4cd4fd28
 郭伟龙
feat: 初始化项目
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const postcss = require('postcss')
import { ProcessOptions, LazyResult } from 'postcss'
import trimPlugin from './stylePlugins/trim'
import scopedPlugin from './stylePlugins/scoped'
import {
processors,
StylePreprocessor,
StylePreprocessorResults
} from './stylePreprocessors'
import { cssVarsPlugin } from './cssVars'
export interface SFCStyleCompileOptions {
source: string
filename: string
id: string
map?: any
scoped?: boolean
trim?: boolean
preprocessLang?: string
preprocessOptions?: any
postcssOptions?: any
postcssPlugins?: any[]
isProd?: boolean
}
export interface SFCAsyncStyleCompileOptions extends SFCStyleCompileOptions {
isAsync?: boolean
}
export interface SFCStyleCompileResults {
code: string
map: any | void
rawResult: LazyResult | void
errors: string[]
}
export function compileStyle(
options: SFCStyleCompileOptions
): SFCStyleCompileResults {
return doCompileStyle({ ...options, isAsync: false })
}
export function compileStyleAsync(
options: SFCStyleCompileOptions
): Promise<SFCStyleCompileResults> {
return Promise.resolve(doCompileStyle({ ...options, isAsync: true }))
}
export function doCompileStyle(
options: SFCAsyncStyleCompileOptions
): SFCStyleCompileResults {
const {
filename,
id,
scoped = true,
trim = true,
isProd = false,
preprocessLang,
postcssOptions,
postcssPlugins
} = options
const preprocessor = preprocessLang && processors[preprocessLang]
const preProcessedSource = preprocessor && preprocess(options, preprocessor)
const map = preProcessedSource ? preProcessedSource.map : options.map
const source = preProcessedSource ? preProcessedSource.code : options.source
const plugins = (postcssPlugins || []).slice()
plugins.unshift(cssVarsPlugin({ id: id.replace(/^data-v-/, ''), isProd }))
if (trim) {
plugins.push(trimPlugin())
}
if (scoped) {
plugins.push(scopedPlugin(id))
}
const postCSSOptions: ProcessOptions = {
...postcssOptions,
to: filename,
from: filename
}
if (map) {
postCSSOptions.map = {
inline: false,
annotation: false,
prev: map
}
}
let result, code, outMap
const errors: any[] = []
if (preProcessedSource && preProcessedSource.errors.length) {
errors.push(...preProcessedSource.errors)
}
try {
result = postcss(plugins).process(source, postCSSOptions)
// In async mode, return a promise.
if (options.isAsync) {
return result
.then(
(result: LazyResult): SFCStyleCompileResults => ({
code: result.css || '',
map: result.map && result.map.toJSON(),
errors,
rawResult: result
})
)
.catch(
(error: Error): SFCStyleCompileResults => ({
code: '',
map: undefined,
errors: [...errors, error.message],
rawResult: undefined
})
)
}
// force synchronous transform (we know we only have sync plugins)
code = result.css
outMap = result.map
} catch (e) {
errors.push(e)
}
return {
code: code || ``,
map: outMap && outMap.toJSON(),
errors,
rawResult: result
}
}
function preprocess(
options: SFCStyleCompileOptions,
preprocessor: StylePreprocessor
): StylePreprocessorResults {
return preprocessor(
options.source,
options.map,
Object.assign(
{
filename: options.filename
},
options.preprocessOptions
)
)
}
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