Consolidate versions and AWS configuration in a single file

[talha-sofyrus]

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Project	Deployment	Actions	Updated (UTC)
docs	Error	Open in v0	Jul 17, 2026 1:22pm

[gemini-code-assist]

Code Review

This pull request replaces hardcoded download URLs and version numbers in the installation documentation with dynamic placeholders loaded from a new download-config.json file. In lib/markdown.ts, logic was added to read this configuration, cache it, and replace placeholders in the MDX content. The feedback suggests caching the configuration promise instead of the resolved object to prevent concurrent file reads during simultaneous requests, and replacing the in operator check with a safer type check to avoid matching built-in prototype properties.

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[gemini-code-assist]

When multiple documentation pages are requested concurrently, loadDownloadConfig can trigger multiple concurrent fs.readFile operations because cachedConfig is only assigned after the file read and JSON parsing complete. Caching the promise instead of the resolved configuration object avoids this race condition and ensures the file is read at most once.

let cachedConfigPromise: Promise<Record<string, string>> | null = null;

function loadDownloadConfig(): Promise<Record<string, string>> {
  if (!cachedConfigPromise) {
    cachedConfigPromise = (async () => {
      try {
        const configPath = path.join(process.cwd(), "download-config.json");
        const content = await fs.readFile(configPath, "utf-8");
        return JSON.parse(content) || {};
      } catch (err) {
        console.error("Failed to load download-config.json", err);
        return {};
      }
    })();
  }
  return cachedConfigPromise;
}

[gemini-code-assist]

Using the in operator (trimmedKey in config) checks the entire prototype chain of the object. If a placeholder matches a built-in property name (such as toString, valueOf, or constructor), it will evaluate to true and attempt to replace the placeholder with a function or prototype property, leading to unexpected output or runtime errors. Checking typeof config[trimmedKey] === "string" is safer and ensures only explicitly defined string properties from the JSON configuration are replaced.

Suggested change

	function replacePlaceholders(content: string, config: Record<string, string>): string {
	return content.replace(/\{\{([^}]+)\}\}/g, (match, key) => {
	const trimmedKey = key.trim();
	return trimmedKey in config ? config[trimmedKey] : match;
	});
	}
	function replacePlaceholders(content: string, config: Record<string, string>): string {
	return content.replace(/\{\{([^}]+)\}\}/g, (match, key) => {
	const trimmedKey = key.trim();
	return typeof config[trimmedKey] === "string" ? config[trimmedKey] : match;
	});
	}