• May 28, 2018

PNP JS Error Fixed – IE 11 Polyfill

Recently I came across the below errors running the PNP JS library with IE11.   The library leverages newer ES6 JavaScript concepts and IE 11 has an older JavaScript runtime engine.

To resolve that, we need to reference more JS libraries as “polyfill” (sometimes called “shim”) to close the gap.

After extra JS files are referenced you can continue using PNP JS normally.  As far as I can tell, there is no negative impact to other browsers by adding these JS polyfills.   Cheers! 

Download JS Polyfill

• bluebird.min.js
• es6-promise.min.js
• fetch.js

Code

IE Errors

• ReferenceError: ‘Promise’ is undefined (sp-pnp-js/dist/pnp.min.js:1:3661)
• Unhandled rejection ReferenceError: ‘Headers’ is undefined

Screenshots

References

• https://github.com/SharePoint/PnP-JS-Core/wiki/Install-and-Use#polyfill
• https://github.com/stefanpenner/es6-promise
• https://github.com/github/fetch#installation
• https://github.com/petkaantonov/bluebird

• May 28, 2018
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• May 9, 2018

What’s in that patch? May 2018

NOTE – PDF format updated to include both SharePoint 2013 and 2016 notes.

Ever wondered what fixes are inside of a given CU?   Please see attached PDF with full detail. I wanted a new format for easy reading.   Show management and make the business case for why downtime should be taken to apply CUs.  Also posted at https://sharepointupdates.com/

If you found this helpful, please leave a comment.   

Download

• May 9, 2018
• No Comments
• Uncategorized