ESLint 10.10.0

ESLint 10.10.0, a new minor release of the widely used JavaScript linter, shipped on September 4, 2026. It follows 10.9.1 and continues the incremental work on the flat config ecosystem and the modern linter core that defines the 10.x line.

What Changed

Minor releases from the ESLint team bundle rule updates and internal improvements on top of the previous patch. Version 10.10.0 keeps flat config as the default configuration path and targets Node.js 20.19 or newer on the runtime side, matching the engines contract of the 10.x series.

• New and adjusted lint rules across the core set
• Flat config refinements and compatibility fixes
• Internal performance and stability improvements

Why It Matters

ESLint remains the default linter for a wide slice of the JavaScript ecosystem, from small libraries to large monorepos. Each minor release pushes rule coverage and developer tooling forward, so the exact changes are worth reviewing before you upgrade.

What Next

Upgrade with your package manager, run eslint --fix against your project, and check the official release notes for any rule behavior changes that could affect your codebase. Flat config users have the smoothest upgrade path in the 10.x line.