Injects the CSP <meta> tag, bundled default @font-face<style>, and the window.MJVideo
inline <script> right after <!doctype ...> (or at byte 0 when no doctype is present).
The preamble is collapsed onto a single line so line numbers in staged HTML remain unchanged.
Injects the CSP
<meta>tag, bundled default@font-face<style>, and thewindow.MJVideoinline<script>right after<!doctype ...>(or at byte 0 when no doctype is present). The preamble is collapsed onto a single line so line numbers in staged HTML remain unchanged.