code · pull · Apr 3, 2026 · Apr 3, 2026 · Apr 3, 2026
diff --git a/apps/test-suite/tests/FileSystem.ts b/apps/test-suite/tests/FileSystem.ts
@@ -1539,13 +1539,14 @@ export async function test({ describe, expect, it, ...t }) {
       });
 
       it('can cancel a download with AbortSignal', async () => {
-        // Use a large file to ensure we have time to cancel
-        const url = 'https://httpbingo.org/bytes/5242880';
+        // Use a slow-streaming endpoint to ensure the download is still in-flight when we cancel.
+        // Note: httpbingo.org/bytes has a 524288 byte limit and returns 400 for larger values.
+        const url = 'https://httpbingo.org/drip?numbytes=51200&duration=5&delay=0';
         const file = new File(testDirectory, 'cancel_test.bin');
         const controller = new AbortController();
 
-        // Cancel after a short delay
-        setTimeout(() => controller.abort(), 50);
+        // Cancel after a short delay — the /drip endpoint streams over 5s so this is safe.
+        setTimeout(() => controller.abort(), 100);
 
         let error: any;
         try {
@@ -1582,7 +1583,8 @@ export async function test({ describe, expect, it, ...t }) {
       });
 
       it('can use onProgress and signal together', async () => {
-        const url = 'https://httpbingo.org/bytes/524288';
+        // /drip streams data over 5s, so progress events fire before the download completes.
+        const url = 'https://httpbingo.org/drip?numbytes=51200&duration=5&delay=0';
         const file = new File(testDirectory, 'progress_and_cancel.bin');
         const controller = new AbortController();
         const progressUpdates: { bytesWritten: number; totalBytes: number }[] = [];

diff --git a/packages/@expo/cli/bin/cli.ts b/packages/@expo/cli/bin/cli.ts
@@ -12,9 +12,9 @@ installEventLogger();
 
 // Check Node.js version and issue a loud warning if it's too outdated
 // This is sent to stderr (console.error) so it doesn't interfere with programmatic commands
-const NODE_MIN = [20, 19, 4];
+const NODE_MIN = [20, 19, 4] as const;
 const nodeVersion = process.version?.slice(1).split('.', 3).map(Number);
-if (nodeVersion[0] < NODE_MIN[0] || (nodeVersion[0] === NODE_MIN[0] && nodeVersion[1] < NODE_MIN[1])) {
+if (nodeVersion[0]! < NODE_MIN[0] || (nodeVersion[0] === NODE_MIN[0] && nodeVersion[1]! < NODE_MIN[1])) {
   console.error(
     chalk.red`{bold Node.js (${process.version}) is outdated and unsupported.}`
       + chalk.red` Please update to a newer Node.js LTS version (required: >=${NODE_MIN.join('.')})\n`
@@ -90,7 +90,7 @@ if (args['--non-interactive']) {
 }
 
 // Check if we are running `npx expo <subcommand>` or `npx expo`
-const isSubcommand = Boolean(commands[args._[0]]);
+const isSubcommand = !!(args._[0] && commands[args._[0]]);
 
 // Handle `--help` flag
 if (!isSubcommand && args['--help']) {
@@ -191,7 +191,7 @@ if (!isSubcommand) {
 
   // TODO: Log telemetry about invalid command used.
   const subcommand = args._[0];
-  if (subcommand in migrationMap) {
+  if (subcommand && subcommand in migrationMap) {
     const replacement = migrationMap[subcommand];
     console.log();
     const instruction = subcommand === 'upgrade' ? 'follow this guide' : 'use';
@@ -202,15 +202,15 @@ if (!isSubcommand) {
     process.exit(1);
   }
   const deprecated = ['send', 'client:ios'];
-  if (deprecated.includes(subcommand)) {
+  if (subcommand && deprecated.includes(subcommand)) {
     console.log();
     console.log(chalk.yellow`  {gray $} {bold expo ${subcommand}} is deprecated`);
     console.log();
     process.exit(1);
   }
 }
 
-const command = isSubcommand ? args._[0] : defaultCmd;
+const command = isSubcommand ? args._[0]! : defaultCmd;
 const commandArgs = isSubcommand ? args._.slice(1) : args._;
 
