Language: TypeScript
Label: safe
CWE: CWE-79 \u2014 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Code:
function getElementFromTemplate(template: UpdateFunctionWithMethods<unknown>): HTMLElement {
    const element = document.createElement("div");
    template(document.body, element);

    return element;
}