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@clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873

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@clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
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confirmed

Description

@hayata-suenaga
hayata-suenaga
opened on Jun 16, 2026

Preliminary Checks

Reproduction

https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro

Publishable key

pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ

Description

Description

@clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.

Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:

Property 'singleton_exports' doesn't exist

This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.

Steps To Reproduce

  1. Create a new Expo app.
  2. Install @clerk/expo@3.4.3.
  3. Import getClerkInstance from @clerk/expo.
  4. Invoke the function.
  5. Observe the runtime error.

Expected Behavior

getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.

Actual Behavior

Accessing getClerkInstance from @clerk/expo throws:

Property 'singleton_exports' doesn't exist

Regression

This appears to be a regression in @clerk/expo@3.4.3.

When comparing the published package output:

  • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
  • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.

Suspected Cause

The published @clerk/expo@3.4.3/dist/index.js contains this export getter:

Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});

However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.

Environment

System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3

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    confirmed

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      No milestone

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      None yet

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      No branches or pull requests

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`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
      Skip to content
      @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
      Closed
      Closed
      @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
      Labels
      confirmed
      Description
      @hayata-suenaga
      hayata-suenaga
      opened on Jun 16, 2026
      Preliminary Checks
      Reproduction
      https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
      Publishable key
      pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
      Description
      Description
      @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
      Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
      Property 'singleton_exports' doesn't exist

      This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
      Steps To Reproduce
      1. Create a new Expo app.
      2. Install @clerk/expo@3.4.3.
      3. Import getClerkInstance from @clerk/expo.
      4. Invoke the function.
      5. Observe the runtime error.
      Expected Behavior
      getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
      Actual Behavior
      Accessing getClerkInstance from @clerk/expo throws:
      Property 'singleton_exports' doesn't exist

      Regression
      This appears to be a regression in @clerk/expo@3.4.3.
      When comparing the published package output:
      • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
      • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
      Suspected Cause
      The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
      Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
      However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
      Environment
      System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
      Metadata
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        Labels
        confirmed
        Type
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        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
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var __re = new RegExp('^' + ".*" + '
`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
          Skip to content
          @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
          Closed
          Closed
          @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
          Labels
          confirmed
          Description
          @hayata-suenaga
          hayata-suenaga
          opened on Jun 16, 2026
          Preliminary Checks
          Reproduction
          https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
          Publishable key
          pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
          Description
          Description
          @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
          Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
          Property 'singleton_exports' doesn't exist

          This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
          Steps To Reproduce
          1. Create a new Expo app.
          2. Install @clerk/expo@3.4.3.
          3. Import getClerkInstance from @clerk/expo.
          4. Invoke the function.
          5. Observe the runtime error.
          Expected Behavior
          getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
          Actual Behavior
          Accessing getClerkInstance from @clerk/expo throws:
          Property 'singleton_exports' doesn't exist

          Regression
          This appears to be a regression in @clerk/expo@3.4.3.
          When comparing the published package output:
          • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
          • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
          Suspected Cause
          The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
          Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
          However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
          Environment
          System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
          Metadata
          Metadata
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          No one assigned
            Labels
            confirmed
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
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var ref = document.referrer;
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observer.observe(document.body, { childList: true, subtree: true });
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} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
              Skip to content
              @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
              Closed
              Closed
              @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
              Labels
              confirmed
              Description
              @hayata-suenaga
              hayata-suenaga
              opened on Jun 16, 2026
              Preliminary Checks
              Reproduction
              https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
              Publishable key
              pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
              Description
              Description
              @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
              Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
              Property 'singleton_exports' doesn't exist

              This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
              Steps To Reproduce
              1. Create a new Expo app.
              2. Install @clerk/expo@3.4.3.
              3. Import getClerkInstance from @clerk/expo.
              4. Invoke the function.
              5. Observe the runtime error.
              Expected Behavior
              getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
              Actual Behavior
              Accessing getClerkInstance from @clerk/expo throws:
              Property 'singleton_exports' doesn't exist

              Regression
              This appears to be a regression in @clerk/expo@3.4.3.
              When comparing the published package output:
              • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
              • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
              Suspected Cause
              The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
              Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
              However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
              Environment
              System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
              Metadata
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                Labels
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                No projects
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                  No milestone
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                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
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(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
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var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
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});
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observer.observe(document.body, { childList: true, subtree: true });
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} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
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try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
                  Skip to content
                  @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
                  Closed
                  Closed
                  @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
                  Labels
                  confirmed
                  Description
                  @hayata-suenaga
                  hayata-suenaga
                  opened on Jun 16, 2026
                  Preliminary Checks
                  Reproduction
                  https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
                  Publishable key
                  pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
                  Description
                  Description
                  @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
                  Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
                  Property 'singleton_exports' doesn't exist

                  This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
                  Steps To Reproduce
                  1. Create a new Expo app.
                  2. Install @clerk/expo@3.4.3.
                  3. Import getClerkInstance from @clerk/expo.
                  4. Invoke the function.
                  5. Observe the runtime error.
                  Expected Behavior
                  getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
                  Actual Behavior
                  Accessing getClerkInstance from @clerk/expo throws:
                  Property 'singleton_exports' doesn't exist

                  Regression
                  This appears to be a regression in @clerk/expo@3.4.3.
                  When comparing the published package output:
                  • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
                  • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
                  Suspected Cause
                  The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
                  Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
                  However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
                  Environment
                  System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    confirmed
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
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function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
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lastUrl = location.href;
setTimeout(tryTheater, 500);
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observer.observe(document.body, { childList: true, subtree: true });
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
                      Skip to content
                      @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
                      Closed
                      Closed
                      @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
                      Labels
                      confirmed
                      Description
                      @hayata-suenaga
                      hayata-suenaga
                      opened on Jun 16, 2026
                      Preliminary Checks
                      Reproduction
                      https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
                      Publishable key
                      pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
                      Description
                      Description
                      @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
                      Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
                      Property 'singleton_exports' doesn't exist

