45 lines
1.2 KiB
TypeScript
45 lines
1.2 KiB
TypeScript
import loaderUtils from 'loader-utils'
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import path from 'path'
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import webpack from 'webpack'
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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 =
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relativePath.endsWith('index.module.css') &&
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relativePath !== 'pages/index.module.css'
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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 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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}
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