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feat: Configuration for obfuscate/minify css module's local ident names #9223

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feat: Configuration for obfuscate/minify css module's local ident names #9223

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f642660
feat(react-scripts): Provide way to obfuscate css modules ident names.
zamarawka Jun 26, 2020
60e922c
docs: Add description for css ident obfuscation.
zamarawka Jun 26, 2020
d17c915
Merge branch 'master' into feat/css-loacal-ident
zamarawka Apr 13, 2021
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feat(react-scripts): Provide way to obfuscate css modules ident names.
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@zamarawka
zamarawka committed Jun 26, 2020
commit f642660e97d7786bed4d129a19c6a9834e2548df
15 changes: 9 additions & 6 deletions packages/react-scripts/config/webpack.config.js
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,8 @@ const appPackageJson = require(paths.appPackageJson);
// Source maps are resource heavy and can cause out of memory issue for large source files.
const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';

const shouldUseLocalIdentName = process.env.CSS_LOCAL_IDENT_NAME !== 'false';

const webpackDevClientEntry = require.resolve(
'react-dev-utils/webpackHotDevClient'
);
Expand Down Expand Up @@ -147,6 +149,11 @@ module.exports = function (webpackEnv) {
return loaders;
};

const getCssModulesIdentNameConfig = () =>
shouldUseLocalIdentName
? { getLocalIdent: getCSSModuleLocalIdent }
: { localIdentName: '[hash:base64]' };

return {
mode: isEnvProduction ? 'production' : isEnvDevelopment && 'development',
// Stop compilation early in production
Expand Down Expand Up @@ -518,9 +525,7 @@ module.exports = function (webpackEnv) {
sourceMap: isEnvProduction
? shouldUseSourceMap
: isEnvDevelopment,
modules: {
getLocalIdent: getCSSModuleLocalIdent,
},
modules: getCssModulesIdentNameConfig(),
}),
},
// Opt-in support for SASS (using .scss or .sass extensions).
Expand Down Expand Up @@ -554,9 +559,7 @@ module.exports = function (webpackEnv) {
sourceMap: isEnvProduction
? shouldUseSourceMap
: isEnvDevelopment,
modules: {
getLocalIdent: getCSSModuleLocalIdent,
},
modules: getCssModulesIdentNameConfig(),
},
'sass-loader'
),
Expand Down