JS import integrity check

[marcusbooyah]

We recently had an issue at InStep where a CDN was not working properly, and we were only getting half of a JS file.

It would be great to have an API that can import a JS module while also checking the integrity.

This works:

const request = new Request("https://cdn.bootcdn.net/ajax/libs/echarts/5.5.0/echarts.min.js", {
  integrity: "sha256-QvgynZibb2U53SsVu98NggJXYqwRL7tg3FeyfXvPOUY=",
});
const response = await fetch(request);

This throws an exception:

const request = new Request("https://cdn.bootcdn.net/ajax/libs/echarts/5.5.0/echarts.min.js", {
  integrity: "sha256-foobar",
});
const response = await fetch(request);

Something like the following would be great:

IJSObjectReference module = await JS.ImportModuleAsync(
	src:       "https://cdn.bootcdn.net/ajax/libs/echarts/5.5.0/echarts.min.js",
	integrity: "sha256-QvgynZibb2U53SsVu98NggJXYqwRL7tg3FeyfXvPOUY=");

IJSObjectReference module = await JS.ImportModuleAsync(
	src:       "https://cdn.bootcdn.net/ajax/libs/echarts/5.5.0/echarts.min.js",
	integrity: "sha256-QvgynZibb2U53SsVu98NggJXYqwRL7tg3FeyfXvPOUY=",
    fallback: "./_content/MyPackage/echarts.min.js");

The second option here first checks the CDN, and falls back the local version if there are any issues loading the script from the CDN.

[marcusbooyah]

@caroHagg did this and it's merged now