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declare const __turbopack_external_require__: (
id: string,
thunk: () => any,
esm?: boolean
) => any
import type { Processor } from 'postcss'
// @ts-ignore
import postcss from '@vercel/turbopack/postcss'
// @ts-ignore
import importedConfig from 'CONFIG'
import { getReadEnvVariables, toPath, type TransformIpc } from './transforms'
let processor: Processor | undefined
export const init = async (ipc: TransformIpc) => {
let config = importedConfig
if (typeof config === 'function') {
config = await config({ env: 'development' })
}
if (typeof config === 'undefined') {
throw new Error(
'PostCSS config is undefined (make sure to export an function or object from config file)'
)
}
let plugins: any[]
if (Array.isArray(config.plugins)) {
plugins = config.plugins.map((plugin: [string, any] | string | any) => {
if (Array.isArray(plugin)) {
return plugin
} else if (typeof plugin === 'string') {
return [plugin, {}]
} else {
return plugin
}
})
} else if (typeof config.plugins === 'object') {
plugins = Object.entries(config.plugins).filter(([, options]) => options)
} else {
plugins = []
}
const loadedPlugins = plugins.map((plugin) => {
if (Array.isArray(plugin)) {
const [arg, options] = plugin
let pluginFactory = arg
if (typeof pluginFactory === 'string') {
pluginFactory = require(/* turbopackIgnore: true */ pluginFactory)
}
if (pluginFactory.default) {
pluginFactory = pluginFactory.default
}
return pluginFactory(options)
}
return plugin
})
processor = postcss(loadedPlugins)
}
export default async function transform(
ipc: TransformIpc,
cssContent: string,
name: string,
sourceMap: boolean
) {
const { css, map, messages } = await processor!.process(cssContent, {
from: name,
to: name,
map: sourceMap
? {
inline: false,
annotation: false,
}
: undefined,
})
const assets = []
const filePaths: string[] = []
const buildFilePaths: string[] = []
const directories: Array<[string, string]> = []
for (const msg of messages) {
switch (msg.type) {
case 'asset':
assets.push({
file: msg.file,
content: msg.content,
sourceMap: !sourceMap
? undefined
: typeof msg.sourceMap === 'string'
? msg.sourceMap
: JSON.stringify(msg.sourceMap),
// There is also an info field, which we currently ignore
})
break
case 'dependency':
case 'missing-dependency':
filePaths.push(toPath(msg.file))
break
case 'build-dependency':
buildFilePaths.push(toPath(msg.file))
break
case 'dir-dependency':
directories.push([toPath(msg.dir), msg.glob])
break
case 'context-dependency':
directories.push([toPath(msg.dir), '**'])
break
default:
// TODO: do we need to do anything here?
break
}
}
ipc.sendInfo({
type: 'dependencies',
filePaths,
directories,
buildFilePaths,
envVariables: getReadEnvVariables(),
})
return {
css,
map: sourceMap ? JSON.stringify(map) : undefined,
assets,
}
}
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