feat: support download of native WebKit build for Apple M1 (#4648)

Author: aslushnikov

src/install/browserFetcher.ts

@@ -78,6 +78,7 @@ function getDownloadUrl(browserName: BrowserName, revision: number, platform: Br
         ['mac10.14', '%s/builds/chromium/%s/chromium-mac.zip'],
         ['mac10.15', '%s/builds/chromium/%s/chromium-mac.zip'],
         ['mac11.0', '%s/builds/chromium/%s/chromium-mac.zip'],
+        ['mac11.0-arm64', '%s/builds/chromium/%s/chromium-mac.zip'],
         ['win32', '%s/builds/chromium/%s/chromium-win32.zip'],
         ['win64', '%s/builds/chromium/%s/chromium-win64.zip'],
       ]).get(platform);
@@ -103,6 +104,7 @@ function getDownloadUrl(browserName: BrowserName, revision: number, platform: Br
         ['mac10.14', '%s/builds/firefox/%s/firefox-mac-10.14.zip'],
         ['mac10.15', '%s/builds/firefox/%s/firefox-mac-10.14.zip'],
         ['mac11.0', '%s/builds/firefox/%s/firefox-mac-10.14.zip'],
+        ['mac11.0-arm64', '%s/builds/firefox/%s/firefox-mac-10.14.zip'],
         ['win32', '%s/builds/firefox/%s/firefox-win32.zip'],
         ['win64', '%s/builds/firefox/%s/firefox-win64.zip'],
       ]).get(platform);
@@ -128,6 +130,7 @@ function getDownloadUrl(browserName: BrowserName, revision: number, platform: Br
         ['mac10.14', '%s/builds/webkit/%s/webkit-mac-10.14.zip'],
         ['mac10.15', '%s/builds/webkit/%s/webkit-mac-10.15.zip'],
         ['mac11.0', '%s/builds/webkit/%s/webkit-mac-10.15.zip'],
+        ['mac11.0-arm64', '%s/builds/webkit/%s/webkit-mac-11.0-arm64.zip'],
         ['win32', '%s/builds/webkit/%s/webkit-win64.zip'],
         ['win64', '%s/builds/webkit/%s/webkit-win64.zip'],
       ]).get(platform);

src/utils/browserPaths.ts

@@ -22,7 +22,7 @@ import { getUbuntuVersionSync } from './ubuntuVersion';
 import { getFromENV } from './utils';
 
 export type BrowserName = 'chromium'|'webkit'|'firefox'|'clank';
-export type BrowserPlatform = 'win32'|'win64'|'mac10.13'|'mac10.14'|'mac10.15'|'mac11.0'|'ubuntu18.04'|'ubuntu20.04';
+export type BrowserPlatform = 'win32'|'win64'|'mac10.13'|'mac10.14'|'mac10.15'|'mac11.0'|'mac11.0-arm64'|'ubuntu18.04'|'ubuntu20.04';
 export type BrowserDescriptor = {
   name: BrowserName,
   revision: string,
@@ -35,7 +35,8 @@ export const hostPlatform = ((): BrowserPlatform => {
     const macVersion = execSync('sw_vers -productVersion', {
       stdio: ['ignore', 'pipe', 'ignore']
     }).toString('utf8').trim().split('.').slice(0, 2).join('.');
-    return `mac${macVersion}` as BrowserPlatform;
+    const archSuffix = os.arch() === 'arm64' ? '-arm64' : '';
+    return `mac${macVersion}${archSuffix}` as BrowserPlatform;
   }
   if (platform === 'linux') {
     const ubuntuVersion = getUbuntuVersionSync();