source: trip-planner-front/node_modules/postcss-dir-pseudo-class/index.cjs.js@ 6a3a178

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

initial commit

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1'use strict';
2
3function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
4
5var postcss = _interopDefault(require('postcss'));
6var selectorParser = _interopDefault(require('postcss-selector-parser'));
7
8var index = postcss.plugin('postcss-dir-pseudo-class', opts => {
9 const dir = Object(opts).dir;
10 const preserve = Boolean(Object(opts).preserve);
11 return root => {
12 // walk rules using the :dir pseudo-class
13 root.walkRules(/:dir\([^\)]*\)/, rule => {
14 let currentRule = rule; // conditionally preserve the original rule
15
16 if (preserve) {
17 currentRule = rule.cloneBefore();
18 } // update the rule selector
19
20
21 currentRule.selector = selectorParser(selectors => {
22 // for each (comma separated) selector
23 selectors.nodes.forEach(selector => {
24 // walk all selector nodes that are :dir pseudo-classes
25 selector.walk(node => {
26 if ('pseudo' === node.type && ':dir' === node.value) {
27 // previous and next selector nodes
28 const prev = node.prev();
29 const next = node.next();
30 const prevIsSpaceCombinator = prev && prev.type && 'combinator' === prev.type && ' ' === prev.value;
31 const nextIsSpaceCombinator = next && next.type && 'combinator' === next.type && ' ' === next.value; // preserve the selector tree
32
33 if (prevIsSpaceCombinator && (nextIsSpaceCombinator || !next)) {
34 node.replaceWith(selectorParser.universal());
35 } else {
36 node.remove();
37 } // conditionally prepend a combinator before inserting the [dir] attribute
38
39
40 const first = selector.nodes[0];
41 const firstIsSpaceCombinator = first && 'combinator' === first.type && ' ' === first.value;
42 const firstIsHtml = first && 'tag' === first.type && 'html' === first.value;
43 const firstIsRoot = first && 'pseudo' === first.type && ':root' === first.value;
44
45 if (first && !firstIsHtml && !firstIsRoot && !firstIsSpaceCombinator) {
46 selector.prepend(selectorParser.combinator({
47 value: ' '
48 }));
49 } // value of the :dir pseudo-class
50
51
52 const value = node.nodes.toString(); // whether :dir matches the presumed direction
53
54 const isdir = dir === value; // [dir] attribute
55
56 const dirAttr = selectorParser.attribute({
57 attribute: 'dir',
58 operator: '=',
59 quoteMark: '"',
60 value: `"${value}"`
61 }); // not[dir] attribute
62
63 const notDirAttr = selectorParser.pseudo({
64 value: `${firstIsHtml || firstIsRoot ? '' : 'html'}:not`
65 });
66 notDirAttr.append(selectorParser.attribute({
67 attribute: 'dir',
68 operator: '=',
69 quoteMark: '"',
70 value: `"${'ltr' === value ? 'rtl' : 'ltr'}"`
71 }));
72
73 if (isdir) {
74 // if the direction is presumed
75 if (firstIsHtml) {
76 // insert :root after html tag
77 selector.insertAfter(first, notDirAttr);
78 } else {
79 // prepend :root
80 selector.prepend(notDirAttr);
81 }
82 } else if (firstIsHtml) {
83 // otherwise, insert dir attribute after html tag
84 selector.insertAfter(first, dirAttr);
85 } else {
86 // otherwise, prepend the dir attribute
87 selector.prepend(dirAttr);
88 }
89 }
90 });
91 });
92 }).processSync(currentRule.selector);
93 });
94 };
95});
96
97module.exports = index;
98//# sourceMappingURL=index.cjs.js.map
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