chore: resolve Firefox revisions for the latest keyword (#9708)

packages/browsers/src/CLI.ts

@@ -18,6 +18,7 @@ import ProgressBar from 'progress';
 import yargs from 'yargs';
 import {hideBin} from 'yargs/helpers';
 
+import {resolveRevision} from './browsers/browsers.js';
 import {Browser, BrowserPlatform} from './browsers/types.js';
 import {fetch} from './fetch.js';
 import {computeExecutablePath, launch} from './launcher.js';
@@ -67,6 +68,10 @@ export class CLI {
         },
         async argv => {
           const args = argv as unknown as InstallArgs;
+          args.browser.revision = await resolveRevision(
+            args.browser.name,
+            args.browser.revision
+          );
           await fetch({
             browser: args.browser.name,
             revision: args.browser.revision,
@@ -77,6 +82,9 @@ export class CLI {
               args.browser.revision
             ),
           });
+          console.log(
+            `${args.browser.name}@${args.browser.revision} downloaded successfully.`
+          );
         }
       )
       .option('path', {

packages/browsers/src/browsers/browsers.ts

@@ -16,7 +16,7 @@
 
 import * as chrome from './chrome.js';
 import * as firefox from './firefox.js';
-import {Browser, BrowserPlatform} from './types.js';
+import {Browser, BrowserPlatform, BrowserTag} from './types.js';
 
 export const downloadUrls = {
   [Browser.CHROME]: chrome.resolveDownloadUrl,
@@ -29,3 +29,18 @@ export const executablePathByBrowser = {
 };
 
 export {Browser, BrowserPlatform};
+
+export async function resolveRevision(
+  browser: Browser,
+  tag: string
+): Promise<string> {
+  switch (browser) {
+    case Browser.FIREFOX:
+      switch (tag as BrowserTag) {
+        case BrowserTag.LATEST:
+          return await firefox.resolveRevision('FIREFOX_NIGHTLY');
+      }
+  }
+  // We assume the tag is the revision if it didn't match any keywords.
+  return tag;
+}

packages/browsers/src/browsers/firefox.ts

@@ -16,6 +16,8 @@
 
 import path from 'path';
 
+import {httpRequest} from '../httpUtil.js';
+
 import {BrowserPlatform} from './types.js';
 
 function archive(platform: BrowserPlatform, revision: string): string {
@@ -54,3 +56,35 @@ export function relativeExecutablePath(
       return path.join('firefox', 'firefox.exe');
   }
 }
+
+export async function resolveRevision(
+  channel: 'FIREFOX_NIGHTLY' = 'FIREFOX_NIGHTLY'
+): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const request = httpRequest(
+      new URL('https://product-details.mozilla.org/1.0/firefox_versions.json'),
+      'GET',
+      response => {
+        let data = '';
+        if (response.statusCode && response.statusCode >= 400) {
+          return reject(new Error(`Got status code ${response.statusCode}`));
+        }
+        response.on('data', chunk => {
+          data += chunk;
+        });
+        response.on('end', () => {
+          try {
+            const versions = JSON.parse(data);
+            return resolve(versions[channel]);
+          } catch {
+            return reject(new Error('Firefox version not found'));
+          }
+        });
+      },
+      false
+    );
+    request.on('error', err => {
+      reject(err);
+    });
+  });
+}

packages/browsers/src/browsers/types.ts

@@ -41,3 +41,7 @@ export const downloadUrls = {
   [Browser.CHROME]: chrome.resolveDownloadUrl,
   [Browser.FIREFOX]: firefox.resolveDownloadUrl,
 };
+
+export enum BrowserTag {
+  LATEST = 'latest',
+}

packages/browsers/test/src/cli.spec.ts

@@ -22,7 +22,7 @@ import path from 'path';
 import {CLI} from '../../lib/cjs/CLI.js';
 
 describe('CLI', function () {
-  this.timeout(60000);
+  this.timeout(90000);
 
   let tmpDir = '/tmp/puppeteer-browsers-test';
   const testChromeRevision = '1083080';
@@ -72,4 +72,15 @@ describe('CLI', function () {
       )
     );
   });
+
+  it('should download latest Firefox binaries', async () => {
+    await new CLI(tmpDir).run([
+      'npx',
+      '@puppeteer/browsers',
+      'install',
+      `firefox@latest`,
+      `--path=${tmpDir}`,
+      '--platform=linux',
+    ]);
+  });
 });