71 lines
2.3 KiB
TypeScript
71 lines
2.3 KiB
TypeScript
import { webpack } from 'next/dist/compiled/webpack/webpack'
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import { ConfigurationContext } from '../../../utils'
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import { getClientStyleLoader } from './client'
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import { cssFileResolve } from './file-resolve'
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import { getCssModuleLocalIdent } from './getCssModuleLocalIdent'
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export function getCssModuleLoader(
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ctx: ConfigurationContext,
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postcss: any,
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preProcessors: readonly webpack.RuleSetUseItem[] = []
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): webpack.RuleSetUseItem[] {
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const loaders: webpack.RuleSetUseItem[] = []
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if (ctx.isClient) {
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// Add appropriate development more or production mode style
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// loader
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loaders.push(
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getClientStyleLoader({
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hasAppDir: ctx.hasAppDir,
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isDevelopment: ctx.isDevelopment,
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assetPrefix: ctx.assetPrefix,
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})
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)
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}
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// Resolve CSS `@import`s and `url()`s
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loaders.push({
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loader: require.resolve('../../../../loaders/css-loader/src'),
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options: {
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postcss,
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importLoaders: 1 + preProcessors.length,
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// Use CJS mode for backwards compatibility:
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esModule: false,
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url: (url: string, resourcePath: string) =>
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cssFileResolve(url, resourcePath, ctx.experimental.urlImports),
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import: (url: string, _: any, resourcePath: string) =>
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cssFileResolve(url, resourcePath, ctx.experimental.urlImports),
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modules: {
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// Do not transform class names (CJS mode backwards compatibility):
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exportLocalsConvention: 'asIs',
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// Server-side (Node.js) rendering support:
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exportOnlyLocals: ctx.isServer,
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// Disallow global style exports so we can code-split CSS and
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// not worry about loading order.
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mode: 'pure',
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// Generate a friendly production-ready name so it's
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// reasonably understandable. The same name is used for
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// development.
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// TODO: Consider making production reduce this to a single
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// character?
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getLocalIdent: getCssModuleLocalIdent,
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},
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},
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})
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// Compile CSS
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loaders.push({
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loader: require.resolve('../../../../loaders/postcss-loader/src'),
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options: {
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postcss,
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},
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})
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loaders.push(
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// Webpack loaders run like a stack, so we need to reverse the natural
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// order of preprocessors.
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...preProcessors.slice().reverse()
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)
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return loaders
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}
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