dprint vs Scalafmt

dprint is a command-line application that automatically formats code through a configurable, pluggable system built with Rust and WebAssembly. Its official and wrapper plugins cover languages and formats including TypeScript, JavaScript, JSON, Markdown, TOML, CSS, Dockerfile, C#, Python, Go, Swift, GraphQL, YAML, PHP, LaTeX, R, and Julia. Project configuration files define plugins, formatting settings, included files, and exclusions. Plugins can be loaded from a URL or file path and pinned or versioned in configuration. The project says dprint formats hundreds of files in milliseconds and enables incremental caching by default. WebAssembly plugins run in a sandbox without network or file-system access, while process plugins are executable files and are not sandboxed. Editor integrations are listed for Visual Studio Code, IntelliJ, and Neovim; the language-server command can also be used by other editors. The CLI is distributed as a static binary with no runtime dependencies, with installation options including shell, PowerShell, Cargo, npm, and Homebrew. It is MIT-licensed and free.

Scalafmt is a free Scala code formatter for keeping formatting consistent across a team. It handles Scala 2, Scala 3, sbt files and Scala scripts, with one dialect selected for each file. Formatting options are stored in a plain-text .scalafmt.conf file using HOCON syntax. Since version 3.1.0, the configuration must explicitly specify both the version and runner.dialect. Scalafmt can run from an editor, build tool or terminal. Documented editor integrations include IntelliJ, VS Code, Vim, NeoVim, Emacs, Sublime Text and Eclipse; Metals supports formatting requests from editors. It integrates with sbt and documents integrations for Maven, Gradle and Mill. Command-line check and test modes report misformatted code without writing changes. It also supports ignoring files, changed-lines formatting and a library API. IntelliJ range formatting uses IntelliJ’s own formatter by default: Scalafmt is designed primarily for whole files, and selected ranges may produce undesirable results. The project license is Apache-2.0.