proposal-top-level-await
webpack
proposal-top-level-await | webpack | |
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13 | 331 | |
1,005 | 64,178 | |
- | 0.2% | |
7.0 | 9.8 | |
almost 3 years ago | 4 days ago | |
HTML | JavaScript | |
Apache License 2.0 | MIT License |
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proposal-top-level-await
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Unveiling Breakthroughs Found In The State Of JS 2022 Survey
For more info about this feature, you can refer to the official proposal repo.
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Write program in assembly, decompile to TypeScript, convert to JavaScript, run in Node
This one is Stage 4 (complete)
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Open Source Adventures: Episode 29: Using D3 with old school tooling to visualize Russian Tank Losses
But browsers don't support top-level await yet. So we need to put it all inside as async function.
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Configuring CommonJS & ES Modules for Node.js
Note that ESM is not “backwards” compatible with CJS: a CJS module cannot require() an ES Module; it is possible to use a dynamic import (await import()), but this is likely not what consumers expect (and, unlike ESM, CJS does not support Top-Level Await).
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ES2022 Preview: 10 Exciting JavaScript Language Features From 2021
top-level await feature for ES modules
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How to save fetch JSON result to global variable?
That said, ES2022 does introduce a top-level await that works in the top level scope, but only in modules, not global scope. So if in a module this could work:
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Node v14.8+: Top Level Async Await
With the latest node version(s) (v14.8+), we should be able to rewrite the above code to something like this. proposal-top-level-await
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What is a practical example of using a Promise? These Youtube tutorials are bogus
Now a days, you'll likely mostly use async/await. The few cases where you'll need the Promise API (then()'s etc.) is when you're outside of an async function. With the new top-level await feature coming to modules, you wouldn't even need it outside of async functions in module code which will make its usage even less common.
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Basic import question
The await is in top level. The top level await proposal is in stage 3. Currently, the browser support is also not good enough but should work in latest version of the google chrome browser.
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Rust's async isn't f#@king colored!
There is a proposal for top-level await in JS. I'm guessing this would effectively kinda do the same thing? Or am I wrong there?
webpack
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Practical and Beginner friendly guide for speeding up your web-apps
There are various tools available that manage the size of bundled assets. We are going to use the example of a popular and widely used bundler named Webpack, and practically look at many of the optimization techniques it offers.
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Getting started with TiniJS framework
Homepage: https://webpack.js.org/
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Optimizing React Apps for Performance: A Comprehensive Guide
Click "Start Test." WebPageTest generates a comprehensive report with details about the loading process, including time to first byte (TTFB), page load time, and visual progress. ### Setting Benchmarks with Lighthouse Start with Lighthouse audits to maximize the performance of your React application. Evaluate Lighthouse's scores and suggestions with careful consideration. Next, set benchmarks that are in line with industry norms or customized to meet your unique performance goals. Lastly, pay close attention to the places in your application where it needs work. You can improve your React application's effectiveness by carefully following these procedures, which will guarantee that it satisfies the required performance requirements. ### Analyzing Performance Results with WebPageTest In order to fully evaluate your webpage's performance, launch WebPageTest with a variety of systems, simulating a variety of user scenarios. Examine the waterfall chart carefully to identify loading patterns and bottlenecks, which are essential for improving the user experience. To see the page's rendering process over time and do a thorough examination, use filmstrip views. To effectively assess performance, pay special attention to measures such as time to first byte (TTFB), start render time, and fully loaded time. Also, a better understanding of performance variances is made possible by comparing findings across various test designs, which helps make well-informed recommendations for improving webpage responsiveness and efficiency. ## Impact of third-party libraries on React app performance Third-party library integration can speed up development while improving functionality in our React application. It's crucial to consider the possible effects on performance, though. Because heavy or poorly optimized libraries