Eslint running slow. Put this line into VS Code user settings.

Eslint running slow fixAll": true, } I ran the Bisect and Help to run eslint in create react app. This option runs Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Hi, I'm using this setup and I have no problems saving. 1. Thanks to Matthieu Reigler I found out that import/no-cycle is way too longer than other rules. I know about TIMING=1 which tells you which rules are slow, but I'm looking to debug which files are slow in case I some big files which I might want to ignore. Execution has no significant difference // fastWrap. module. I've noticed that my project setup seems to be part of the problem, but since changing my If another rule that already has called resolve() runs before this rule, then that rule would become slow, and this rule would become faster. ts from the eslint documentation which is supposed to allow eslint to work on custom file I am afraid that for many projects which update from ESLint 5, eslint-plugin-import will be too slow and we will have to remove it. 1 as a build tool. fixAll": true, } I ran the Bisect and fou The cause of the slow ESLint runtime with eslint-plugin-prettier is because that plugin also runs Prettier under the hood to detect and raise issues when the code differs from In this blog post, we'll explore how you can optimize ESLint performance by leveraging the TIMING=1 environment variable and utilizing ESLint caching. Running ESLint --fix would fix the formatting errors, but saving would not. No ESLint configuration found for Visual Studio Code. Eslint is much slower at parser typescript than tslint was because eslint uses an AST model that is incompatible with The plugin loads and runs Prettier inside ESLint. On top of eslint added prettier. For a spec. In this, I added: --ext . 1 the ESLint extension makes the IntelliSense and linting to be very slow. However I do see the problem that right after a I cannot get fast eslint --fix, running it via CLI (this is how formatter. We know typescript-eslint is slower than eslint in many cases -- and also that most (but not all) of those cases of slowness are due to misconfigurations and/or type checking Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Locally I run everything inside a node:18 docker container, and the whole project folder is mounted into the container as a volume. But it's a great plugin, and I'd like to debug and We have a big monorepo with over 100 packages. After uninstalling the extension everything becomes Speed Up ESLint. I sympathize with you - in my projects, I use Babel for quicker I ran into a similar problem-- ESLint was not properly formatting only certain, seemingly random, files on save. I created react app with tutorial Then I installed babel-eslint standard snazzy and then I added to script in package. ("includes" added to tsconfig. Automate any There's a discussion here about being able to disable eslint runs on compile altogether, which makes sense if you have a custom . archived due to age This issue has been archived; please Running a CPU-consuming process every time a file changes would be too slow while also possibly slowing down more important processes, such as webpack. (The number depends on how much memory do you need. Learn how to avoid common mistakes and optimize your setup for smooth running in this It's because Javascript runs out of memory. . Put this line into VS Code user settings. The import When opening project and running npm run serve, eslint shows errors. Their repository uses a task runner abstraction to coordinate common build tasks, but with a little bit of digging we can piece together the It seems that eslint-plugin-import causes lint-staged execution to slow down. Now, the code linting increased from 30 seconds to 4 minutes: time This example uses the configuration file at ~/my. 0 and 1. ts // turns out using Run npm install eslint-plugin-html --save-dev in your Terminal. I have a custom module resolver with cache, and running @typescript-eslint Delay running ESLint Couture Andrew Created February 15, 2018 11:53. I was reviewing our project's ESLint config and I noticed that our lint process was running quite slow. autoFixOnSave magic (I suspect they don't do just eslint I've been timing and profiling ESLint runs at Airbnb and noticed that react/no-unknown-property is particularly slow for us when using the "detect" setting for React version. The second one is the The project has been upgraded from 11. Here's how to speed it up: Enable caching: Add --cache to your ESLint command: Catch issues before Problem: Slow Lint Run Process While setting up our team's ESLint config with TypeScript, I noticed that running ESLint with typescript-eslint Read more > Bug: eslint is running slow ESLint version v8. More than 10x improvement Contribute to riltsken/nx-eslint-slow-test development by creating an account on GitHub. Eslint run times seem to be taking > 1 minute when eslint should be running in < 10 seconds. The TypeScript Wiki's Performance page includes general eslint is taking almost 2 minutes to lint half a dozen files, none of which are big. But it will not always work since different project uses a different version of eslint. --inspect-config. js. Closed nishantwrp opened this issue Aug 31, 2020 · 2 comments Closed the eslint checks take around 40min to run completely. Basically, be Created a new React project. Anyone knows what's the deal with this IDE? I have been running it for a while, lately it has become very slow and unresponsive at times. Mercurial repositories, even when not including dot files #8259. This results in You can see that the type of condition is actually the literal type false by hovering over it in your IDE. json or different format than . Sign in Product Actions. Open . In my project, with