prettier / plugin-swift

🚧 Work in Progress! 🚧

Swift Plugin for the Opinionated Code Formatter

What does it do?

⚠️ Warning ⚠️ This plugin might eat your homework in its early stage. It also depends on Swift's lib/Syntax which is in flux. Please stage or commit your code before performing any in-place formatting.

You can check out how it formatted Artsy's Eidolon.

Prerequisites

You need one of the following:

1. A snapshot from March 30, 2018 or later,
2. a recent manual build from Swift's master, or
3. Swift 4.2 (once it's available as a beta or released completely).

Assuming you picked (1) please follow the installation instructions, which recommend updating your PATH at the end:

TOOLCHAIN=swift-DEVELOPMENT-SNAPSHOT-2018-03-30-a.xctoolchain
export PATH=/Library/Developer/Toolchains/${TOOLCHAIN}/usr/bin/:"${PATH}"

Alternatively you can pass the full path to the swiftc binary via the environment variable PRETTIER_SWIFT_SWIFTC:

TOOLCHAIN=swift-DEVELOPMENT-SNAPSHOT-2018-03-30-a.xctoolchain
export PRETTIER_SWIFT_SWIFTC=/Library/Developer/Toolchains/${TOOLCHAIN}/usr/bin/swiftc

Contributing

If you're interested in contributing to the development of Prettier for Swift, you can follow the CONTRIBUTING guide from Prettier, as it all applies to this repository too.

To test it out on a Swift file:

• Clone this repository.
• Run yarn.
• Create a file called test.swift.
• Run yarn prettier test.swift to check the output.

Install

yarn add --dev --exact prettier prettier/plugin-swift

Use

prettier --write "**/*.swift"

Maintainers

Marcel Jackwerth