fix: determine sdk version from package.json if dependencies not installed

packages/eas-cli/src/project/expoSdk.ts

@@ -6,6 +6,7 @@ import semver from 'semver';
 import { BuildContext } from '../build/context';
 import Log from '../log';
 import { confirmAsync } from '../prompts';
+import { getConfiguredExpoSdkVersion } from './projectUtils';
 
 const SUPPORTED_EXPO_SDK_VERSIONS = '>= 41.0.0';
 assert(semver.validRange(SUPPORTED_EXPO_SDK_VERSIONS), 'Must be a valid version range');
@@ -15,6 +16,10 @@ export async function checkExpoSdkIsSupportedAsync(ctx: BuildContext<Platform>):
 
   if (ctx.exp.sdkVersion && semver.satisfies(ctx.exp.sdkVersion, SUPPORTED_EXPO_SDK_VERSIONS)) {
     return;
+  } else if (
+    semver.subset(getConfiguredExpoSdkVersion(ctx.projectDir), SUPPORTED_EXPO_SDK_VERSIONS)
+  ) {
+    return;
   }
 
   const unsupportedSdkMessage =

packages/eas-cli/src/project/projectUtils.ts

@@ -211,6 +211,15 @@ export async function promptToCreateProjectIfNotExistsAsync(
   });
 }
 
+export function getConfiguredExpoSdkVersion(projectDir: string): string {
+  const packageJson = getPackageJson(projectDir);
+  if (packageJson.dependencies && packageJson.dependencies['expo']) {
+    return packageJson.dependencies['expo'];
+  }
+
+  return '0';
+}
+
 export function isExpoUpdatesInstalled(projectDir: string): boolean {
   const packageJson = getPackageJson(projectDir);
   return !!(packageJson.dependencies && 'expo-updates' in packageJson.dependencies);