It's faster after disabling eslint, but still slow, spending a lot of time in a handler for that event but in the python extension Cells executed 952 Output type text Time spent in VS Hi! I'm a vim user and experience blocking lag with eslint, and still do with eslint_d. I'm running OSX. If you have . So in short, if you only use this rule Also, this kind of requests may slow your ESLint executions significantly, if anyone runs it in real-time in their editor, calls will be made very often and will slow down the entire I was able to fix this issue by updating using the command nuxi upgrade --force 🎉. If you skip out the glob then each will run only on the file matched by lint-staged. It is possible to use the --cache option of eslint (docs) to speed things up substantially. This is entirely expected due to having to wait for typescript to parse your As you can see, the no-unsafe-assignment rule is about 400 times slower than the next slowest rule, and a lot slower than the equivalent rule in tslint (no-unsafe-var). 57. When using eslint to "lint-as-you-type" in various editors, installing eslint_d Running typed linting on a project is generally as slow as type checking that same project. It seems that eslint-webpack-plugin blocks the compilation to do jobs while eslint-loader doesn't. Currently it takes over 3 seconds for this test to complete. Closed hongbo-miao opened this issue Apr 12, 2021 · 5 comments Closed @iiroj isn't 5 seconds a bit too much to run eslint on a Actually, when the ESLint validation is slow it should show this in the language status indicator so that developers are aware of this. I use yarn for the project. I would really like to understand, why this The company I work for requires that I run some horrible (but somehow popular) antivirus software on my PC which makes my eslint . ESLint can slow down for big React projects. After installing a few libraries the initial load of the app (after running npm run dev) takes My lint-staged seems a little bit slow #963. 74. 10 during the nx upgrade process (nx migrate). exports = {env: My colleague is not using Lsp, but i think the problem is eslint-lsp running the same time with tsserver, i just remove it, maybe it is the problem Edit: Im realize that whenever i hit undo, eslint process spawn and it There are two issues with this approach. js and add there plugins: ["html"] right after module. Run eslint on the For performance, it is inevitable that typed linting will slow your linting down to roughly the speed of type checking your project. ESLint caching is I've noticed the Eslint import/no-cycle rule takes forever (minutes) in a fairly large project and while there was some discussion in a few eslint-plugin-import Github issues, I was I'm investigating why ESLint ("eslint": "8. Before I added Bug: eslint is running absurdly slow for a few small files #15728. 72 'eslint' is not recognized as an internal or external command. Skip to content. My lint script is It's a known issue because of eslint runs each file isolated, so we're currently paying the initialisation cost of the type checker in every single file (which is slow and means a While an analysis of the overall rule performance for an ESLint run can be carried out by setting the TIMING environment variable, it can sometimes be useful to acquire more granular timing Note in relation to the above comment - whilst my issue initially appeared to be an IDE issue, it emerged it was actually not - the underlying problem was ng lint running slow / Slow eslint rules #2450. 25. When I run JSHint on itself, it takes less than 0. Incremental compilation is hit even harder. eslintrc. Navigation Menu Toggle navigation. It states that "setting the TIMING environment variable will trigger the display, upon linting Type: Performance Issue when I add eslint code action on saving, saving files becomes really slow "editor. I found a few problems here. It became Linting a project with our parser when using type information will be slower than a lint run without type information. reactjs eslint Problem: Slow Lint Run Process While setting up our team's ESLint config with TypeScript, I noticed that running ESLint with typescript-eslint Read more > Speeding Up ESLint - On webstorm eslint setting, there is an "extra eslint options" field. But when I add a Configuring ESLint for TypeScript can be tricky, leading to slow performance. Running Prettier inside ESLint can be slow: see Performance Troubleshooting > eslint-plugin-prettier. js file of approximately 400 lines, it takes about 8 Type: Performance Issue when I add eslint code action on saving, saving files becomes really slow "editor. Flat Config Mode Only. Note: slow and fast refer only to Eslint speed. json) by debugging I found out, that function Profile and Remove Slow Running ESLint Rules. Using eslint to lint eslint. The following is my eslint configuration. Typed lint rules call to the same TypeScript This repo contains two Vue object wrappers a slow one and a fast one. Gobbles up CPU even when just editing a In ESLint official website, there is a paragraph, called Per-rule Performance. Contribute to nelisbijl/slow-eslint development by creating an account on GitHub. It seems to happen for Prettier, Eslint, React, etc. I also tried build our project first then do eslint, but still didn't The problem is with the use of @typescript-eslint/parser under the hood. However, narrow On the latest VSCode 1. What version of Runs 3x slower because the resolution is invalidated over and over again. Look at the information provided by eslint vs code plugin The reason I am doing just a single file is because I just turned on airbnb with eslint on create-react-app and I have a lot of errors to fix I wanted to do it slowly. There is almost nothing there -- just SSR, code splitting and a couple of 'hello world!' pages. 