Language Tool Benchmark

Benchmarks for various language engineering tools, comparing the same statemachine DSL implemented in Langium (TypeScript), Fastbelt (Go), Xtext (Java), and AnyText (C#).

Requirements

• Node.js 22+ and npm
• Go, version per fastbelt/statemachine/go.mod
• .NET SDK 9+ and the anytextgen CLI (installed via dotnet tool install --global NMF-AnyTextGen)
• JDK 21+ and Maven
• dotnet-trace (dotnet tool install --global dotnet-trace), for bench:anytext:alloc only

Run npm install once before anything else.

Workspace build benchmarks

The package.json supplies an additional argument for the workspace size (in MB) for these scripts:

npm run bench:langium
npm run bench:anytext
npm run bench:xtext
npm run bench:fastbelt

Incremental update benchmarks

The package.json supplies an additional argument for the file size (in KB) for these scripts:

npm run bench:langium:incremental
npm run bench:anytext:incremental
npm run bench:xtext:incremental
npm run bench:fastbelt:incremental

Allocation profiles

The package.json supplies an additional argument for the workspace size (in MB) for these scripts:

npm run bench:xtext:alloc
npm run bench:langium:alloc
npm run bench:fastbelt:alloc
npm run bench:anytext:alloc