Use Mac arm64 EdgeDriver when available (#716)

Author: ianrenauld

lib/compute-download-urls.js

@@ -101,7 +101,7 @@ async function computeDownloadUrls(opts) {
         urls.chromiumedge,
         opts.drivers.chromiumedge.baseURL,
         opts.drivers.chromiumedge.version,
-        getChromiumEdgeDriverArchitecture(opts.drivers.chromiumedge.arch)
+        getChromiumEdgeDriverArchitecture(opts.drivers.chromiumedge.arch, opts.drivers.chromiumedge.version)
       );
   }
 
@@ -182,13 +182,18 @@ function getEdgeDriverUrl(version) {
   return release.url;
 }
 
-function getChromiumEdgeDriverArchitecture(wantedArchitecture) {
+function getChromiumEdgeDriverArchitecture(wantedArchitecture, version) {
   let platform;
 
   if (process.platform === 'linux') {
     platform = 'linux64';
   } else if (process.platform === 'darwin') {
-    platform = 'mac64';
+    if (process.arch === 'arm64') {
+      const [major] = version.split('.');
+      platform = parseInt(major, 10) > 104 ? 'mac64_m1' : 'mac64';
+    } else {
+      platform = 'mac64';
+    }
   } else if (wantedArchitecture === 'x32') {
     platform = 'win32';
   } else {

test/compute-download-urls-test.js

@@ -544,6 +544,28 @@ describe('compute-download-urls', () => {
         const actual = await computeDownloadUrls(opts);
         assert.strictEqual(actual.chromiumedge, 'https://localhost/86.0.600.0/edgedriver_mac64.zip');
       });
+
+      it('Use `mac64` on arm64 before Edge 105', async () => {
+        opts.drivers.chromiumedge = {
+          baseURL: 'https://localhost',
+          version: '104.0.1293.70',
+          arch: 'arm64',
+        };
+
+        const actual = await computeDownloadUrls(opts);
+        assert.strictEqual(actual.chromiumedge, 'https://localhost/104.0.1293.70/edgedriver_mac64.zip');
+      });
+
+      it('Use `mac64_m1` on arm64 starting from Edge 105', async () => {
+        opts.drivers.chromiumedge = {
+          baseURL: 'https://localhost',
+          version: '105.0.1343.34',
+          arch: 'arm64',
+        };
+
+        const actual = await computeDownloadUrls(opts);
+        assert.strictEqual(actual.chromiumedge, 'https://localhost/105.0.1343.34/edgedriver_mac64_m1.zip');
+      });
     });
 
     describe('win', () => {