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368 lines
14 KiB
368 lines
14 KiB
2 years ago
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const { validate: validateOptions } = require('schema-utils');
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const { getRefreshGlobalScope, getWebpackVersion } = require('./globals');
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const {
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getAdditionalEntries,
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getIntegrationEntry,
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getRefreshGlobal,
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getSocketIntegration,
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injectRefreshEntry,
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injectRefreshLoader,
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makeRefreshRuntimeModule,
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normalizeOptions,
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} = require('./utils');
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const schema = require('./options.json');
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class ReactRefreshPlugin {
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/**
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* @param {import('./types').ReactRefreshPluginOptions} [options] Options for react-refresh-plugin.
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*/
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constructor(options = {}) {
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validateOptions(schema, options, {
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name: 'React Refresh Plugin',
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baseDataPath: 'options',
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});
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/**
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* @readonly
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* @type {import('./types').NormalizedPluginOptions}
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*/
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this.options = normalizeOptions(options);
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}
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/**
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* Applies the plugin.
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* @param {import('webpack').Compiler} compiler A webpack compiler object.
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* @returns {void}
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*/
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apply(compiler) {
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// Skip processing in non-development mode, but allow manual force-enabling
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if (
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// Webpack do not set process.env.NODE_ENV, so we need to check for mode.
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// Ref: https://github.com/webpack/webpack/issues/7074
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(compiler.options.mode !== 'development' ||
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// We also check for production process.env.NODE_ENV,
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// in case it was set and mode is non-development (e.g. 'none')
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(process.env.NODE_ENV && process.env.NODE_ENV === 'production')) &&
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!this.options.forceEnable
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) {
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return;
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}
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const webpackVersion = getWebpackVersion(compiler);
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const logger = compiler.getInfrastructureLogger(this.constructor.name);
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// Get Webpack imports from compiler instance (if available) -
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// this allow mono-repos to use different versions of Webpack without conflicts.
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const webpack = compiler.webpack || require('webpack');
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const {
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DefinePlugin,
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EntryDependency,
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EntryPlugin,
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ModuleFilenameHelpers,
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NormalModule,
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ProvidePlugin,
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RuntimeGlobals,
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Template,
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} = webpack;
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// Inject react-refresh context to all Webpack entry points.
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// This should create `EntryDependency` objects when available,
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// and fallback to patching the `entry` object for legacy workflows.
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const addEntries = getAdditionalEntries({
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devServer: compiler.options.devServer,
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options: this.options,
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});
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if (EntryPlugin) {
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// Prepended entries does not care about injection order,
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// so we can utilise EntryPlugin for simpler logic.
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addEntries.prependEntries.forEach((entry) => {
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new EntryPlugin(compiler.context, entry, { name: undefined }).apply(compiler);
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});
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const integrationEntry = getIntegrationEntry(this.options.overlay.sockIntegration);
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const socketEntryData = [];
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compiler.hooks.make.tap(
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{ name: this.constructor.name, stage: Number.POSITIVE_INFINITY },
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(compilation) => {
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// Exhaustively search all entries for `integrationEntry`.
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// If found, mark those entries and the index of `integrationEntry`.
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for (const [name, entryData] of compilation.entries.entries()) {
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const index = entryData.dependencies.findIndex(
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(dep) => dep.request && dep.request.includes(integrationEntry)
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);
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if (index !== -1) {
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socketEntryData.push({ name, index });
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}
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}
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}
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);
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// Overlay entries need to be injected AFTER integration's entry,
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// so we will loop through everything in `finishMake` instead of `make`.
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// This ensures we can traverse all entry points and inject stuff with the correct order.
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addEntries.overlayEntries.forEach((entry, idx, arr) => {
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compiler.hooks.finishMake.tapPromise(
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{ name: this.constructor.name, stage: Number.MIN_SAFE_INTEGER + (arr.length - idx - 1) },
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(compilation) => {
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// Only hook into the current compiler
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if (compilation.compiler !== compiler) {
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return Promise.resolve();
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}
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const injectData = socketEntryData.length ? socketEntryData : [{ name: undefined }];
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return Promise.all(
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injectData.map(({ name, index }) => {
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return new Promise((resolve, reject) => {
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const options = { name };
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const dep = EntryPlugin.createDependency(entry, options);
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compilation.addEntry(compiler.context, dep, options, (err) => {
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if (err) return reject(err);
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// If the entry is not a global one,
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// and we have registered the index for integration entry,
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// we will reorder all entry dependencies to our desired order.
