Replace innerHtml with insertRule #444
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The use of
.innerHTMLcauses issues for hosts that have opted in to Trusted Types. Because.innerHTMLcan act as a vector for DOM-XSS attacks, websites might lock it down with Trusted Types, causing the specific line to throw a runtime error.In the case of this specific library, the
.innerHTMLcall could just as easily be replaced with inserting a CSS rule, as follows:Note that to satisfy TypeScript, null-coalescing is added to the
.sheetaccess. However, when a style element is attached to the DOM, that.sheetproperty should never be undefined.