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tsgolint is an experimental proof-of-concepttypescript-go powered JS/TS linter written in Go.

• Primitive linter engine
• Lint rules tester
• Source code fixer
• 40type-aware typescript-eslint's rules
• Basictsgolint CLI

tsgolint is20-40 times faster than ESLint + typescript-eslint.

Most of the speedup is due to the following facts:

• Native speed parsing and type-checking (thanks totypescript-go)
• No moreTS AST -> ESTree AST conversions. TS AST is directly used in rules.
• Parallel parsing, type checking and linting.tsgolint uses all available CPU cores.

Seebenchmarks for more info.

• Non-type-aware rules
• Editor extension
• Rich CLI features
• Config file
• Plugin system

JS-based plugins are not currently supported.

• Experimental support is available on theexperimental-eslint-compat branch using thegoja JavaScript engine.
• While functional, performance was significantly worse than ESLint running in Node.js, so this approach is currently on hold.
• If a faster, lower-allocation JS interpreter in Go becomes available in the future, we may revisit this idea.

tsgolint is an experiment.It is not under active development.

Goals: to explore architectures and performance characteristics.We want to investigate how much faster linting could be if we moved the linter to Go alongside typescript-go.

Non-Goals: we have no plans to take significant development budget away from typescript-eslint to work on tsgolint.Our plan is to continue to work on typescript-eslint to supported typed linting with ESLint.Experiments such as tsgolint should not be taken as indications of any project direction.

If you want faster typed linting with ESLint, seetypescript-eslint/typescript-eslint#10940 Enhancement: Use TypeScript's Go port (tsgo / typescript-go) for type information.

git submodule update --init# init typescript-go submodulecd typescript-gogit am --3way --no-gpg-sign ../patches/*.patch# apply typescript-go patchescd ..go build -o tsgolint ./cmd/tsgolint