Use custom user-agent for all requests in Node.js

src/downloader.js

@@ -228,7 +228,9 @@ const downloadScratch2 = async (projectData, zip, options) => {
   const fetchAndStoreAsset = async (md5ext, id) => {
     progressTarget.fetching(md5ext);
     // assetHost will never be undefined here because of parseOptions()
-    const arrayBuffer = await fetchAsArrayBuffer(options.assetHost.replace('$id', md5ext))
+    const arrayBuffer = await fetchAsArrayBuffer(options.assetHost.replace('$id', md5ext), {
+      headers: environment.headers
+    });
     const path = `${id}.${getExtension(md5ext)}`;
     progressTarget.fetched(md5ext);
     return {
@@ -407,7 +409,8 @@ const downloadScratch3 = async (projectData, zip, options) => {
 
     // assetHost will never be undefined here because of parseOptions()
     const buffer = await fetchAsArrayBuffer(options.assetHost.replace('$id', md5ext), {
-      signal: options.signal
+      signal: options.signal,
+      headers: environment.headers
     });
 
     progressTarget.fetched(md5ext);
@@ -674,7 +677,8 @@ export const getProjectMetadata = async (id, options) => {
   for (const url of urls) {
     try {
       const response = await fetch(url, {
-        signal: options.signal
+        signal: options.signal,
+        headers: environment.headers
       });
       if (response.status === 404) {
         throw new CanNotAccessProjectError(`${id} is unshared or does not exist`);

src/environment.js

@@ -3,7 +3,12 @@ const environment = {
    * Whether the module is able to directly talk to api.scratch.mit.edu or if a middleman
    * is required due to CORS.
    */
-  canAccessScratchAPI: false
+  canAccessScratchAPI: false,
+
+  /**
+   * Headers used when fetching remote APIs.
+   */
+  headers: {}
 };
 
 export default environment;

src/export-node.js

@@ -1,4 +1,7 @@
 import environment from './environment.js';
+import {name, version} from '../package.json';
+
 environment.canAccessScratchAPI = true;
+environment.headers['user-agent'] = `SBDL/${version} (+https://www.npmjs.com/package/${name})`;
 
 export * from './downloader.js';

src/fetch-with-progress.js

@@ -1,5 +1,6 @@
 import fetch from 'cross-fetch';
 import {AbortError, HTTPError} from './errors.js';
+import environment from './environment.js';
 
 /**
  * @param {stirng} url
@@ -47,9 +48,7 @@ const fetchAsArrayBufferWithProgress = async (url, progressCallback, abortSignal
 
   // Running in Node.js
   const response = await fetch(url, {
-    headers: {
-      'user-agent': 'SBDL/1.0 (+https://www.npmjs.com/package/@turbowarp/sbdl)'
-    },
+    headers: environment.headers
   });
   if (response.status !== 200) {
     throw new HTTPError(url, response.status);