-aws-global", "aws-fips"].includes(region)
+        ? "us-east-1"
+        : region.replace(/fips-(dkr-|prod-)?|-fips/, "")
+    : region;

resources/app/node_modules/@aws-sdk/region-config-resolver/dist-es/regionConfig/index.js

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+export * from "./config";
+export * from "./resolveRegionConfig";

resources/app/node_modules/@aws-sdk/region-config-resolver/dist-es/regionConfig/isFipsRegion.js

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+export const isFipsRegion = (region) => typeof region === "string" && (region.startsWith("fips-") || region.endsWith("-fips"));

resources/app/node_modules/@aws-sdk/region-config-resolver/dist-es/regionConfig/resolveRegionConfig.js

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+import { getRealRegion } from "./getRealRegion";
+import { isFipsRegion } from "./isFipsRegion";
+export const resolveRegionConfig = (input) => {
+    const { region, useFipsEndpoint } = input;
+    if (!region) {
+        throw new Error("Region is missing");
+    }
+    return {
+        ...input,
+        region: async () => {
+            if (typeof region === "string") {
+                return getRealRegion(region);
+            }
+            const providedRegion = await region();
+            return getRealRegion(providedRegion);
+        },
+        useFipsEndpoint: async () => {
+            const providedRegion = typeof region === "string" ? region : await region();
+            if (isFipsRegion(providedRegion)) {
+                return true;
+            }
+            return typeof useFipsEndpoint !== "function" ? Promise.resolve(!!useFipsEndpoint) : useFipsEndpoint();
+        },
+    };
+};