speedscope
eslint-plugin-react
speedscope | eslint-plugin-react | |
---|---|---|
5 | 67 | |
5,222 | 8,821 | |
- | 0.4% | |
7.0 | 8.4 | |
20 days ago | 6 days ago | |
TypeScript | JavaScript | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
speedscope
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Speeding up the JavaScript ecosystem – Polyfills gone rogue
Glad to hear you like it! Those flame graph screenshots are taken from https://www.speedscope.app/ .
- Speedscope (An Interactive Flamegraph Visualizer)
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Speeding up the JavaScript ecosystem - one library at a time
Looks like speedscope. https://www.speedscope.app/
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A Trick For Reading Flamegraphs
Flamegraphs simply visualize this process by placing each of these recorded stacks side by side. The resulting visualization looks like "flames", hence a "flame graph". If you do this visualization where the "parent" of all the stack frames is on the top, rather than the bottom, you get a "waterfall graph", because it looks like a waterfall. It's the same thing though. Speedscope and DevTools visualize using the waterfall format, but I still call them flamegraphs anyway.
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Performance Profiling a Mongoid Issue Using AppProfiler
While doing research on Ruby profiling I found Shopify's blog post on "How to Fix Slow Code in Ruby". Though the entire post was extremely insightful, it lead me to Shopify's app_profiler library, which can be used to automatically profile code and redirect the output to a local instance of speedscope. Having worked previously with Flame Graphs of CPU stack traces collected using perf.
eslint-plugin-react
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Interesting Bugs Caught by ESLint's no-constant-binary-expression
> [1] https://github.com/jsx-eslint/eslint-plugin-react/blob/maste...
From what I remember, being able to pass children as a prop is considered a side-effect of an implementation detail, that breaks the expected abstraction. There really isn't any reason to use it, and I think there's a chance it may even confuse the virtual dom diffing?
Also this would prevent you from accidentally doing both at once:
Is it me?}>
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Speeding up the JavaScript ecosystem – Polyfills gone rogue
I try to focus on the issues rather than individuals, but the root of the problems in the listed eslint plugin libraries points to ljharb.
If you do some simple digging into these libraries, you will find that these types of commits are quite common within them.
https://github.com/jsx-eslint/eslint-plugin-react/commit/e1d...
https://github.com/jsx-eslint/jsx-ast-utils/commit/bad51d062...
https://github.com/jsx-eslint/eslint-plugin-jsx-a11y/commit/...
He would rather see the download count of these polyfill libraries https://github.com/ljharb/ljharb#projects-i-maintain increase, compared to assessing the health of the JavaScript ecosystem.
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The Best ESLint Rules for React Projects
An obvious pick for React projects, but eslint-plugin-react along with their plugin:react/recommended rule set is a must. This will give you some sensible rules such as requiring a key to be specified in JSX arrays. eslint-config-airbnb is another good (if a bit loose) base rule set on top of eslint-plugin-react to start from.
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Avoid "&&" Operator for Conditional Rendering in React
If you already have the eslint-plugin-react installed, you can enable the following rule.
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Create React UI Lib 1.1: Ladle and ESLint
You can also add ESLint now (props to @femincan for the suggestion). It comes with recommended settings for these plugins: typescript, prettier, react, react-hooks, jsx-a11y.
- Confusion over one of the examples of the jsx-no-literals linting rule
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What's weirdest webdev practice in your company?
Also for what it’s worth, there’s a React ESLint code rule that can enforce this behavior either way for Component props - I’m not in front of a code base atm, but I wonder if my preference for the syntax above is influenced by a popular linting preset like AirBnB which enforces this rule? https://github.com/jsx-eslint/eslint-plugin-react/blob/master/docs/rules/jsx-curly-brace-presence.md
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Removing Default React Imports. For a Cleaner Code
The missing piece is on this page, in a small note at the end of the page: the eslint rule to disallow missing React when using JSX.
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Ask HN: What are you predictions for 2023?
Thanks for weighing in, that's good to know. After wondering if this could be auto-refactored, I came across https://github.com/jsx-eslint/eslint-plugin-react/blob/maste..., will definitely have to give that (with `--fix`) a try in the new year and see if I can get the team on board! – desire for typescript being a compelling factor.
Personally I do like the non-destructured `props.abc` throughout component code, really helps clarify at a glance where something is coming from, whether it's locally or externally defined, etc. Code style is an endless exercise in compromises/opinions though, even _with_ tools like eslint and prettier.
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Recommended React Hooks Convention
eslint-plugin-react react/hook-use-state
What are some alternatives?
FlameGraph - Stack trace visualizer
stylelint-config-prettier - Turns off all rules that are unnecessary or might conflict with prettier.
stackprof - a sampling call-stack profiler for ruby 2.2+
berry - 📦🐈 Active development trunk for Yarn ⚒
Microsoft-Performance-Tools-Linux-Android - Linux, Android and Chromium Performance Tools built using the Microsoft Performance Toolkit. Cross-platform .NET Core + WPA GUI
prop-types - Runtime type checking for React props and similar objects
app_profiler - Collect performance profiles for your Rails application.
javascript - JavaScript Style Guide
nolyfill - Speed up your package installation process, reduce your disk usage, and extend the lifespan of your precious SSD.
razzle - ✨ Create server-rendered universal JavaScript applications with no configuration
eslint-plugin-import - ESLint plugin with rules that help validate proper imports.
eslint-plugin-prettier - ESLint plugin for Prettier formatting