processor.js
1.77 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
'use strict'
let NoWorkResult = require('./no-work-result')
let LazyResult = require('./lazy-result')
let Document = require('./document')
let Root = require('./root')
class Processor {
constructor(plugins = []) {
this.version = '8.4.29'
this.plugins = this.normalize(plugins)
}
normalize(plugins) {
let normalized = []
for (let i of plugins) {
if (i.postcss === true) {
i = i()
} else if (i.postcss) {
i = i.postcss
}
if (typeof i === 'object' && Array.isArray(i.plugins)) {
normalized = normalized.concat(i.plugins)
} else if (typeof i === 'object' && i.postcssPlugin) {
normalized.push(i)
} else if (typeof i === 'function') {
normalized.push(i)
} else if (typeof i === 'object' && (i.parse || i.stringify)) {
if (process.env.NODE_ENV !== 'production') {
throw new Error(
'PostCSS syntaxes cannot be used as plugins. Instead, please use ' +
'one of the syntax/parser/stringifier options as outlined ' +
'in your PostCSS runner documentation.'
)
}
} else {
throw new Error(i + ' is not a PostCSS plugin')
}
}
return normalized
}
process(css, opts = {}) {
if (
this.plugins.length === 0 &&
typeof opts.parser === 'undefined' &&
typeof opts.stringifier === 'undefined' &&
typeof opts.syntax === 'undefined'
) {
return new NoWorkResult(this, css, opts)
} else {
return new LazyResult(this, css, opts)
}
}
use(plugin) {
this.plugins = this.plugins.concat(this.normalize([plugin]))
return this
}
}
module.exports = Processor
Processor.default = Processor
Root.registerProcessor(Processor)
Document.registerProcessor(Processor)