From 37ecabfcca784466cc2f2501dc815c265930fec1 Mon Sep 17 00:00:00 2001
From: Phil Pluckthun <phil@kitten.sh>
Date: Tue, 19 May 2026 10:33:35 +0100
Subject: [PATCH 1/2] Add resolution check to `isExpoCommand` shared with
 `spawnExpoCommand`

---
 packages/eas-cli/src/project/projectUtils.ts | 19 +++++++++++++++++--
 packages/eas-cli/src/utils/expoCli.ts        |  9 +++++++--
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/packages/eas-cli/src/project/projectUtils.ts b/packages/eas-cli/src/project/projectUtils.ts
index 355b2aa1ec..4485be2e2c 100644
--- a/packages/eas-cli/src/project/projectUtils.ts
+++ b/packages/eas-cli/src/project/projectUtils.ts
@@ -10,7 +10,7 @@ import { ExpoGraphqlClient } from '../commandUtils/context/contextUtils/createGr
 import { AccountFragment } from '../graphql/generated';
 import { AppQuery } from '../graphql/queries/AppQuery';
 import Log, { learnMore } from '../log';
-import { expoCommandAsync } from '../utils/expoCli';
+import { expoCommandAsync, resolveExpoCli } from '../utils/expoCli';
 
 /**
  * Return a useful name describing the project config.
@@ -45,7 +45,22 @@ export function isExpoNotificationsInstalled(projectDir: string): boolean {
 
 export function isExpoInstalled(projectDir: string): boolean {
   const packageJson = getPackageJson(projectDir);
-  return !!(packageJson.dependencies && 'expo' in packageJson.dependencies);
+  if (!!(packageJson.dependencies && 'expo' in packageJson.dependencies)) {
+    // NOTE(@kitten): We usually don't apply strict checks for installed packages, but
+    // `isExpoInstalled` is often used to check if we should call the Expo CLI, so we're
+    // also checking if we can resolve `expo` here
+    try {
+      return !!resolveExpoCli(projectDir);
+    } catch (e: any) {
+      if (e.code === 'MODULE_NOT_FOUND') {
+        return false;
+      } else {
+        throw e;
+      }
+    }
+  } else {
+    return false;
+  }
 }
 
 export function isExpoUpdatesInstalledAsDevDependency(projectDir: string): boolean {
diff --git a/packages/eas-cli/src/utils/expoCli.ts b/packages/eas-cli/src/utils/expoCli.ts
index 9d006dcb22..7507455235 100644
--- a/packages/eas-cli/src/utils/expoCli.ts
+++ b/packages/eas-cli/src/utils/expoCli.ts
@@ -78,6 +78,12 @@ export const shouldUseVersionedExpoCLIWithExplicitPlatforms = memoize(
   shouldUseVersionedExpoCLIWithExplicitPlatformsExpensive
 );
 
+export function resolveExpoCli(projectDir: string): string {
+  return (
+    silentResolveFrom(projectDir, 'expo/bin/cli') ?? resolveFrom(projectDir, 'expo/bin/cli.js')
+  );
+}
+
 export function spawnExpoCommand(
   projectDir: string,
   args: string[],
@@ -85,8 +91,7 @@ export function spawnExpoCommand(
 ): spawnAsync.SpawnPromise<spawnAsync.SpawnResult> {
   let expoCliPath;
   try {
-    expoCliPath =
-      silentResolveFrom(projectDir, 'expo/bin/cli') ?? resolveFrom(projectDir, 'expo/bin/cli.js');
+    expoCliPath = resolveExpoCli(projectDir);
   } catch (e: any) {
     if (e.code === 'MODULE_NOT_FOUND') {
       throw new Error(

From dbaa3f8b408c71331e9d62672b67b4e917325c78 Mon Sep 17 00:00:00 2001
From: Phil Pluckthun <phil@kitten.sh>
Date: Tue, 19 May 2026 10:34:28 +0100
Subject: [PATCH 2/2] Add CHANGELOG entry

---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1bed610b90..2ebdd7767b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ This is the log of notable changes to EAS CLI and related packages.
 
 ### 🐛 Bug fixes
 
+- [eas-cli] Check that `expo` is resolvable before assuming it's installed ([#3748](https://github.com/expo/eas-cli/pull/3748) by [@kitten](https://github.com/kitten))
+
 ### 🧹 Chores
 
 ## [18.13.1](https://github.com/expo/eas-cli/releases/tag/v18.13.1) - 2026-05-18