5 seconds, meaning that we are six If I run with esw -w, it picks up file changes and returns within a few seconds. ESLint is a wonderful piece of software that catches many software bugs and code quality issues before you check them into the shared codebase in a repository. It runs ESLint over jshint. When I run with ng lint, it takes over 20 minutes to complete. In fact, I've worked with much larger projects before in different languages, in VSCode and out, and IntelliSense wasn't affected to a non Hey maintainers, A few days ago, while I was working on One Double Zero, I noticed that running the version command of the application was very slow - somewhere around half a second to import plugin has to parse every dependency, whereas "normal" ESLint rules only need to inspect a small portion of the current file (that has already been parsed). This article hopes to present different optimizations from multiple perspectives to make your Vite application run a I'm getting frequent &quot;Saving Getting code actions&quot; from VS Code. Additional Info. As it is, I From #814: It would be really nice to show linting results immediately as eslint is running, that is, as soon as a file is verified the messages are sent to the formatter via event as after adding "project" to "parserOptions"and running npm run lint, linter start works very slow. execArgv": ["- I tried swapping out extends: airbnb with extends: eslint:recommended in hope that it's the additional plugins that are causing it, but I still got 12 seconds time. (Such implementations are strictly According to that log the computation for computing all fixes took 2ms (which indicates that the rule is not considered). eslintrc and already have eslint running in your editor and eslint with some typescript rules is incredibly slow with null_ls compared to vscode Hi all, I've been using neovim for about 6 months now and really enjoy it, but my only issue is that I find eslint-plugin-prettier is very slow See original GitHub issue. fixAll": true, } I ran the Bisect and found that the problem comes from eslint extension You're asking eslint (and prettier) to run over the whole codebase by providing a glob. 1") takes a long time to run, even on a single file and when no fixes are needed. config. g. In this case, typescript-eslint cannot possible know better than TypeScript itself, so you Regression: ESLint is slow generating file lists for directories with large dot folders, e. codeActionsOnSave": { "source. So, for debugging purposes I turned it off. Then I quit the server by pressing ctrl + c and running npm run serve again and after that, eslint NEVER shows any Run ESLint from NPM script on Windows. In the debug log (posted below), I can see that it's taking over 45 seconds (each) for two particular files to be linted, and neither one is more ESLint is pretty slow, especially after adding a bunch of plugins. I've had this problem with ESLint on Atom as well, where it tries to lint after every keystroke and slows I can confirm this. Adding Run ESLint and Prettier on the staged files; Consequently, it may be true that the worst-case scenario of this new approach may be slower than running all the tests directly. Lint with tsconfig. The output seems to indicate eslint is Configure ESLint to stop linting the large files? So put the large file in certain folders and add those folders to the ignorePatterns of eslintrc and exclude of tsconfig. Issue Type: Performance Issue After a software/ubuntu update, most of the time, lint is slowly responding, and sometimes get stuck for a couple minutes Extension version: I have a relatively moderately sized TypeScript React project made with CRA. Recently, I started a new project in React v18 which uses Vite v4. exports. kaiyoma opened this issue Mar 25, 2022 · 4 comments Labels. ) "eslint. eslint. 4. I also know Slow eslint for specific Vue construct. 2. 27s on my Solution: SWC (Speedy Web Compiler) ts-jest is most likely slowing down the tests. js, which is used instead of searching for an eslint. Then VS Code freezes, and the file is NOT saved. If TypeScript's type checker runs slowly on your project, then typed linting will as well. json next line "lint": "standar I used to build React apps starting with create-react-app, then I would install eslint with plugins and a custom config, run an eslint init, and add some custom scripts to run eslint Make ESLint Fast version 2. Running the command mentioned in the last comment here now took about 18. js file. json in the parserOption takes over 20 mins. However, because it doesn't re Unfortunately ESLint only reports errors from its own linters, it does not report typescript compilation failures. take nearly 30 seconds to run on a very Using something like NodeClusters - or most other per-process implementations - would avoid the issue of needing to [vastly] rewrite ESLint. 14. One is hardcoding eslint path. 11 to 12. Here was my process A few weeks back, running yarn tsc --noEmit started to take way too long that isn't even possible to run it without it crashing due to an out-of-memory error: &lt;--- Last few GCs -- Well. nvim works) is much slower than CoC Eslint & VSCode eslint. Background While Vite runs fast by default, performance issues can creep in as your project's needs grow. I don't think you're at the right address for this kind of problem. 0 What problem do you want to solve? Currently, running ESLint with --quiet will run all of the rules set to "warn" but disregard the results. Today, I happened to notice that on my project of 8 files, it’s equally slow with the whole project as it is with a single Type: Performance Issue when I add eslint code action on saving, saving files becomes really slow "editor. SWC is drop-in alternative, written in Rust and super fast.