Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /var/www/ecommerce/node_modules/csso/lib/restructure/prepare/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

var resolveKeyword = require('css-tree').keyword;
var walk = require('css-tree').walk;
var generate = require('css-tree').generate;
var createDeclarationIndexer = require('./createDeclarationIndexer');
var processSelector = require('./processSelector');

module.exports = function prepare(ast, options) {
    var markDeclaration = createDeclarationIndexer();

    walk(ast, {
        visit: 'Rule',
        enter: function processRule(node) {
            node.block.children.each(markDeclaration);
            processSelector(node, options.usage);
        }
    });

    walk(ast, {
        visit: 'Atrule',
        enter: function(node) {
            if (node.prelude) {
                node.prelude.id = null; // pre-init property to avoid multiple hidden class for generate
                node.prelude.id = generate(node.prelude);
            }

            // compare keyframe selectors by its values
            // NOTE: still no clarification about problems with keyframes selector grouping (issue #197)
            if (resolveKeyword(node.name).basename === 'keyframes') {
                node.block.avoidRulesMerge = true;  /* probably we don't need to prevent those merges for @keyframes
                                                       TODO: need to be checked */
                node.block.children.each(function(rule) {
                    rule.prelude.children.each(function(simpleselector) {
                        simpleselector.compareMarker = simpleselector.id;
                    });
                });
            }
        }
    });

    return {
        declaration: markDeclaration
    };
};