FastFormat 1.1.0

FastFormat

A fast C# formatter that respects .editorconfig rules. Designed to be significantly faster than dotnet format for pure formatting tasks.

Performance

In benchmarks formatting 50 C# files:

• FastFormat: ~0.7s
• dotnet format: ~4.0s

That's roughly 6x faster.

Installation

dotnet tool install --global FastFormat

Usage

# Format files or directories
dotnet-fastformat src/
dotnet-fastformat Program.cs

# Check formatting without making changes
dotnet-fastformat --check src/

# Stdin -> stdout
cat Program.cs | dotnet-fastformat
cat Program.cs | dotnet-fastformat --stdin-filepath src/Program.cs

# Verbose output
dotnet-fastformat -v src/

# Control parallelism
dotnet-fastformat -p 8 src/

Supported .editorconfig Options

• indent_style
• indent_size
• tab_width
• end_of_line
• insert_final_newline
• csharp_new_line_before_open_brace

Why is it faster?

• No MSBuild workspace loading
• No semantic analysis
• Parallel file processing
• Direct .editorconfig parsing without heavy workspace machinery