ESLint Adds Support for Parallel Linting, Closing 10-Year-Ol...
Blog post from Socket
ESLint has introduced parallel linting through a new `--concurrency` flag, marking a significant performance enhancement and addressing a 10-year-old feature request. This update allows linting tasks to be distributed across multiple CPU cores, with options for automatic optimization or manual configuration of threads, leading to substantial reductions in linting times, particularly for large projects. The feature's development originated from issue #3565, one of ESLint's most requested upgrades, which was formalized in RFC 129 and implemented by contributor Francesco Trotta. Benchmarks indicate improvements of up to 60% in some projects, with certain setups experiencing nearly fourfold increases in speed. The release coincides with other new linters like Oxlint and Rslint, which focus on type-aware and TypeScript-first linting, reflecting a trend towards more specialized, stack-aligned linting tools. This evolution signifies ESLint’s commitment to adapting and scaling for extensive codebases while maintaining its relevance amidst a growing array of purpose-built alternatives.
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