 // Push the help flag to the subcommand args.
@@ -222,7 +222,7 @@ if (args['--help']) {
 process.on('SIGINT', () => process.exit(0));
 process.on('SIGTERM', () => process.exit(0));
 
-commands[command]().then((exec) => {
+commands[command]!().then((exec) => {
   exec(commandArgs);
 
   // NOTE(EvanBacon): Track some basic telemetry events indicating the command

diff --git a/packages/@expo/cli/e2e/__tests__/export-dom-test.ts b/packages/@expo/cli/e2e/__tests__/export-dom-test.ts
@@ -62,12 +62,12 @@ describe('Export DOM Components', () => {
     const nativeBundlePath = globSync('**/*.{hbc,js}', {
       cwd: path.join(outputDir, '_expo/static/js/ios'),
       absolute: true,
-    })[0];
+    })[0]!;
     const domEntry = await fs.readFile(
       globSync('www.bundle/**/*.html', {
         cwd: outputDir,
         absolute: true,
-      })[0],
+      })[0]!,
       'utf8'
     );
     const md5HtmlBundle = crypto.createHash('md5').update(domEntry).digest('hex');
@@ -79,7 +79,7 @@ describe('Export DOM Components', () => {
       globSync('www.bundle/**/*.js', {
         cwd: outputDir,
         absolute: true,
-      })[0],
+      })[0]!,
       'utf8'
     );
     const md5DomJsBundle = crypto.createHash('md5').update(domJsBundleContent).digest('hex');

diff --git a/packages/@expo/cli/e2e/__tests__/export.test.ts b/packages/@expo/cli/e2e/__tests__/export.test.ts
@@ -306,7 +306,7 @@ describe('server', () => {
     const bundlePath = globSync('**/*.js', {
       cwd: path.join(outputDir, '_expo'),
       absolute: true,
-    })[0];
+    })[0]!;
 
     const bundle = await fs.readFile(bundlePath, 'utf8');
 

diff --git a/packages/@expo/cli/e2e/__tests__/export/base-path.test.ts b/packages/@expo/cli/e2e/__tests__/export/base-path.test.ts
@@ -57,8 +57,8 @@ describe('static-rendering with a custom base path', () => {
 
     const jsFiles = indexHtml
       .querySelectorAll('script')
-      .filter((script) => !!script.attributes.src)
-      .map((script) => script.attributes.src);
+      .map((script) => script.attributes.src)
+      .filter((src): src is string => !!src);
     expect(jsFiles).toEqual([
       expect.stringMatching(/\/one\/two\/_expo\/static\/js\/web\/entry-.*\.js/),
     ]);
@@ -68,7 +68,9 @@ describe('static-rendering with a custom base path', () => {
       return link.attributes.as !== 'font';
     });
 
-    const cssFiles = links.map((link) => link.attributes.href);
+    const cssFiles = links
+      .map((link) => link.attributes.href)
+      .filter((link): link is string => !!link);
 
     cssFiles.forEach((src) => {
       // Linked to the expected static location

diff --git a/packages/@expo/cli/e2e/__tests__/export/no-bytecode.test.ts b/packages/@expo/cli/e2e/__tests__/export/no-bytecode.test.ts
@@ -59,7 +59,7 @@ describe('exports for hermes with no bytecode', () => {
     const bundlePath = globSync('**/*.js', {
       cwd: path.join(outputDir, '_expo'),
       absolute: true,
-    })[0];
+    })[0]!;
 
     const bundle = await fs.promises.readFile(bundlePath, 'utf8');
     // Minified mark
@@ -116,7 +116,7 @@ describe('exports for hermes with no bytecode and no minification', () => {
     const bundlePath = globSync('**/*.js', {
       cwd: path.join(outputDir, '_expo'),
       absolute: true,
-    })[0];
+    })[0]!;
 
     const bundle = await fs.promises.readFile(bundlePath, 'utf8');
     // Unminified mark

diff --git a/packages/@expo/cli/e2e/__tests__/export/serializer-plugins.test.ts b/packages/@expo/cli/e2e/__tests__/export/serializer-plugins.test.ts
@@ -72,7 +72,7 @@ describe('exports with serializer plugins', () => {
     expect(files).not.toEqual([]);
 
