wp-login.php:461Outputs the JavaScript to handle the form shaking on the login page.
function wp_shake_js() { wp_print_inline_script_tag( "document.querySelector('form').classList.add('shake');" );}Introduced in 3.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-login.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.