How to migrate from ESLint to Oxlint

Eslint it has been the standard for over a decade. It is mature, field-tested, and intensely customizable with a vast ecosystem of plugins and policies.

It has become an important software in large JavaScript and TypeScript tasks. Catches errors and keeps code consistent.

On the other hand, as tasks increase, ESLint can become slow and resource-intensive. What should be a practical guide, a rough feedback loop often turns into a bottleneck, slowing down developers and eating into CI/CD costs.

Enter Oxlint.

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What is Oxlint?

Oxlint is a high-performance linter for JavaScript and TypeScript built completely in Rust.

Its goal is to create a simple toolchain that is fast, lightweight, and easy to use. With 0 configurations required, Oxlint can spot no longer bizarre errors and redundant code right out of the ballpark.

Below are the key key choices that make Oxlint a fascinating strain for ESLint:

Serve as	Eslint	Oxlint
Basic technology	Node.js	Rust
Execution order	Necessarily single-threaded	Parallelized multi-core scaling
Configuration	Requires special configuration for capacity	0 configuration required

Now, how do you actually switch from ESLint to Oxlint?

Fortunately, the process is very simple.

We’ll take all the steps to set it up, convert ESLint into your workflow, and make sure your team of workers gets the boost in capacity without losing the guardrails you rely on.

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Migration Providing Business

The steps assume that you have already prepared ESLint in your project and have a flat ESLint configuration report.

To get started, you will run:

npx @oxlint/migrate eslint.config.mjs

After running the migration command, you will see a brand new record known as .oxlintrc.json in your business checklist. This record contains the configuration migrated from the ESLint flat configuration record.

You will now run the file oxlint CLI in your business.

npx oxlint@latest

This will sometimes commit your business to using the principles defined throughout the .oxlintrc.json documentation. In this case, it appears that there is something that will need to be entered into one of the company’s crucial data.

On the other hand, if you need to organize it as a developer dependency, you will run:

npm arrange --save-dev oxlint

Then, you will add a script to your file bundle deal.json:

{
    ...
    "scripts": {
        "lint": "oxlint"
        ...
    }
}

Now you will simply run the linter with:

npm run lint

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Address unsupported regulations

Oxlint is helping a relatively large number of regulations that include the same fundamental laws as ESLint, Typescript, and eslint-plugin-react.

On the other hand, there may be some regulations that are not implemented however, as confirmed below:

Even if you come across unsupported regulations during the migration process, like the ones confirmed above, and you still want to keep those regulations in your company, you will use eslint-plugin-oxlint alternatively.

This allows you to continue using the ESLint policies provided, while taking advantage of the capacity benefits of Oxlint.

To insert it into the plugin, you will run:

npm arrange --save-dev eslint-plugin-oxlint

After installing it, you will add the principles from the previously generated record onto your ESLint configuration record:

import oxlint from 'eslint-plugin-oxlint';

export default [
  ..., // Load other ESLint plugins.
  ...oxlint.buildFromOxlintConfigFile('./.oxlintrc.json'), // Load rules from Oxlint config file.
];

Then, replace the lint script in your bundle deal.json to include every single ride oxlint AND eslint:

{
  "scripts": {
    "lint": "npx oxlint && npx eslint"
  }
}

This way, you’ll still use ESLint for unsupported policies while taking advantage of Oxlint’s pace for the rest of your code linting needs.

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In conclusion

Switching from ESLint to Oxlint is not about changing equipment. It’s about optimizing your workflow and reducing the pain of slowness rolled.

ESLint is still going strong with its rich ecosystem, but Oxlint takes a contemporary approach by specializing in capability and simplicity right out of the ballpark.

Built in Rust and designed with a zero-configuration setup, Oxlint offers lightning-fast fraying that scales to even large tasks.

I would recommend taking a look at it in a couple of your small to medium sized tasks. It is essential to be shocked at how much faster and smoother your building process seems.

The post How to Migrate from ESLint to Oxlint appeared first on Hongkiat.

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