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@aws-sdk/middleware-user-agent

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import { normalizeProvider } from "@smithy/core"; export const DEFAULT_UA_APP_ID = undefined; function isValidUserAgentAppId(appId) { if (appId === undefined) { return true; } return typeof appId === "string" && appId.length <= 50; } export function resolveUserAgentConfig(input) { const normalizedAppIdProvider = normalizeProvider(input.userAgentAppId ?? DEFAULT_UA_APP_ID); const { customUserAgent } = input; return Object.assign(input, { customUserAgent: typeof customUserAgent === "string" ? [[customUserAgent]] : customUserAgent, userAgentAppId: async () => { const appId = await normalizedAppIdProvider(); if (!isValidUserAgentAppId(appId)) { const logger = input.logger?.constructor?.name === "NoOpLogger" || !input.logger ? console : input.logger; if (typeof appId !== "string") { logger?.warn("userAgentAppId must be a string or undefined."); } else if (appId.length > 50) { logger?.warn("The provided userAgentAppId exceeds the maximum length of 50 characters."); } } return appId; }, }); }