                      This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
                      Steps To Reproduce
                      1. Create a new Expo app.
                      2. Install @clerk/expo@3.4.3.
                      3. Import getClerkInstance from @clerk/expo.
                      4. Invoke the function.
                      5. Observe the runtime error.
                      Expected Behavior
                      getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
                      Actual Behavior
                      Accessing getClerkInstance from @clerk/expo throws:
                      Property 'singleton_exports' doesn't exist

                      Regression
                      This appears to be a regression in @clerk/expo@3.4.3.
                      When comparing the published package output:
                      • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
                      • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
                      Suspected Cause
                      The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
                      Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
                      However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
                      Environment
                      System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
                      Metadata
                      Metadata
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                      No one assigned
                        Labels
                        confirmed
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
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el.style.position = 'static';
el.style.top = 'auto';
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observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
                          Skip to content
                          @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
                          Closed
                          Closed
                          @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
                          Labels
                          confirmed
                          Description
                          @hayata-suenaga
                          hayata-suenaga
                          opened on Jun 16, 2026
                          Preliminary Checks
                          Reproduction
                          https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
                          Publishable key
                          pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
                          Description
                          Description
                          @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
                          Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
                          Property 'singleton_exports' doesn't exist

                          This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
                          Steps To Reproduce
                          1. Create a new Expo app.
                          2. Install @clerk/expo@3.4.3.
                          3. Import getClerkInstance from @clerk/expo.
                          4. Invoke the function.
                          5. Observe the runtime error.
                          Expected Behavior
                          getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
                          Actual Behavior
                          Accessing getClerkInstance from @clerk/expo throws:
                          Property 'singleton_exports' doesn't exist

                          Regression
                          This appears to be a regression in @clerk/expo@3.4.3.
                          When comparing the published package output:
                          • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
                          • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
                          Suspected Cause
                          The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
                          Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
                          However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
                          Environment
                          System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            confirmed
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
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document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
`@clerk/expo@3.4.3` root `getClerkInstance` export throws missing `singleton_exports` · Issue #8873 · clerk/javascript · GitHub
                              Skip to content
                              @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports #8873
                              Closed
                              Closed
                              @clerk/expo@3.4.3 root getClerkInstance export throws missing singleton_exports#8873
                              Labels
                              confirmed
                              Description
                              @hayata-suenaga
                              hayata-suenaga
                              opened on Jun 16, 2026
                              Preliminary Checks
                              Reproduction
                              https://github.com/hayata-suenaga/clerk-expo-getclerkinstance-repro
                              Publishable key
                              pk_live_Y2xlcmsuZWlzdWtlLm9yZyQ
                              Description
                              Description
                              @clerk/expo@3.4.3 appears to ship a broken root export for getClerkInstance.
                              Importing getClerkInstance from @clerk/expo and accessing it in an Expo app throws the following runtime error:
                              Property 'singleton_exports' doesn't exist

                              This seems to happen before any Clerk instance, ClerkProvider, publishable key, token cache, or auth flow behavior is involved. The failure appears to be caused by the generated package output for the root @clerk/expo entrypoint.
                              Steps To Reproduce
                              1. Create a new Expo app.
                              2. Install @clerk/expo@3.4.3.
                              3. Import getClerkInstance from @clerk/expo.
                              4. Invoke the function.
                              5. Observe the runtime error.
                              Expected Behavior
                              getClerkInstance should be exported from the root @clerk/expo entrypoint and be accessible as documented.
                              Actual Behavior
                              Accessing getClerkInstance from @clerk/expo throws:
                              Property 'singleton_exports' doesn't exist

                              Regression
                              This appears to be a regression in @clerk/expo@3.4.3.
                              When comparing the published package output:
                              • @clerk/expo@3.4.2 exports getClerkInstance directly from ./provider/singleton/singleton.js.
                              • @clerk/expo@3.4.3 defines the root export getter as singleton_exports.getClerkInstance, but singleton_exports is not declared in dist/index.js.
                              Suspected Cause
                              The published @clerk/expo@3.4.3/dist/index.js contains this export getter:
                              Object.defineProperty(exports,"getClerkInstance",{enumerable: true,get: function(){returnsingleton_exports.getClerkInstance;},});
                              However, singleton_exports does not appear to be defined in that module. The file imports ./provider/singleton/index.js, but the local binding is named differently, so the generated root export references a missing symbol.
                              Environment
                              System:
OS: macOS 26.5.1
CPU: (12) arm64 Apple M2 Max
Memory: 49.31 GB / 96.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.16.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/node
npm: 11.13.0 - /Users/hayatasuenaga/.nvm/versions/node/v24.16.0/bin/npm
pnpm: 10.13.1 - /Users/hayatasuenaga/Library/pnpm/pnpm
Watchman: 2025.05.26.00 - /opt/homebrew/bin/watchman
Browsers:
Chrome: 149.0.7827.104
Firefox: 145.0
Safari: 26.5
npmPackages:
@clerk/expo: 3.4.3 => 3.4.3 @types/react: ~19.2.2 => 19.2.17 expo: ~56.0.12 => 56.0.12 expo-dev-client: ~56.0.20 => 56.0.20 expo-secure-store: ~56.0.4 => 56.0.4 expo-status-bar: ~56.0.4 => 56.0.4 react: 19.2.3 => 19.2.3 react-dom: 19.2.3 => 19.2.3 react-native: 0.85.3 => 0.85.3 typescript: ~6.0.3 => 6.0.3
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                confirmed
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions