index.js
4.19 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
'use strict';
const valueParser = require('postcss-value-parser');
const {
normalizeGridAutoFlow,
normalizeGridColumnRowGap,
normalizeGridColumnRow,
} = require('./rules/grid');
// rules
const animation = require('./rules/animation');
const border = require('./rules/border');
const boxShadow = require('./rules/boxShadow');
const flexFlow = require('./rules/flexFlow');
const transition = require('./rules/transition');
const listStyle = require('./rules/listStyle');
const column = require('./rules/columns');
const vendorUnprefixed = require('./lib/vendorUnprefixed.js');
/** @type {[string, (parsed: valueParser.ParsedValue) => string][]} */
const borderRules = [
['border', border],
['border-block', border],
['border-inline', border],
['border-block-end', border],
['border-block-start', border],
['border-inline-end', border],
['border-inline-start', border],
['border-top', border],
['border-right', border],
['border-bottom', border],
['border-left', border],
];
/** @type {[string, (parsed: valueParser.ParsedValue) => string | string[] | valueParser.ParsedValue][]} */
const grid = [
['grid-auto-flow', normalizeGridAutoFlow],
['grid-column-gap', normalizeGridColumnRowGap], // normal | <length-percentage>
['grid-row-gap', normalizeGridColumnRowGap], // normal | <length-percentage>
['grid-column', normalizeGridColumnRow], // <grid-line>+
['grid-row', normalizeGridColumnRow], // <grid-line>+
['grid-row-start', normalizeGridColumnRow], // <grid-line>
['grid-row-end', normalizeGridColumnRow], // <grid-line>
['grid-column-start', normalizeGridColumnRow], // <grid-line>
['grid-column-end', normalizeGridColumnRow], // <grid-line>
];
/** @type {[string, (parsed: valueParser.ParsedValue) => string | valueParser.ParsedValue][]} */
const columnRules = [
['column-rule', border],
['columns', column],
];
/** @type {Map<string, ((parsed: valueParser.ParsedValue) => string | string[] | valueParser.ParsedValue)>} */
const rules = new Map([
['animation', animation],
['outline', border],
['box-shadow', boxShadow],
['flex-flow', flexFlow],
['list-style', listStyle],
['transition', transition],
...borderRules,
...grid,
...columnRules,
]);
const variableFunctions = new Set(['var', 'env', 'constant']);
/**
* @param {valueParser.Node} node
* @return {boolean}
*/
function isVariableFunctionNode(node) {
if (node.type !== 'function') {
return false;
}
return variableFunctions.has(node.value.toLowerCase());
}
/**
* @param {valueParser.ParsedValue} parsed
* @return {boolean}
*/
function shouldAbort(parsed) {
let abort = false;
parsed.walk((node) => {
if (
node.type === 'comment' ||
isVariableFunctionNode(node) ||
(node.type === 'word' && node.value.includes(`___CSS_LOADER_IMPORT___`))
) {
abort = true;
return false;
}
});
return abort;
}
/**
* @param {import('postcss').Declaration} decl
* @return {string}
*/
function getValue(decl) {
let { value, raws } = decl;
if (raws && raws.value && raws.value.raw) {
value = raws.value.raw;
}
return value;
}
/**
* @type {import('postcss').PluginCreator<void>}
* @return {import('postcss').Plugin}
*/
function pluginCreator() {
return {
postcssPlugin: 'postcss-ordered-values',
prepare() {
const cache = new Map();
return {
OnceExit(css) {
css.walkDecls((decl) => {
const lowerCasedProp = decl.prop.toLowerCase();
const normalizedProp = vendorUnprefixed(lowerCasedProp);
const processor = rules.get(normalizedProp);
if (!processor) {
return;
}
const value = getValue(decl);
if (cache.has(value)) {
decl.value = cache.get(value);
return;
}
const parsed = valueParser(value);
if (parsed.nodes.length < 2 || shouldAbort(parsed)) {
cache.set(value, value);
return;
}
const result = processor(parsed);
decl.value = result.toString();
cache.set(value, result.toString());
});
},
};
},
};
}
pluginCreator.postcss = true;
module.exports = pluginCreator;