Best VS Code Extensions for JavaScript Developers in 2026

VS Code is the editor of choice for over 70% of JavaScript developers — and the extension ecosystem is one of the main reasons why. The right set of extensions can eliminate entire categories of bugs, automate formatting decisions, and turn your editor into a purpose-built JavaScript development environment. Here are the 20 extensions that will genuinely improve your JavaScript development workflow in 2026. Essential: Code Quality and Linting 1. ESLint Extension ID: dbaeumer.vscode-eslint ESLint is non-negotiable for professional JavaScript development. It catches common bugs, enforces code style, and integrates with your project's .eslintrc configuration. The VS Code extension provides inline error highlighting — you see ESLint errors as red underlines in real time, before you save or run your code. // ESLint catches this immediately const user = getUser () console . log ( user . name ) // potential null dereference — ESLint warns you // Properly guarded const user = getUser () if ( u