might negatively impact the speed and usability of our application. ### Bundle Size Look at the distribution file sizes related to the library, and use tools such as Bundlephobia or Webpack Bundle Analyzer to fully evaluate their impact on your bundle size. This thorough analysis enables you to make well-informed decisions about whether to include the library, making sure that its contribution minimizes superfluous bulk in your application's codebase and is in line with your optimization goals. ### Network Requests Analyze how the third-party library affects network requests to maximize performance. Reduce the number of requests made overall by minimizing external dependencies. This will enhance the user experience and loading speeds. Select appropriate libraries, maximize asset delivery, and leverage code splitting to load components asynchronously. You may improve the effectiveness and responsiveness of your application and provide users with a better experience by cutting down on pointless network queries. ### Execution Time Examine the library's code for any possible performance problems or bottlenecks in order to analyze the runtime performance of the library. Look for places where the code may execute slowly or inefficiently. You may ensure smoother operation inside your application by identifying and addressing any areas of the library's implementation that may be impeding ideal performance by doing a comprehensive assessment. ### Code Splitting for Third-Party Libraries Implementing code splitting is an effective strategy to load third-party libraries only when they are required, reducing the initial page load time. Use dynamic imports to load the library lazily:
- Creating Nx Workspace with Eslint, Prettier and Husky Configuration
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Google: Angular and Wiz Are Merging
Thanks for the thorough answer!
I confess I wasn't thinking about a particular build tool. My recent experience has been with Vite, where I took a similar approach to what you describe, but haven't had to dig deep into bundle performance because that's not a bottleneck for our application. The last time I did deeper work on the subject was years ago with Webpack.
I thought Webpack at least did dead-code elimination before splitting things into chunks. If I'm reading this random GitHub issue[1] right (and the asker is also right), Webpack does partially behave as I expected, but the pre-chunking optimization pass occurs before things like constant expression evaluation.
[1] https://github.com/webpack/webpack/issues/16672
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JS Toolbox 2024: Bundlers and Test Frameworks
Webpack is a powerful and widely-used module bundler for JavaScript applications. It’s known for its flexibility and extensive plugin system, making it a popular tool in complex web development projects.
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Webpack: The Web Module Bundler
Thats all about Webpack Basic, there are lots of feature of webpack, You can check here: https://webpack.js.org/
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How to improve page load speed and response times: A comprehensive guide
Many web pages use CSS and JavaScript files to handle various features and styles. Each file, however, requires a separate HTTP request, which can slow down page loading. Concatenation comes into play here. It involves combining multiple CSS or JavaScript files into a single file. As a result, pages load faster, reducing the time spent requesting individual files. Gulp, Grunt, and Webpack are some of the tools that can assist you in speeding up the concatenation process. They enable seamless merging of many files during development, ensuring deployment readiness.
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Build a Vite 5 backend integration with Flask
Once you build a simple Vite backend integration, try not to complicate Vite's configuration unless you absolutely must. Vite has become one of the most popular bundlers in the frontend space, but it wasn't the first and it certainly won't be the last. In my 7 years of building for the web, I've used Grunt, Gulp, Webpack, esbuild, and Parcel. Snowpack and Rome came-and-went before I ever had a chance to try them. Bun is vying for the spot of The New Hotness in bundling, Rome has been forked into Biome, and Vercel is building a Rust-based Webpack alternative.
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Top 20 Frontend Interview Questions With Answers
Webpack is a module bundler, the main purpose of which is to bundle JavaScript files to make them usable in a browser.
What are some alternatives?
esbuild - An extremely fast bundler for the web
craco - Create React App Configuration Override, an easy and comprehensible configuration layer for Create React App.
Rollup - Next-generation ES module bundler
rust-async-bench - The cost of Rust async/await
vite - Next generation frontend tooling. It's fast!
regexp-match-indices - Polyfill for the RegExp Match Indices proposal
zx - A tool for writing better scripts
gulp - A toolkit to automate & enhance your workflow
nodejs-module-config-examples - A collection of Node.js module configurations for interoperability between CJS and ESM
parcel - The zero configuration build tool for the web. 📦🚀