     // Load the sourcemap and parse it as JSON
-    const rawmap = await JsonFile.readAsync(path.resolve(outputDir, files[0]));
+    const rawmap = await JsonFile.readAsync(path.resolve(outputDir, files[0] ?? ''));
     const sourcemap = rawmap as unknown as BasicSourceMap;
 
     // Ensure the sourcemap does not contain absolute paths to the project directory

diff --git a/packages/@expo/cli/e2e/__tests__/export/server-rendering.test.ts b/packages/@expo/cli/e2e/__tests__/export/server-rendering.test.ts
@@ -200,7 +200,7 @@ describe('exports server', () => {
         .filter((script) => !!script.attributes.src)
         .forEach((script) => {
           const jsBundle = fs.readFileSync(
-            path.join(server.outputDir, 'client', script.attributes.src),
+            path.join(server.outputDir, 'client', script.attributes.src ?? ''),
             'utf8'
           );
 
@@ -276,15 +276,15 @@ describe('exports server', () => {
       if (globalPreload) {
         expect(
           fs.readFileSync(
-            path.join(server.outputDir, 'client', globalPreload.attributes.href),
+            path.join(server.outputDir, 'client', globalPreload.attributes.href ?? ''),
             'utf-8'
           )
         ).toMatchInlineSnapshot(`"div{background:#0ff}"`);
       }
 
       // CSS Module
       expect(
-        fs.readFileSync(path.join(server.outputDir, 'client', links[2].attributes.href), 'utf-8')
+        fs.readFileSync(path.join(server.outputDir, 'client', links[2]?.attributes.href ?? ''), 'utf-8')
       ).toMatchInlineSnapshot(`".HPV33q_text{color:#1e90ff}"`);
 
       const styledHtml = getHtml(await server.fetchAsync('/styled').then((res) => res.text()));
@@ -300,17 +300,17 @@ describe('exports server', () => {
 
       const links = indexHtml.querySelectorAll('html > head > link[as="font"]');
       expect(links.length).toBe(1);
-      expect(links[0].attributes.href).toBe(
+      expect(links[0]?.attributes.href).toBe(
         '/assets/__e2e__/static-rendering/sweet.7c9263d3cffcda46ff7a4d9c00472c07.ttf'
       );
 
-      expect(links[0].toString()).toMatch(
+      expect(links[0]?.toString()).toMatch(
         /<link rel="preload" href="\/assets\/__e2e__\/static-rendering\/sweet\.[a-zA-Z0-9]{32}\.ttf" as="font" crossorigin="" >/
       );
 
       expect(
         fs.readFileSync(
-          path.join(server.outputDir, 'client', links[0].attributes.href.replace(/\?.*$/, '')),
+          path.join(server.outputDir, 'client', links[0]?.attributes.href?.replace(/\?.*$/, '') ?? ''),
           'utf-8'
         )
       ).toBeDefined();

diff --git a/packages/@expo/cli/e2e/__tests__/export/single-page-app.test.ts b/packages/@expo/cli/e2e/__tests__/export/single-page-app.test.ts
@@ -83,7 +83,7 @@ describe('exports with single-page', () => {
       .querySelectorAll('script')
       .filter((script) => script.attributes.src)
       .forEach((script) => {
-        const jsBundle = fs.readFileSync(path.join(outputDir, script.attributes.src), 'utf8');
+        const jsBundle = fs.readFileSync(path.join(outputDir, script.attributes.src ?? ''), 'utf8');
 
         // Ensure the bundle is valid
         expect(jsBundle).toMatch('__BUNDLE_START_TIME__');
@@ -136,15 +136,15 @@ describe('exports with single-page', () => {
     expect(globalPreload).toBeDefined();
     if (globalPreload) {
       expect(
-        fs.readFileSync(path.join(outputDir, globalPreload.attributes.href), 'utf-8')
+        fs.readFileSync(path.join(outputDir, globalPreload.attributes.href ?? ''), 'utf-8')
       ).toMatchInlineSnapshot(`"div{background:#0ff}"`);
     }
 
     const testPreload = links.find((l) => /test\.module-.*\.css/.test(l.attributes.href!));
     expect(testPreload).toBeDefined();
     if (testPreload) {
       expect(
-        fs.readFileSync(path.join(outputDir, testPreload.attributes.href), 'utf-8')
+        fs.readFileSync(path.join(outputDir, testPreload.attributes.href ?? ''), 'utf-8')
       ).toMatchInlineSnapshot(`".HPV33q_text{color:#1e90ff}"`);
     }
   });

