wp-includes/media.php:6600Sets a global JS variable to indicate that client-side media processing is enabled.
function wp_set_client_side_media_processing_flag(): void { if ( ! wp_is_client_side_media_processing_enabled() ) { return; } wp_add_inline_script( 'wp-block-editor', 'window.__clientSideMediaProcessing = true;', 'before' ); $chromium_version = wp_get_chromium_major_version(); if ( null !== $chromium_version && $chromium_version >= 137 ) { wp_add_inline_script( 'wp-block-editor', 'window.__documentIsolationPolicy = true;', 'before' ); }}Introduced in 7.1.0.
Signature, return type and hooks compared across 1 parsed release.
src/wp-includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.