eslint-plugin-prettier
Runs prettier as an eslint rule
Installation
You'll first need to install ESLint:
$ npm install eslint --save-dev
Next, install eslint-plugin-prettier
:
$ npm install eslint-plugin-prettier --save-dev
Finally, install prettier
:
$ npm install prettier --save-dev
Note: If you installed ESLint globally (using the -g
flag) then you must also install eslint-plugin-prettier
globally.
Usage
Add prettier
to the plugins section of your .eslintrc
configuration file. You can omit the eslint-plugin-
prefix:
{
"plugins": [
"prettier"
]
}
Then configure the prettier
rule under the rules
section:
{
"rules": {
"prettier/prettier": "error"
}
}
You can also pass prettier
configuration as an option:
{
"rules": {
"prettier/prettier": ["error", {"trailingComma": true, "singleQuote": true}]
}
}
The rule will report an error if your code does not match prettier
style. The rule is autofixable -- if you run eslint
with the --fix
flag, your code will be formatted according to prettier
style.
This plugin works best if you disable all other ESLint rules relating to code formatting, and only enable rules that detect patterns in the AST. (If another active ESLint rule disagrees with prettier
about how code should be formatted, it will be impossible to avoid lint errors.) You can use eslint-config-prettier to disable all formatting-related ESLint rules. If your desired formatting does not match the prettier
output (e.g. if you don't want semicolons), you should use a different tool such as prettier-eslint instead.
Migrating to 2.0.0
Starting in 2.0.0, prettier
is a peerDependency of this module, rather than a dependency. This means that you can use any version of prettier
with this plugin, but it also means that you need to install it separately and include it as a devDependency in your project.
To install prettier
, use:
npm install prettier --save-dev