renderSignatureToHtml

function renderSignatureToHtml(
  signatureText: string,
  ranges: TypeRange[],
  options?: { format?: boolean; theme?: BundledTheme }
): Promise<string>;

Render a pre-built signature string with ranges to syntax-highlighted HTML.

Takes a plain text signature and its ranges (e.g., from typeToStringWithRanges),
applies optional prettier formatting + Shiki tokenization + range merging,
and returns an HTML string.

Promise<string>