TypeError: cannot redefine property: __sentry_original__

[dirtyredz]

• Review the documentation: https://docs.sentry.io/
• Search for existing issues: https://github.com/getsentry/sentry-javascript/issues
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Package + Version

• @sentry/browser
• @sentry/node
• raven-js
• raven-node (raven for node)
• other:

Version:

5.1.1

Description

Sentry worked as expected with zero issues, however the company I was helping uses a vpn for there employee's, and when the employee's visted the site from within the vpn they were presented with TypeError: cannot redefine property: sentry_original
The script that sentry was attached to failed to continue executing as sentry was at the top of the file.

Visiting the same website normally (not inside a vpn) everything worked as expected.

[guanzo]

I encountered the same bug. Here's how I can reproduce it.

1. On the same page, load 2 webpack projects that both initiate Sentry with default integrations.
2. Define and run this function

function test () {
	var xhr = new XMLHttpRequest();
        xhr.onload = () => console.log('loaded') // This throws error
        // xhr.addEventListener("load", () => console.log('loaded')); This does not throw error
        xhr.open("GET", "https://jsonplaceholder.typicode.com/todos/1");
        xhr.send();
}

Stack trace:

Uncaught TypeError: Cannot redefine property: __sentry_original__
    at Function.defineProperties (<anonymous>)
    at fill (VM41745 object.js:30)
    at wrapProp (VM41777 breadcrumbs.js:284)
    at eval (VM41777 breadcrumbs.js:361)
    at Array.forEach (<anonymous>)
    at XMLHttpRequest.eval (VM41777 breadcrumbs.js:360)
    at XMLHttpRequest.eval [as send] (VM41777 breadcrumbs.js:382)
    at test (VM40732 DemoServiceWorker.vue:111)
    at sentryWrapped (VM41775 helpers.js:78)

[HazAT]

I will take a look whats going on.

[HazAT]

The release 5.1.2 will fix it.

[dirtyredz]

Awesome Ty