005a8abe39
This picks up on the inlining work in https://github.com/vercel/next.js/pull/20598 to also include webpack loader inlining optimizations. This includes: * The dependencies of sass-loader * resolve-url-loader And for added benefit: * babel-plugin-transform-define * babel-plugin-transform-react-remove-prop-types style-loader and css-loader didn't inline easily. Perhaps we can come back to these ones.
53 lines
1.7 KiB
TypeScript
53 lines
1.7 KiB
TypeScript
import loaderUtils from 'next/dist/compiled/loader-utils'
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import path from 'path'
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import { webpack } from 'next/dist/compiled/webpack/webpack'
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const regexLikeIndexModule = /(?<!pages[\\/])index\.module\.(scss|sass|css)$/
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export function getCssModuleLocalIdent(
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context: webpack.loader.LoaderContext,
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_: any,
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exportName: string,
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options: object
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) {
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const relativePath = path
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.relative(context.rootContext, context.resourcePath)
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.replace(/\\+/g, '/')
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// Generate a more meaningful name (parent folder) when the user names the
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// file `index.module.css`.
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const fileNameOrFolder = regexLikeIndexModule.test(relativePath)
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? '[folder]'
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: '[name]'
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// Generate a hash to make the class name unique.
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const hash = loaderUtils.getHashDigest(
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Buffer.from(`filePath:${relativePath}#className:${exportName}`),
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'md5',
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'base64',
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5
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)
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// Have webpack interpolate the `[folder]` or `[name]` to its real value.
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return (
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loaderUtils
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.interpolateName(
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context,
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fileNameOrFolder + '_' + exportName + '__' + hash,
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options
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)
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.replace(
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// Webpack name interpolation returns `about.module_root__2oFM9` for
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// `.root {}` inside a file named `about.module.css`. Let's simplify
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// this.
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/\.module_/,
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'_'
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)
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// Replace invalid symbols with underscores instead of escaping
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// https://mathiasbynens.be/notes/css-escapes#identifiers-strings
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.replace(/[^a-zA-Z0-9-_]/g, '_')
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// "they cannot start with a digit, two hyphens, or a hyphen followed by a digit [sic]"
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// https://www.w3.org/TR/CSS21/syndata.html#characters
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.replace(/^(\d|--|-\d)/, '__$1')
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)
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}
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