Neutrino Airbnb Base Preset
@neutrinojs/airbnb-base
is a Neutrino preset that supports linting JavaScript
projects with Airbnb's base ESLint config, following the
Airbnb styleguide.
Features
- Zero upfront configuration necessary to start linting your project
- Modern Babel knowledge supporting ES modules, JSX (when used with React preset), Web and Node.js apps
- Highly visible during development, fails compilation when building for production
- Easily extensible to customize your project as needed
Note: If you are building a React project, you should probably use
@neutrinojs/airbnb
instead.
Requirements
- Node.js 10+
- Yarn v1.2.1+, or npm v5.4+
- Neutrino 9 and one of the Neutrino build presets
- webpack 4
- ESLint 6 or 7
Quickstart
The fastest way to get started is by using the create-project
scaffolding
tool. See the
Create new project
docs for more details.
Don’t want to use the CLI helper? No worries, we have you covered with the manual installation.
Manual Installation
First follow the manual installation instructions for your chosen build preset.
@neutrinojs/airbnb-base
can be installed via the Yarn or npm clients. Inside
your project, make sure @neutrinojs/airbnb-base
and eslint
are development
dependencies. You will also be using another Neutrino preset for building your
application source code.
Yarn
❯ yarn add --dev @neutrinojs/airbnb-base eslint
npm
❯ npm install --save-dev @neutrinojs/airbnb-base eslint
After that, edit your project's .neutrinorc.js
to add the preset for linting
before your build preset. For example, when building your project using
@neutrinojs/web
:
const airbnbBase = require('@neutrinojs/airbnb-base');
const web = require('@neutrinojs/web');
module.exports = {
options: {
root: __dirname,
},
use: [airbnbBase(), web()],
};
Start the app, then check your console for any linting errors. If everything is successful, you should see no errors in the console. ESLint errors visible during development are reported, but will still continue to build and serve your project. ESLint errors during build will not build the project, and will cause the command to fail.
Yarn
❯ yarn start
ERROR in ./src/index.js
Module Error (from ./node_modules/eslint-loader/index.js):
error: Missing semicolon (semi) at src/index.js:35:51:
33 |
34 |
> 35 | const MOUNT_NODE = document.getElementById("root")
| ^
36 |
37 |
38 |
1 error found.
1 error potentially fixable with the `--fix` option.
npm
❯ npm start
ERROR in ./src/index.js
Module Error (from ./node_modules/eslint-loader/index.js):
error: Missing semicolon (semi) at src/index.js:35:51:
33 |
34 |
> 35 | const MOUNT_NODE = document.getElementById("root")
| ^
36 |
37 |
38 |
1 error found.
1 error potentially fixable with the `--fix` option.
Project Layout
@neutrinojs/airbnb-base
follows the standard
project layout specified by Neutrino.
This means that by default all project source code should live in a directory
named src
in the root of the project.
Building
@neutrinojs/airbnb-base
will cause errors to fail your build when
NODE_ENV
is not 'development'
. If you want to ease introduction of this
linting preset to your project, consider only adding it to your use
list
during development until all linting errors have been resolved.
❯ yarn build
ERROR in ./src/index.js
Module Error (from ./node_modules/eslint-loader/index.js):
error: Missing semicolon (semi) at src/index.js:35:51:
33 |
34 |
> 35 | const MOUNT_NODE = document.getElementById("root")
| ^
36 |
37 |
38 |
1 error found.
1 error potentially fixable with the `--fix` option.
Example: ease linting into project by only enabling when NODE_ENV=development
(ie: --mode development
):
const airbnbBase = require('@neutrinojs/airbnb-base');
const web = require('@neutrinojs/web');
module.exports = {
options: {
root: __dirname,
},
use: [process.env.NODE_ENV === 'development' ? airbnbBase() : false, web()],
};
Middleware options
This preset uses the same middleware options as @neutrinojs/eslint. If you wish to customize what is included, excluded, or any ESLint options, you can provide an options object with the middleware and this will be merged with our internal defaults for this preset.
Example: Extend from a custom configuration (it will be applied after Airbnb) and turn off semicolons from being required.
const airbnbBase = require('@neutrinojs/airbnb-base');
module.exports = {
options: {
root: __dirname,
},
use: [
airbnbBase({
eslint: {
// For supported options, see:
// https://github.com/webpack-contrib/eslint-loader#options
// https://eslint.org/docs/developer-guide/nodejs-api#cliengine
// The options under `baseConfig` correspond to those
// that can be used in an `.eslintrc.*` file.
baseConfig: {
extends: ['my-custom-config'],
rules: {
'babel/semi': 'off',
},
},
},
}),
],
};
.eslintrc.js
Exposing generated lint configuration via @neutrinojs/eslint
, from which this preset inherits, provides an .eslintrc()
output handler for generating the ESLint configuration in a format suitable for
use in an .eslintrc.js
file. This allows the ESLint CLI to be used outside of
building the project, and for IDEs and text editors to provide linting
hints/fixes.
Create a .eslintrc.js
file in the root of the project, containing:
// .eslintrc.js
const neutrino = require('neutrino');
module.exports = neutrino().eslintrc();
This .eslintrc.js
configuration will be automatically used when running the
ESLint CLI. For convenience a lint
script alias can be added to your
package.json
, allowing linting to be run via yarn lint
or npm run lint
:
{
"scripts": {
"lint": "eslint --cache --format codeframe --ext mjs,jsx,js src"
}
}
Projects may face a problem when their editor or IDE lints all files and
highlights errors that were normally excluded from source, i.e. Neutrino's
include
and exclude
options. This is because the ESLint CLI does not have a
way to specify included and excluded files from the .eslintrc.js
configuration. Instead you will need to create an
.eslintignore
file that controls which files should be excluded from linting.
.eslintrc.*
Using your own If instead you would prefer to use your own non-generated .eslintrc.*
file,
set useEslintrc
to true
. This will cause @neutrinojs/airbnb-base
to only
set the loader-specific configuration defaults, and leave all other linting
configuration to be managed by the standalone .eslintrc.*
file.
See the @neutrinojs/eslint
documentation
for more details.
Customizing
To override the lint configuration, start with the documentation on
customization.
@neutrinojs/airbnb-base
creates some conventions to make overriding the
configuration easier once you are ready to make changes.
Rules
The following is a list of rules and their identifiers which can be overridden:
Name | Description | NODE_ENV |
---|---|---|
lint |
By default, lints JS and JSX files from the src and test directories using ESLint. Contains a single loader named eslint . This is inherited from @neutrinojs/eslint . |
all |
Contributing
This preset is part of the neutrino repository, a monorepo containing all resources for developing Neutrino and its core presets and middleware. Follow the contributing guide for details.