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// That is, to have additional entries DIRECTLY behind integration entry.
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if (name && typeof index !== 'undefined') {
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const entryData = compilation.entries.get(name);
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entryData.dependencies.splice(
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index + 1,
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0,
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entryData.dependencies.splice(entryData.dependencies.length - 1, 1)[0]
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);
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}
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resolve();
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});
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});
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})
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).then(() => {});
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}
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);
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});
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} else {
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compiler.options.entry = injectRefreshEntry(compiler.options.entry, addEntries);
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}
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// Inject necessary modules and variables to bundle's global scope
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const refreshGlobal = getRefreshGlobalScope(RuntimeGlobals || {});
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/** @type {Record<string, string | boolean>}*/
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const definedModules = {
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// Mapping of react-refresh globals to Webpack runtime globals
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$RefreshReg$: `${refreshGlobal}.register`,
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$RefreshSig$: `${refreshGlobal}.signature`,
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'typeof $RefreshReg$': 'function',
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'typeof $RefreshSig$': 'function',
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// Library mode
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__react_refresh_library__: JSON.stringify(
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Template.toIdentifier(
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this.options.library ||
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compiler.options.output.uniqueName ||
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compiler.options.output.library
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)
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),
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};
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/** @type {Record<string, string>} */
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const providedModules = {
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__react_refresh_utils__: require.resolve('./runtime/RefreshUtils'),
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};
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if (this.options.overlay === false) {
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// Stub errorOverlay module so their calls can be erased
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definedModules.__react_refresh_error_overlay__ = false;
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definedModules.__react_refresh_polyfill_url__ = false;
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definedModules.__react_refresh_socket__ = false;
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} else {
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definedModules.__react_refresh_polyfill_url__ = this.options.overlay.useURLPolyfill || false;
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if (this.options.overlay.module) {
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providedModules.__react_refresh_error_overlay__ = require.resolve(
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this.options.overlay.module
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);
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}
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if (this.options.overlay.sockIntegration) {
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providedModules.__react_refresh_socket__ = getSocketIntegration(
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this.options.overlay.sockIntegration
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);
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}
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}
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new DefinePlugin(definedModules).apply(compiler);
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new ProvidePlugin(providedModules).apply(compiler);
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const match = ModuleFilenameHelpers.matchObject.bind(undefined, this.options);
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let loggedHotWarning = false;
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compiler.hooks.compilation.tap(
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this.constructor.name,
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(compilation, { normalModuleFactory }) => {
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// Only hook into the current compiler
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if (compilation.compiler !== compiler) {
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return;
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}
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// Tap into version-specific compilation hooks
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switch (webpackVersion) {
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case 4: {
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const outputOptions = compilation.mainTemplate.outputOptions;
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compilation.mainTemplate.hooks.require.tap(
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this.constructor.name,
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// Constructs the module template for react-refresh
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(source, chunk, hash) => {
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// Check for the output filename
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// This is to ensure we are processing a JS-related chunk
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let filename = outputOptions.filename;
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if (typeof filename === 'function') {
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// Only usage of the `chunk` property is documented by Webpack.
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// However, some internal Webpack plugins uses other properties,
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// so we also pass them through to be on the safe side.
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filename = filename({
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contentHashType: 'javascript',
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chunk,
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hash,
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});
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}
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// Check whether the current compilation is outputting to JS,
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// since other plugins can trigger compilations for other file types too.
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// If we apply the transform to them, their compilation will break fatally.
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// One prominent example of this is the HTMLWebpackPlugin.
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// If filename is falsy, something is terribly wrong and there's nothing we can do.
