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-rw-r--r--config/webpackDevServer.config.js104
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diff --git a/config/webpackDevServer.config.js b/config/webpackDevServer.config.js
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-'use strict';
-
-const errorOverlayMiddleware = require('react-dev-utils/errorOverlayMiddleware');
-const evalSourceMapMiddleware = require('react-dev-utils/evalSourceMapMiddleware');
-const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware');
-const ignoredFiles = require('react-dev-utils/ignoredFiles');
-const paths = require('./paths');
-const fs = require('fs');
-
-const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
-const host = process.env.HOST || '0.0.0.0';
-
-module.exports = function(proxy, allowedHost) {
- return {
- // WebpackDevServer 2.4.3 introduced a security fix that prevents remote
- // websites from potentially accessing local content through DNS rebinding:
- // https://github.com/webpack/webpack-dev-server/issues/887
- // https://medium.com/webpack/webpack-dev-server-middleware-security-issues-1489d950874a
- // However, it made several existing use cases such as development in cloud
- // environment or subdomains in development significantly more complicated:
- // https://github.com/facebook/create-react-app/issues/2271
- // https://github.com/facebook/create-react-app/issues/2233
- // While we're investigating better solutions, for now we will take a
- // compromise. Since our WDS configuration only serves files in the `public`
- // folder we won't consider accessing them a vulnerability. However, if you
- // use the `proxy` feature, it gets more dangerous because it can expose
- // remote code execution vulnerabilities in backends like Django and Rails.
- // So we will disable the host check normally, but enable it if you have
- // specified the `proxy` setting. Finally, we let you override it if you
- // really know what you're doing with a special environment variable.
- disableHostCheck:
- !proxy || process.env.DANGEROUSLY_DISABLE_HOST_CHECK === 'true',
- // Enable gzip compression of generated files.
- compress: true,
- // Silence WebpackDevServer's own logs since they're generally not useful.
- // It will still show compile warnings and errors with this setting.
- clientLogLevel: 'none',
- // By default WebpackDevServer serves physical files from current directory
- // in addition to all the virtual build products that it serves from memory.
- // This is confusing because those files won’t automatically be available in
- // production build folder unless we copy them. However, copying the whole
- // project directory is dangerous because we may expose sensitive files.
- // Instead, we establish a convention that only files in `public` directory
- // get served. Our build script will copy `public` into the `build` folder.
- // In `index.html`, you can get URL of `public` folder with %PUBLIC_URL%:
- // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
- // In JavaScript code, you can access it with `process.env.PUBLIC_URL`.
- // Note that we only recommend to use `public` folder as an escape hatch
- // for files like `favicon.ico`, `manifest.json`, and libraries that are
- // for some reason broken when imported through Webpack. If you just want to
- // use an image, put it in `src` and `import` it from JavaScript instead.
- contentBase: paths.appPublic,
- // By default files from `contentBase` will not trigger a page reload.
- watchContentBase: true,
- // Enable hot reloading server. It will provide /sockjs-node/ endpoint
- // for the WebpackDevServer client so it can learn when the files were
- // updated. The WebpackDevServer client is included as an entry point
- // in the Webpack development configuration. Note that only changes
- // to CSS are currently hot reloaded. JS changes will refresh the browser.
- hot: true,
- // It is important to tell WebpackDevServer to use the same "root" path
- // as we specified in the config. In development, we always serve from /.
- publicPath: '/',
- // WebpackDevServer is noisy by default so we emit custom message instead
- // by listening to the compiler events with `compiler.hooks[...].tap` calls above.
- quiet: true,
- // Reportedly, this avoids CPU overload on some systems.
- // https://github.com/facebook/create-react-app/issues/293
- // src/node_modules is not ignored to support absolute imports
- // https://github.com/facebook/create-react-app/issues/1065
- watchOptions: {
- ignored: ignoredFiles(paths.appSrc),
- },
- // Enable HTTPS if the HTTPS environment variable is set to 'true'
- https: protocol === 'https',
- host,
- overlay: false,
- historyApiFallback: {
- // Paths with dots should still use the history fallback.
- // See https://github.com/facebook/create-react-app/issues/387.
- disableDotRule: true,
- },
- public: allowedHost,
- proxy,
- before(app, server) {
- if (fs.existsSync(paths.proxySetup)) {
- // This registers user provided middleware for proxy reasons
- require(paths.proxySetup)(app);
- }
-
- // This lets us fetch source contents from webpack for the error overlay
- app.use(evalSourceMapMiddleware(server));
- // This lets us open files from the runtime error overlay.
- app.use(errorOverlayMiddleware());
-
- // This service worker file is effectively a 'no-op' that will reset any
- // previous service worker registered for the same host:port combination.
- // We do this in development to avoid hitting the production cache if
- // it used the same host and port.
- // https://github.com/facebook/create-react-app/issues/2272#issuecomment-302832432
- app.use(noopServiceWorkerMiddleware());
- },
- };
-};