diff --git a/packages/@expo/cli/e2e/__tests__/export/static-rendering.test.ts b/packages/@expo/cli/e2e/__tests__/export/static-rendering.test.ts
@@ -161,7 +161,7 @@ describe('exports static', () => {
       .querySelectorAll('script')
       .filter((script) => !!script.attributes.src)
       .forEach((script) => {
-        const jsBundle = fs.readFileSync(path.join(outputDir, script.attributes.src), 'utf8');
+        const jsBundle = fs.readFileSync(path.join(outputDir, script.attributes.src ?? ''), 'utf8');
 
         // Ensure the bundle is valid
         expect(jsBundle).toMatch('__BUNDLE_START_TIME__');
@@ -227,13 +227,13 @@ describe('exports static', () => {
     expect(globalPreload).toBeDefined();
     if (globalPreload) {
       expect(
-        fs.readFileSync(path.join(outputDir, globalPreload.attributes.href), 'utf-8')
+        fs.readFileSync(path.join(outputDir, globalPreload.attributes.href ?? ''), 'utf-8')
       ).toMatchInlineSnapshot(`"div{background:#0ff}"`);
     }
 
     // CSS Module
     expect(
-      fs.readFileSync(path.join(outputDir, links[2].attributes.href), 'utf-8')
+      fs.readFileSync(path.join(outputDir, links[2]?.attributes.href ?? ''), 'utf-8')
     ).toMatchInlineSnapshot(`".HPV33q_text{color:#1e90ff}"`);
 
     const styledHtml = await getPageHtml(outputDir, 'styled.html');
@@ -251,16 +251,16 @@ describe('exports static', () => {
 
     const links = indexHtml.querySelectorAll('html > head > link[as="font"]');
     expect(links.length).toBe(1);
-    expect(links[0].attributes.href).toBe(
+    expect(links[0]?.attributes.href).toBe(
       '/assets/__e2e__/static-rendering/sweet.7c9263d3cffcda46ff7a4d9c00472c07.ttf'
     );
 
-    expect(links[0].toString()).toMatch(
+    expect(links[0]?.toString()).toMatch(
       /<link rel="preload" href="\/assets\/__e2e__\/static-rendering\/sweet\.[a-zA-Z0-9]{32}\.ttf" as="font" crossorigin="" >/
     );
 
     expect(
-      fs.readFileSync(path.join(outputDir, links[0].attributes.href.replace(/\?.*$/, '')), 'utf-8')
+      fs.readFileSync(path.join(outputDir, links[0]?.attributes.href?.replace(/\?.*$/, '') ?? ''), 'utf-8')
     ).toBeDefined();
 
     // Ensure the font is used

diff --git a/packages/@expo/cli/e2e/__tests__/export/static-splitting.test.ts b/packages/@expo/cli/e2e/__tests__/export/static-splitting.test.ts
@@ -157,8 +157,8 @@ describe('exports static with bundle splitting', () => {
 
     const script = indexHtml
       .querySelectorAll('script')
-      .filter((script) => !!script.attributes.src)[0];
-    const jsBundle = fs.readFileSync(path.join(outputDir, script.attributes.src), 'utf8');
+      .find((script) => !!script.attributes.src);
+    const jsBundle = fs.readFileSync(path.join(outputDir, script?.attributes.src ?? ''), 'utf8');
 
     // Ensure the bundle is valid
     expect(jsBundle).toMatch('__BUNDLE_START_TIME__');
@@ -222,13 +222,13 @@ describe('exports static with bundle splitting', () => {
     expect(globalPreload).toBeDefined();
     if (globalPreload) {
       expect(
-        fs.readFileSync(path.join(outputDir, globalPreload.attributes.href), 'utf-8')
+        fs.readFileSync(path.join(outputDir, globalPreload.attributes.href!), 'utf-8')
       ).toMatchInlineSnapshot(`"div{background:#0ff}"`);
     }
 
