The toString() method of the TrustedHTML interface returns a string which may safely inserted into an injection sink.

None.

A string containing the sanitized HTML.

The constant escaped is an object created via the Trusted Types policy escapeHTMLPolicy. The toString() method returns a string to safely insert into a document.

const escapeHTMLPolicy = trustedTypes.createPolicy("myEscapePolicy", {
  createHTML: (string) => string.replace(/>/g, "<"),
});

const escaped = escapeHTMLPolicy.createHTML("<img src=x onerror=alert(1)>");
console.log(escaped.toString());