/
index.ts
136 lines (121 loc) · 4.27 KB
/
index.ts
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
import type { UserConfig, UserConfigDefaults } from '@unocss/core'
import type { ResolvedUnpluginOptions, UnpluginOptions } from 'unplugin'
import { createUnplugin } from 'unplugin'
import WebpackSources from 'webpack-sources'
import {
HASH_PLACEHOLDER_RE,
LAYER_MARK_ALL,
LAYER_PLACEHOLDER_RE,
createContext,
getHash,
getHashPlaceholder,
getLayerPlaceholder,
getPath,
resolveId,
resolveLayer,
} from '../../shared-integration/src'
export interface WebpackPluginOptions<Theme extends {} = {}> extends UserConfig<Theme> {}
const PLUGIN_NAME = 'unocss:webpack'
const UPDATE_DEBOUNCE = 10
export function defineConfig<Theme extends {}>(config: WebpackPluginOptions<Theme>) {
return config
}
export default function WebpackPlugin<Theme extends {}>(
configOrPath?: WebpackPluginOptions<Theme> | string,
defaults?: UserConfigDefaults,
) {
return createUnplugin(() => {
const context = createContext(configOrPath, defaults)
const { uno, tokens, filter, extract, onInvalidate } = context
let timer: any
onInvalidate(() => {
clearTimeout(timer)
timer = setTimeout(updateModules, UPDATE_DEBOUNCE)
})
const tasks: Promise<any>[] = []
const entries = new Set<string>()
const hashs = new Map<string, string>()
const plugin = <UnpluginOptions>{
name: 'unocss:webpack',
enforce: 'pre',
transformInclude(id) {
return filter('', id)
},
transform(code, id) {
tasks.push(extract(code, id))
return null
},
resolveId(id) {
const entry = resolveId(id)
if (entry) {
entries.add(entry)
return entry
}
},
// serve the placeholders in virtual module
load(id) {
let layer = resolveLayer(getPath(id))
if (!layer) {
const entry = resolveId(id)
if (entry)
layer = resolveLayer(entry)
}
const hash = hashs.get(id)
if (layer)
return (hash ? getHashPlaceholder(hash) : '') + getLayerPlaceholder(layer)
},
webpack(compiler) {
// replace the placeholders
compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
compilation.hooks.optimizeAssets.tapPromise(PLUGIN_NAME, async () => {
const files = Object.keys(compilation.assets)
await Promise.all(tasks)
const result = await uno.generate(tokens, { minify: true })
for (const file of files) {
let code = compilation.assets[file].source().toString()
let replaced = false
code = code.replace(HASH_PLACEHOLDER_RE, '')
code = code.replace(LAYER_PLACEHOLDER_RE, (_, quote, layer) => {
replaced = true
const css = layer === LAYER_MARK_ALL
? result.getLayers(undefined, Array.from(entries)
.map(i => resolveLayer(i)).filter((i): i is string => !!i))
: result.getLayer(layer) || ''
if (!quote)
return css
// the css is in a js file, escaping
let escaped = JSON.stringify(css).slice(1, -1)
// in `eval()`, escaping twice
if (quote === '\\"')
escaped = JSON.stringify(escaped).slice(1, -1)
return quote + escaped
})
if (replaced)
compilation.assets[file] = new WebpackSources.RawSource(code) as any
}
})
})
},
} as Required<ResolvedUnpluginOptions>
async function updateModules() {
if (!plugin.__vfsModules)
return
const result = await uno.generate(tokens)
Array.from(plugin.__vfsModules)
.forEach((id) => {
const path = id.slice(plugin.__virtualModulePrefix.length).replace(/\\/g, '/')
const layer = resolveLayer(path)
if (!layer)
return
const code = layer === LAYER_MARK_ALL
? result.getLayers(undefined, Array.from(entries)
.map(i => resolveLayer(i)).filter((i): i is string => !!i))
: result.getLayer(layer) || ''
const hash = getHash(code)
hashs.set(path, hash)
plugin.__vfs.writeModule(id, code)
})
}
return plugin
}).webpack()
}