fix(call): add user agent based on package version

package.json

@@ -30,6 +30,7 @@
  ],
  "scripts": {
  "dev": "esrun --watch src/__playground.ts",
+ "prebuild": "node src/set-version.js",
  "build": "microbundle",
  "prepare": "microbundle",
  "format": "prettier --write . '**/*.{json,md,js,ts,tsx}'",

src/set-version.js

@@ -0,0 +1,6 @@
+import packageJson from "../package.json" assert { type: "json" };
+
+const { version } = packageJson;
+
+process.env.PACKAGE_VERSION = version;
+console.log(`ℹ️ Set User-Agent header version variable to ${version}`);

src/utils/internal/call.ts

@@ -1,3 +1,5 @@
+const packageVersion = process.env?.["PACKAGE_VERSION"] ?? "Unknown";
+
 /**
  * Fetch an HTTP resource. This is publicly exposed in the
  * event you would like to access an endpoint that this
@@ -13,7 +15,11 @@ export const call = async <
 }) => {
  const { url } = config;
 
- const rawResponse = await fetch(url);
+ const headers = new Headers({
+ "User-Agent": `RetroAchievements-api-js/${packageVersion}`
+ });
+
+ const rawResponse = await fetch(url, { headers });
 
  if (!rawResponse.ok) {
  throw new Error(