     // CSS Module
     expect(
-      fs.readFileSync(path.join(outputDir, links[2].attributes.href), 'utf-8')
+      fs.readFileSync(path.join(outputDir, links[2]?.attributes.href ?? ''), 'utf-8')
     ).toMatchInlineSnapshot(`".HPV33q_text{color:#1e90ff}"`);
 
     const styledHtml = await getPageHtml(outputDir, 'styled.html');
@@ -246,16 +246,16 @@ describe('exports static with bundle splitting', () => {
 
     const links = indexHtml.querySelectorAll('html > head > link[as="font"]');
     expect(links.length).toBe(1);
-    expect(links[0].attributes.href).toBe(
+    expect(links[0]?.attributes.href).toBe(
       '/assets/__e2e__/static-rendering/sweet.7c9263d3cffcda46ff7a4d9c00472c07.ttf'
     );
 
-    expect(links[0].toString()).toMatch(
+    expect(links[0]?.toString()).toMatch(
       /<link rel="preload" href="\/assets\/__e2e__\/static-rendering\/sweet\.[a-zA-Z0-9]{32}\.ttf" as="font" crossorigin="" >/
     );
 
     expect(
-      fs.readFileSync(path.join(outputDir, links[0].attributes.href.replace(/\?.*$/, '')), 'utf-8')
+      fs.readFileSync(path.join(outputDir, links[0]?.attributes.href?.replace(/\?.*$/, '') ?? ''), 'utf-8')
     ).toBeDefined();
 
     // Ensure the font is used

diff --git a/packages/@expo/cli/e2e/__tests__/install-test.ts b/packages/@expo/cli/e2e/__tests__/install-test.ts
@@ -8,7 +8,6 @@ import {
   getLoadedModulesAsync,
   setupTestProjectWithOptionsAsync,
   findProjectFiles,
-  stripWhitespace,
 } from './utils';
 import { executePnpmAsync, executeExpoAsync } from '../utils/expo';
 

diff --git a/packages/@expo/cli/e2e/__tests__/utils.ts b/packages/@expo/cli/e2e/__tests__/utils.ts
@@ -238,7 +238,7 @@ export function getHtmlHelpers(outputDir: string) {
       // Remove scripts without a src attribute
       .filter((script) => !!script.attributes.src)
       .map((script) => {
-        expect(fs.existsSync(path.join(outputDir, script.attributes.src))).toBe(true);
+        expect(fs.existsSync(path.join(outputDir, script.attributes.src ?? ''))).toBe(true);
 
         return script.attributes.src;
       });
@@ -248,8 +248,8 @@ export function getHtmlHelpers(outputDir: string) {
     return tags;
   }
 
-  function ensureEntryChunk(relativePath: string) {
-    expect(fs.readFileSync(path.join(outputDir, relativePath), 'utf8')).toMatch(
+  function ensureEntryChunk(relativePath: string | undefined) {
+    expect(fs.readFileSync(path.join(outputDir, relativePath ?? ''), 'utf8')).toMatch(
       /__BUNDLE_START_TIME__/
     );
   }

diff --git a/packages/@expo/cli/e2e/utils/process.ts b/packages/@expo/cli/e2e/utils/process.ts
@@ -29,7 +29,7 @@ export async function executeAsync(
   const { npm_config_minimum_release_age, ...processEnv } = process.env;
   const [bin, ...flags] = command ? command.concat(commandOrFlags) : commandOrFlags;
 
-  const child = execa(bin, flags, {
+  const child = execa(bin!, flags, {
     ...spawnOptions,
     cwd,
     env: { ...processEnv, ...env },

diff --git a/packages/@expo/cli/e2e/utils/server.ts b/packages/@expo/cli/e2e/utils/server.ts
@@ -117,7 +117,7 @@ export function createBackgroundServer({
       spawnOptions.env ??= {};
       spawnOptions.env.PORT = String(port);
 
-      child = spawn(bin, commandOrFlags, {
+      child = spawn(bin!, commandOrFlags, {
         shell: false,
         stdio: ['ignore', 'pipe', 'pipe'],
         ...spawnOptions,

diff --git a/packages/@expo/cli/src/api/user/otp.ts b/packages/@expo/cli/src/api/user/otp.ts
@@ -105,7 +105,7 @@ async function promptForBackupOTPAsync(
     body: JSON.stringify({
       username,
       password,
-      secondFactorDeviceID: device.id,
+      secondFactorDeviceID: device?.id,
     }),
   });