[eas-cli] cache downloaded app archives in eas build:dev (#2864)

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# Why

We don't need to redownload app every single time in `eas build:dev`. We can cache it locally. This functionality already exists for `eas build:run`.

# How

Use caching the same way we do for `eas build:run`

# Test Plan

Tested manually

packages/eas-cli/src/build/runBuildAndSubmit.ts

@@ -11,6 +11,7 @@ import {
 import { LoggerLevel } from '@expo/logger';
 import assert from 'assert';
 import chalk from 'chalk';
+import { pathExists } from 'fs-extra';
 import nullthrows from 'nullthrows';
 
 import { prepareAndroidBuildAsync } from './android/build';
@@ -62,7 +63,7 @@ import {
   validateBuildProfileVersionSettingsAsync,
 } from '../project/remoteVersionSource';
 import { confirmAsync } from '../prompts';
-import { runAsync } from '../run/run';
+import { getEasBuildRunCachedAppPath, runAsync } from '../run/run';
 import { isRunnableOnSimulatorOrEmulator } from '../run/utils';
 import { createSubmissionContextAsync } from '../submit/context';
 import {
@@ -545,11 +546,21 @@ function exitWithNonZeroCodeIfSomeBuildsFailed(maybeBuilds: (BuildFragment | nul
   }
 }
 
-async function downloadAndRunAsync(build: BuildFragment): Promise<void> {
+export async function downloadAndRunAsync(build: BuildFragment): Promise<void> {
   assert(build.artifacts?.applicationArchiveUrl);
+  const cachedAppPath = getEasBuildRunCachedAppPath(build.project.id, build.id, build.platform);
+
+  if (await pathExists(cachedAppPath)) {
+    Log.newLine();
+    Log.log(`Using cached app...`);
+    await runAsync(cachedAppPath, build.platform);
+    return;
+  }
+
   const buildPath = await downloadAndMaybeExtractAppAsync(
     build.artifacts.applicationArchiveUrl,
-    build.platform
+    build.platform,
+    cachedAppPath
   );
   await runAsync(buildPath, build.platform);
 }

packages/eas-cli/src/commands/build/dev.ts

@@ -8,7 +8,7 @@ import {
   ensureProjectConfiguredAsync,
 } from '../../build/configure';
 import { evaluateConfigWithEnvVarsAsync } from '../../build/evaluateConfigWithEnvVarsAsync';
-import { runBuildAndSubmitAsync } from '../../build/runBuildAndSubmit';
+import { downloadAndRunAsync, runBuildAndSubmitAsync } from '../../build/runBuildAndSubmit';
 import { ensureRepoIsCleanAsync } from '../../build/utils/repository';
 import EasCommand from '../../commandUtils/EasCommand';
 import { ExpoGraphqlClient } from '../../commandUtils/context/contextUtils/createGraphqlClient';
@@ -19,8 +19,6 @@ import Log from '../../log';
 import { RequestedPlatform } from '../../platform';
 import { resolveWorkflowAsync } from '../../project/workflow';
 import { confirmAsync, promptAsync } from '../../prompts';
-import { runAsync } from '../../run/run';
-import { downloadAndMaybeExtractAppAsync } from '../../utils/download';
 import { createFingerprintAsync } from '../../utils/fingerprintCli';
 import { ProfileData, getProfilesAsync } from '../../utils/profiles';
 import { Client } from '../../vcs/vcs';
@@ -123,11 +121,7 @@ export default class BuildDev extends EasCommand {
       );
 
       if (build.artifacts?.applicationArchiveUrl) {
-        const buildPath = await downloadAndMaybeExtractAppAsync(
-          build.artifacts.applicationArchiveUrl,
-          build.platform
-        );
-        await runAsync(buildPath, build.platform);
+        await downloadAndRunAsync(build);
         return;
       } else {
         Log.warn('Artifacts for this build expired. New build will be started.');

packages/eas-cli/src/commands/build/run.ts

@@ -1,7 +1,6 @@
 import { Errors, Flags } from '@oclif/core';
 import assert from 'assert';
 import { pathExists } from 'fs-extra';
-import path from 'path';
 
 import { getLatestBuildAsync, listAndSelectBuildOnAppAsync } from '../../build/queries';
 import EasCommand from '../../commandUtils/EasCommand';
@@ -17,13 +16,12 @@ import Log from '../../log';
 import { appPlatformDisplayNames } from '../../platform';
 import { getDisplayNameForProjectIdAsync } from '../../project/projectUtils';
 import { promptAsync } from '../../prompts';
-import { RunArchiveFlags, runAsync } from '../../run/run';
+import { RunArchiveFlags, getEasBuildRunCachedAppPath, runAsync } from '../../run/run';
 import { isRunnableOnSimulatorOrEmulator } from '../../run/utils';
 import {
   downloadAndMaybeExtractAppAsync,
   extractAppFromLocalArchiveAsync,
 } from '../../utils/download';
-import { getEasBuildRunCacheDirectoryPath } from '../../utils/paths';
 
 interface RawRunFlags {
   latest?: boolean;
@@ -245,17 +243,6 @@ async function maybeGetBuildAsync(
   }
 }
 
-function getEasBuildRunCachedAppPath(
-  projectId: string,
-  buildId: string,
-  platform: AppPlatform
-): string {
-  return path.join(
-    getEasBuildRunCacheDirectoryPath(),
-    `${projectId}_${buildId}.${platform === AppPlatform.Ios ? 'app' : 'apk'}`
-  );
-}
-
 async function getPathToSimulatorBuildAppAsync(
   graphqlClient: ExpoGraphqlClient,
   projectId: string,

packages/eas-cli/src/run/run.ts

@@ -1,6 +1,9 @@
+import path from 'path';
+
 import { runAppOnAndroidEmulatorAsync } from './android/run';
 import { runAppOnIosSimulatorAsync } from './ios/run';
 import { AppPlatform } from '../graphql/generated';
+import { getEasBuildRunCacheDirectoryPath } from '../utils/paths';
 
 export interface RunArchiveFlags {
   latest?: boolean;
@@ -19,3 +22,14 @@ export async function runAsync(
     await runAppOnAndroidEmulatorAsync(simulatorBuildPath);
   }
 }
+
+export function getEasBuildRunCachedAppPath(
+  projectId: string,
+  buildId: string,
+  platform: AppPlatform
+): string {
+  return path.join(
+    getEasBuildRunCacheDirectoryPath(),
+    `${projectId}_${buildId}.${platform === AppPlatform.Ios ? 'app' : 'apk'}`
+  );
+}