Next.js implements a sophisticated server-side HMR system that coordinates multiple webpack compilers, handles server component updates, and manages complex caching mechanisms. This document provides a comprehensive analysis of the server-side HMR architecture.
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The ExportInfoDependency is a critical component in rspack's export tracking system that provides runtime access to export metadata during code generation. It acts as a bridge between the analysis phase (where export usage information is collected) and the runtime phase (where this information is used for optimizations).
TL;DR: We tested Advanced Dictionary Compression (ADC) technology on real-world JavaScript files (4MB each). The results demonstrate significant improvements:
This document provides a comprehensive specification for the Hot Module Replacement (HMR) runtime, specifically tailored for a Node.js environment where update chunks are loaded from the filesystem and executed within the current V8 context using the vm module. This runtime enables developers to update modules in a running Node.js application without a full server restart, significantly speeding up development workflows.
The primary purpose of this HMR runtime is to:
| // Utility functions that would only be used by newFeature | |
| function formatMessage(message) { | |
| return `[NEW] ${message}`; | |
| } | |
| function validateFeature() { | |
| return true; | |
| } | |
| function logFeatureUsage(featureName) { |
| { | |
| "tools": [ | |
| { | |
| "type": "function", | |
| "function": { | |
| "name": "codebase_search", | |
| "description": "Find snippets of code from the codebase most relevant to the search query.\nThis is a semantic search tool, so the query should ask for something semantically matching what is needed.\nIf it makes sense to only search in particular directories, please specify them in the target_directories field.\nUnless there is a clear reason to use your own search query, please just reuse the user's exact query with their wording.\nTheir exact wording/phrasing can often be helpful for the semantic search query. Keeping the same exact question format can also be helpful.", | |
| "parameters": { | |
| "type": "object", | |
| "properties": { |
| const HtmlWebpackPlugin = require('html-webpack-plugin'); | |
| const {ModuleFederationPlugin} = require('webpack').container; | |
| const {RuntimeGlobals, RuntimeModule} = require('webpack'); | |
| const path = require('path'); | |
| const deps = require('./package.json').dependencies; | |
| class Testing123RuntimeModule extends RuntimeModule { | |
| constructor() { | |
| super('testing123', RuntimeModule.STAGE_BASIC + 1); | |
| } |
| /******/ // load script equivalent for server side | |
| /******/ __webpack_require__.l = function(url,callback,chunkId) { | |
| /******/ if(!global.__remote_scope__) { | |
| /******/ // create a global scope for container, similar to how remotes are set on window in the browser | |
| /******/ global.__remote_scope__ = { | |
| /******/ _config: {}, | |
| /******/ } | |
| /******/ } | |
| /******/ | |
| /******/ function executeLoad(url, callback, name) { |
| import { injectScript } from '@module-federation/utilities'; | |
| // example of dynamic remote import on server and client | |
| const isServer = typeof window === 'undefined'; | |
| //could also use | |
| // getModule({ | |
| // remoteContainer: { | |
| // global: 'app2', | |
| // url: 'http://localhost:3002/remoteEntry.js', | |
| // }, | |
| // modulePath: './sample' |
| function recursiveMap(children, fn) { | |
| return React.Children.map(children, (child) => { | |
| if (!React.isValidElement(child)) { | |
| return child; | |
| } | |
| if (child.props.children) { | |
| child = React.cloneElement(child, { | |
| children: recursiveMap(child.props.children, fn), | |
| }); |