Version 8.1.1 needs IE11 support

Technical Support
1

Which product are you using?
PDF.js Express Plus

PDF.js Express Plus version 8.1.1

This is printed to the developer console when you load pdfjs express

[WebViewer] UI version: 8.1.0, Core version: 8.1.1, Build: MTAvMjEvMjAyMXw2OGY2MTQ1NWU=, WebViewer Server: false, Full API: false

“ReferenceError: ‘Proxy’ is undefined
at ea (https://192.168.100.20/viewer/lib/core/webviewer-core.min.js:1821:230)
at na (https://192.168.100.20/viewer/lib/core/webviewer-core.min.js:361:117)
at Ia (https://192.168.100.20/viewer/lib/core/webviewer-core.min.js:257:334)
at a (https://192.168.100.20/viewer/lib/core/webviewer-core.min.js:1874:371)
at Anonymous function (https://192.168.100.20/viewer/lib/ui/webviewer-ui.min.js:239:150506)
at Anonymous function (https://192.168.100.20/viewer/lib/ui/webviewer-ui.min.js:26:84550)
at r (https://192.168.100.20/viewer/lib/ui/webviewer-ui.min.js:19:38821)”

Detailed description of issue
I have upgraded from 7.3.1 to 8.1.1 and it breaks in IE 11. The previous version was working in IE11 and I see the development notes stating that 8.x is IE 11 compatible.

Expected behaviour
I expect 8.x to work with IE 11.

Does your issue happen with every document, or just one?
Every document

Link to document
The documents are proprietary, so I can’t share.

Code snippet
package.json

“dependencies”: {
“@pdftron/pdfjs-express”: “^8.1.1”,
“@vue/cli-plugin-babel”: “^4.1.1”,
“@vue/cli-plugin-eslint”: “^4.1.1”,
“@vue/cli-service”: “^4.3.1”,
“axios”: “^0.21.1”,
“babel-eslint”: “^10.0.3”,
“core-js”: “^3.4.8”,
“eslint”: “^6.7.2”,
“eslint-plugin-vue”: “^6.2.2”,
“vue”: “^2.6.10”,
“vue-axios”: “^3.2.4”,
“vue-tag-manager”: “^0.1.2”,
“vue-template-compiler”: “^2.6.10”
},
“browserslist”: {
“production”: [
“ie 11”
],
“development”: [
“ie 11”
]
}

3

Hello, I’m Ron, an automated tech support bot :robot:

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:

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4

Hey there,

We have dropped support for IE11 as of version 8.0 - it was removed from our browser support page.

This should have been communicated in the change-log - this slipped my mind and I apologize for the inconvenience. I will make sure to get that updated.

Thanks,
Logan