[Firefox] Live URL Viewer: ReferenceError: SharedArrayBuffer is not defined

[valenting]

Uncaught ReferenceError: SharedArrayBuffer is not defined
    [23]< https://jsdom.github.io/whatwg-url/whatwg-url.js:7631
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    [3]< https://jsdom.github.io/whatwg-url/whatwg-url.js:271
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    [24]< https://jsdom.github.io/whatwg-url/whatwg-url.js:7777
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    [12]< https://jsdom.github.io/whatwg-url/whatwg-url.js:2936
    o https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    r https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    <anonymous> https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    <anonymous> https://jsdom.github.io/whatwg-url/whatwg-url.js:1
    <anonymous> https://jsdom.github.io/whatwg-url/whatwg-url.js:1

The code at that location is:

const sabByteLengthGetter =
    Object.getOwnPropertyDescriptor(SharedArrayBuffer.prototype, "byteLength").get;

According to MDN
SharedArrayBuffer objects are in principle always available, but unfortunately the constructor on the global object is hidden, unless the two headers mentioned above are set, for compatibility with web content.

Not sure exactly where the code comes from, but the result is that the live URL viewer doesn't work in Firefox.

[domenic]

Hmm. whatwg-url itself targets Node.js, but live-url-viewer needs to work everywhere. Maybe we'll add a fake SAB to the global to work around this...

[brentonhouse]

@domenic - Is there a polyfill for SharedArrayBuffer for those of us that use whatwg-url with non-node.js platforms (such as cross-platform native mobile solutions)? In the meantime, I rolled back to the old version of whatwg-url but would love to be able to keep using future versions of this library!