Add support for arm64-v8a for Apple Silicon Macs

Fixes https://github.com/ReactiveCircus/android-emulator-runner/issues/145

README.md

@@ -8,7 +8,7 @@ A GitHub Action for installing, configuring and running hardware-accelerated And
 
 The old ARM-based emulators were slow and are no longer supported by Google. The modern Intel Atom (x86 and x86_64) emulators require hardware acceleration (HAXM on Mac & Windows, QEMU on Linux) from the host to run fast. This presents a challenge on CI as to be able to run hardware accelerated emulators within a docker container, **KVM** must be supported by the host VM which isn't the case for cloud-based CI providers due to infrastructural limits. If you want to learn more about this, here's an article I wrote: [Running Android Instrumented Tests on CI](https://dev.to/ychescale9/running-android-emulators-on-ci-from-bitrise-io-to-github-actions-3j76).
 
-The **macOS** VM provided by **GitHub Actions** has **HAXM** installed so we are able to create a new AVD instance, launch an emulator with hardware acceleration, and run our Android 
+The **macOS** VM provided by **GitHub Actions** has **HAXM** installed so we are able to create a new AVD instance, launch an emulator with hardware acceleration, and run our Android
 tests directly on the VM.
 
 This action automates the process by doing the following:
@@ -90,7 +90,7 @@ jobs:
 |-|-|-|-|
 | `api-level` | Required | N/A | API level of the platform system image - e.g. 23 for Android Marshmallow, 29 for Android 10. **Minimum API level supported is 15**. |
 | `target` | Optional | `default` | Target of the system image - `default`, `google_apis` or `playstore`. |
-| `arch` | Optional | `x86` | CPU architecture of the system image - `x86` or `x86_64`. Note that `x86_64` image is only available for API 21+. |
+| `arch` | Optional | `x86` | CPU architecture of the system image - `x86`, `x86_64` or `arm64-v8a`. Note that `x86_64` image is only available for API 21+. `arm64-v8a` images require Android 4.2+ and are limited to fewer API levels (e.g. 30). |
 | `profile` | Optional | N/A | Hardware profile used for creating the AVD - e.g. `Nexus 6`. For a list of all profiles available, run `avdmanager list` and refer to the results under "Available Android Virtual Devices". |
 | `cores` | Optional | 2 | Number of cores to use for the emulator (`hw.cpu.ncore` in config.ini). |
 | `sdcard-path-or-size` | Optional | N/A | Path to the SD card image for this AVD or the size of a new SD card image to create for this AVD, in KB or MB, denoted with K or M. - e.g. `path/to/sdcard`, or `1000M`. |

action.yml

@@ -2,7 +2,7 @@ name: 'Android Emulator Runner'
 description: 'Installs, configures and starts an Android Emulator directly on macOS virtual machines.'
 author: 'Reactive Circus'
 branding:
-  icon: 'smartphone'  
+  icon: 'smartphone'
   color: 'green'
 inputs:
   api-level:
@@ -12,7 +12,7 @@ inputs:
     description: 'target of the system image - default, google_apis or playstore'
     default: 'default'
   arch:
-    description: 'CPU architecture of the system image - x86 or x86_64'
+    description: 'CPU architecture of the system image - x86, x86_64 or arm64-v8a'
     default: 'x86'
   profile:
     description: 'hardware profile used for creating the AVD - e.g. `Nexus 6`'
@@ -30,7 +30,7 @@ inputs:
   disable-animations:
     description: 'whether to disable animations - true or false'
     default: 'true'
-  disable-spellchecker: 
+  disable-spellchecker:
     description: Whether to disable spellchecker - `true` or `false`.
     default: 'false'
   emulator-build:

lib/input-validator.js

@@ -3,7 +3,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 exports.checkEmulatorBuild = exports.checkDisableSpellchecker = exports.checkDisableAnimations = exports.checkArch = exports.checkTarget = exports.checkApiLevel = exports.VALID_ARCHS = exports.VALID_TARGETS = exports.MIN_API_LEVEL = void 0;
 exports.MIN_API_LEVEL = 15;
 exports.VALID_TARGETS = ['default', 'google_apis', 'google_apis_playstore'];
-exports.VALID_ARCHS = ['x86', 'x86_64'];
+exports.VALID_ARCHS = ['x86', 'x86_64', 'arm64-v8a'];
 function checkApiLevel(apiLevel) {
     if (isNaN(Number(apiLevel)) || !Number.isInteger(Number(apiLevel))) {
         throw new Error(`Unexpected API level: '${apiLevel}'.`);

src/input-validator.ts

@@ -1,6 +1,6 @@
 export const MIN_API_LEVEL = 15;
 export const VALID_TARGETS: Array<string> = ['default', 'google_apis', 'google_apis_playstore'];
-export const VALID_ARCHS: Array<string> = ['x86', 'x86_64'];
+export const VALID_ARCHS: Array<string> = ['x86', 'x86_64', 'arm64-v8a'];
 
 export function checkApiLevel(apiLevel: string): void {
   if (isNaN(Number(apiLevel)) || !Number.isInteger(Number(apiLevel))) {