Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6

Closed
Closed
Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
Labels
errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
Milestone
🦊 Mobile Lockdown (JSC/V8)

Description

@bentobox19
bentobox19
opened on Feb 26, 2022

PoC

https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md

Discussion

The following error

 ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.

FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};

From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/

System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.

From https://docs.sentry.io/platforms/react-native/configuration/options/

integrations
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.

defaultIntegrations
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.

Disable default integrations in sentry

diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),

Items of Action

  • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
  • Generate an alternative plan if the removal of such option is not viable for any reason.

Metadata

Metadata

Assignees

No one assigned

    Labels

    errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8

    Type

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    Projects

    No projects

      Milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions

      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
       blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
      Closed
      Closed
      Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
      Labels
      errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
      Milestone
      🦊 Mobile Lockdown (JSC/V8)
      Description
      @bentobox19
      bentobox19
      opened on Feb 26, 2022
      PoC
      https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
      Discussion
      The following error
       ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

      Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
      FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
      From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
      System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
      From https://docs.sentry.io/platforms/react-native/configuration/options/
       integrations
      
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
      defaultIntegrations
      
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
      Disable default integrations in sentry
      diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
      Items of Action
      • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
      • Generate an alternative plan if the removal of such option is not viable for any reason.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
        Type
        No type
        Projects
        No projects
          Milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
          Closed
          Closed
          Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
          Labels
          errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
          Milestone
          🦊 Mobile Lockdown (JSC/V8)
          Description
          @bentobox19
          bentobox19
          opened on Feb 26, 2022
          PoC
          https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
          Discussion
          The following error
           ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

          Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
          FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
          From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
          System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
          From https://docs.sentry.io/platforms/react-native/configuration/options/
           integrations
          
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
          defaultIntegrations
          
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
          Disable default integrations in sentry
          diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
          Items of Action
          • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
          • Generate an alternative plan if the removal of such option is not viable for any reason.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
            Type
            No type
            Projects
            No projects
              Milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
              Closed
              Closed
              Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
              Labels
              errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
              Milestone
              🦊 Mobile Lockdown (JSC/V8)
              Description
              @bentobox19
              bentobox19
              opened on Feb 26, 2022
              PoC
              https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
              Discussion
              The following error
               ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

              Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
              FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
              From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
              System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
              From https://docs.sentry.io/platforms/react-native/configuration/options/
               integrations
              
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
              defaultIntegrations
              
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
              Disable default integrations in sentry
              diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
              Items of Action
              • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
              • Generate an alternative plan if the removal of such option is not viable for any reason.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                Type
                No type
                Projects
                No projects
                  Milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
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;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
                  Closed
                  Closed
                  Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
                  Labels
                  errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                  Milestone
                  🦊 Mobile Lockdown (JSC/V8)
                  Description
                  @bentobox19
                  bentobox19
                  opened on Feb 26, 2022
                  PoC
                  https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
                  Discussion
                  The following error
                   ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

                  Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
                  FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
                  From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
                  System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
                  From https://docs.sentry.io/platforms/react-native/configuration/options/
                   integrations
                  
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
                  defaultIntegrations
                  
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
                  Disable default integrations in sentry
                  diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
                  Items of Action
                  • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
                  • Generate an alternative plan if the removal of such option is not viable for any reason.
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
                      Closed
                      Closed
                      Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
                      Labels
                      errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                      Milestone
                      🦊 Mobile Lockdown (JSC/V8)
                      Description
                      @bentobox19
                      bentobox19
                      opened on Feb 26, 2022
                      PoC
                      https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
                      Discussion
                      The following error
                       ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

                      Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
                      FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
                      From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
                      System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
                      From https://docs.sentry.io/platforms/react-native/configuration/options/
                       integrations
                      
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
                      defaultIntegrations
                      
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
                      Disable default integrations in sentry
                      diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
                      Items of Action
                      • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
                      • Generate an alternative plan if the removal of such option is not viable for any reason.
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                        Type
                        No type
                        Projects
                        No projects
                          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) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
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('^' + ".*" + '

                          Skip to content
                          Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
                          Closed
                          Closed
                          Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
                          Labels
                          errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                          Milestone
                          🦊 Mobile Lockdown (JSC/V8)
                          Description
                          @bentobox19
                          bentobox19
                          opened on Feb 26, 2022
                          PoC
                          https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
                          Discussion
                          The following error
                           ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

                          Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
                          FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
                          From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
                          System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
                          From https://docs.sentry.io/platforms/react-native/configuration/options/
                           integrations
                          
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
                          defaultIntegrations
                          
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
                          Disable default integrations in sentry
                          diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
                          Items of Action
                          • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
                          • Generate an alternative plan if the removal of such option is not viable for any reason.
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                            errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
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, '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();
}
// Toggle with Alt+Shift+D
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); }
})();
})();

                              Skip to content
                              Proof of Concept Insights - Avoid overwrite of Function.prototype.toString() #6
                              Closed
                              Closed
                              Proof of Concept Insights - Avoid overwrite of Function.prototype.toString()#6
                              Labels
                              errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                              Milestone
                              🦊 Mobile Lockdown (JSC/V8)
                              Description
                              @bentobox19
                              bentobox19
                              opened on Feb 26, 2022
                              PoC
                              https://github.com/LavaMoat/docs/blob/main/react-native-and-ses-lockdown.md
                              Discussion
                              The following error
                               ERROR failed to delete intrinsics.%FunctionPrototype%.toString.prototype [TypeError: Unable to delete property.]

                              Is tracked to sentry assigning to Function.prototype.toString. This is a System Integration.
                              FunctionToString.prototype.setupOnce=function(){// eslint-disable-next-line @typescript-eslint/unbound-methodoriginalFunctionToString=Function.prototype.toString;// eslint-disable-next-line @typescript-eslint/no-explicit-anyFunction.prototype.toString=function(){varargs=[];for(var_i=0;_i<arguments.length;_i++){args[_i]=arguments[_i];}varcontext=this.__sentry_original__||this;returnoriginalFunctionToString.apply(context,args);};};
                              From https://docs.sentry.io/platforms/javascript/configuration/integrations/default/
                              System integrations are enabled by default to integrate into the standard library or the interpreter itself. They are documented so you can be both aware of what they do and disable them if they cause issues.
                              From https://docs.sentry.io/platforms/react-native/configuration/options/
                               integrations
                              
In some SDKs, the integrations are configured through this parameter on library initialization. For more information, please see our documentation for a specific integration.
                              defaultIntegrations
                              
This can be used to disable integrations that are added by default. When set to false, no default integrations are added.
                              Disable default integrations in sentry
                              diff --git a/app/util/setupSentry.js b/app/util/setupSentry.js
index 7b633ec0..a98c1b5a 100644
--- a/app/util/setupSentry.js+++ b/app/util/setupSentry.js@@ -18,6 +18,7 @@ export default function setupSentry() {
dsn,
debug: __DEV__,
environment,
+ defaultIntegrations: false,
integrations: [
new Dedupe(),
new ExtraErrorData(),
                              Items of Action
                              • Understand the impact on the MetaMask Mobile App product of removing these default integrations.
                              • Generate an alternative plan if the removal of such option is not viable for any reason.
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                errorbuild/run time blockerlockdownmetamask-mobilev8Chrome V8
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions