source: trip-planner-front/node_modules/csso/lib/restructure/prepare/index.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 1.6 KB
Line 
1var resolveKeyword = require('css-tree').keyword;
2var walk = require('css-tree').walk;
3var generate = require('css-tree').generate;
4var createDeclarationIndexer = require('./createDeclarationIndexer');
5var processSelector = require('./processSelector');
6
7module.exports = function prepare(ast, options) {
8 var markDeclaration = createDeclarationIndexer();
9
10 walk(ast, {
11 visit: 'Rule',
12 enter: function processRule(node) {
13 node.block.children.each(markDeclaration);
14 processSelector(node, options.usage);
15 }
16 });
17
18 walk(ast, {
19 visit: 'Atrule',
20 enter: function(node) {
21 if (node.prelude) {
22 node.prelude.id = null; // pre-init property to avoid multiple hidden class for generate
23 node.prelude.id = generate(node.prelude);
24 }
25
26 // compare keyframe selectors by its values
27 // NOTE: still no clarification about problems with keyframes selector grouping (issue #197)
28 if (resolveKeyword(node.name).basename === 'keyframes') {
29 node.block.avoidRulesMerge = true; /* probably we don't need to prevent those merges for @keyframes
30 TODO: need to be checked */
31 node.block.children.each(function(rule) {
32 rule.prelude.children.each(function(simpleselector) {
33 simpleselector.compareMarker = simpleselector.id;
34 });
35 });
36 }
37 }
38 });
39
40 return {
41 declaration: markDeclaration
42 };
43};
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