prettier
Opinionated multi-language code formatter
TLDR
Format a file
$ prettier --write [file.js]
Format multiple files$ prettier --write "[**/*.js]"
Check formatting$ prettier --check [file.js]
Format with specific parser$ prettier --parser [typescript] [file]
Show diff$ prettier --write --list-different [file.js]
SYNOPSIS
prettier [options] [files]
DESCRIPTION
prettier is an opinionated code formatter that enforces a consistent style by parsing code and reprinting it with its own rules. It supports JavaScript, TypeScript, CSS, HTML, JSON, Markdown, YAML, GraphQL, and many other languages through plugins.
The tool deliberately limits configuration options to minimize style debates in teams. Files can be formatted in place with --write or checked for conformance with --check, making it suitable for both local development and CI pipelines.
PARAMETERS
FILES
Files to format.--write
Edit files in place.--check
Check if formatted.--parser NAME
Force parser.--config FILE
Config file path.--single-quote
Use single quotes.--tab-width N
Tab width.
CONFIGURATION
.prettierrc (or .prettierrc.json, .prettierrc.yaml, prettier.config.js)
Project configuration file defining formatting options like tab width, semicolons, quote style, trailing commas, and print width. Searched upward from the formatted file..prettierignore
Glob patterns for files and directories that Prettier should skip, similar to .gitignore format.
CAVEATS
Node.js required. Opinionated defaults.
HISTORY
Prettier was created for consistent code formatting across projects.