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if (!filename || !filename.includes('.js')) {
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return source;
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}
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// Split template source code into lines for easier processing
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const lines = source.split('\n');
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// Webpack generates this line when the MainTemplate is called
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const moduleInitializationLineNumber = lines.findIndex((line) =>
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line.includes('modules[moduleId].call(')
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);
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// Unable to find call to module execution -
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// this happens if the current module does not call MainTemplate.
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// In this case, we will return the original source and won't mess with it.
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if (moduleInitializationLineNumber === -1) {
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return source;
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}
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const moduleInterceptor = Template.asString([
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`${refreshGlobal}.setup(moduleId);`,
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'try {',
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Template.indent(lines[moduleInitializationLineNumber]),
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'} finally {',
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Template.indent(`${refreshGlobal}.cleanup(moduleId);`),
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'}',
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]);
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return Template.asString([
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...lines.slice(0, moduleInitializationLineNumber),
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'',
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outputOptions.strictModuleExceptionHandling
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? Template.indent(moduleInterceptor)
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: moduleInterceptor,
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'',
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...lines.slice(moduleInitializationLineNumber + 1, lines.length),
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]);
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}
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);
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compilation.mainTemplate.hooks.requireExtensions.tap(
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this.constructor.name,
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// Setup react-refresh globals as extensions to Webpack's require function
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(source) => {
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return Template.asString([source, '', getRefreshGlobal(Template)]);
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}
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);
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normalModuleFactory.hooks.afterResolve.tap(
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this.constructor.name,
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// Add react-refresh loader to process files that matches specified criteria
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(data) => {
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return injectRefreshLoader(data, {
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match,
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options: { const: false, esModule: false },
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});
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}
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);
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compilation.hooks.normalModuleLoader.tap(
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// `Number.POSITIVE_INFINITY` ensures this check will run only after all other taps
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{ name: this.constructor.name, stage: Number.POSITIVE_INFINITY },
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// Check for existence of the HMR runtime -
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// it is the foundation to this plugin working correctly
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(context) => {
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if (!context.hot && !loggedHotWarning) {
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logger.warn(
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[
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'Hot Module Replacement (HMR) is not enabled!',
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'React Refresh requires HMR to function properly.',
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].join(' ')
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);
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loggedHotWarning = true;
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}
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}
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);
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break;
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}
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case 5: {
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// Set factory for EntryDependency which is used to initialise the module
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compilation.dependencyFactories.set(EntryDependency, normalModuleFactory);
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const ReactRefreshRuntimeModule = makeRefreshRuntimeModule(webpack);
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compilation.hooks.additionalTreeRuntimeRequirements.tap(
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this.constructor.name,
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// Setup react-refresh globals with a Webpack runtime module
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(chunk, runtimeRequirements) => {
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runtimeRequirements.add(RuntimeGlobals.interceptModuleExecution);
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runtimeRequirements.add(RuntimeGlobals.moduleCache);
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runtimeRequirements.add(refreshGlobal);
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compilation.addRuntimeModule(chunk, new ReactRefreshRuntimeModule());
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}
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);
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normalModuleFactory.hooks.afterResolve.tap(
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this.constructor.name,
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// Add react-refresh loader to process files that matches specified criteria
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(resolveData) => {
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injectRefreshLoader(resolveData.createData, {
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match,
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options: {
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const: compilation.runtimeTemplate.supportsConst(),
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esModule: this.options.esModule,
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},
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});
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}
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);
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NormalModule.getCompilationHooks(compilation).loader.tap(
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// `Infinity` ensures this check will run only after all other taps
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{ name: this.constructor.name, stage: Infinity },
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// Check for existence of the HMR runtime -
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// it is the foundation to this plugin working correctly
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|
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(context) => {
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if (!context.hot && !loggedHotWarning) {
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logger.warn(
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[
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|
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'Hot Module Replacement (HMR) is not enabled!',
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'React Refresh requires HMR to function properly.',
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].join(' ')
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);
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loggedHotWarning = true;
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}
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}
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);
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break;
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}
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default: {
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// Do nothing - this should be an impossible case
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}
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}
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}
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);
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}
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}
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module.exports.ReactRefreshPlugin = ReactRefreshPlugin;
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module.exports = ReactRefreshPlugin;
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